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Trang 1Unit 1
Activity 1, page 5
1 Possible answer: The purpose of this essay is to argue that
electronic voting systems are less reliable than paper ballots
2 5 paragraphs; 3 body paragraphs
3 a 2 citations
b References
c They are the same
4 Possible answer: Computer hackers can change the
outcome of an election
Activity 2, page 8
Possible answers:
1 Yes, because the author asks a question and draws the
reader into the essay Also, the reader wants to know why
we should not rely on technology for voting
2 Yes, because the reader wants to learn about the four
strategies of camouflage and how they differ
3 Answers will vary
4 Answers will vary
Activity 3, page 9
1 a Hook: Can computer technology be used to steal an
election?
b Question
2 a Hook: The animals that can live the longest are the ones
that hide the best
b Statement that surprises
3 a Hook: Many students dread them, but tests are a key part
of the educational experience
b Dilemma/conflict
Activity 4, pages 10–11
Possible answers:
1 Hook: Some airline passengers pay twice as much as the
person they are sitting next to
Type of hook: Surprising statement
2 Hook: Passwords need to be easy to remember yet
complex enough to keep accounts secure
Type of hook: Dilemma/conflict
3 Hook: What makes the best jury?
Type of hook: question
4 Hook: These days kale is on nearly every menu What has
made it so popular?
Type of hook: Surprising statement / question
Activity 5, page 12
1 a Thesis statement (controlling idea is underlined): The
four primary strategies of camouflage include concealing
coloration, disruptive coloration, disguise, and mimicry
b Expected organization: The writer will discuss four strategies of camouflage, one strategy per body paragraph
2 a Thesis statement (controlling idea is underlined): A wide variety of study skills and techniques can aid students
as they work towards their objectives in all of their classes
b Expected organization: The writer will discuss different studying strategies in relation to students’ objectives
3 Answers will vary
Activity 6, page 12
Answers will vary
Activity 7, pages 13–15
_5 With mimicry, an animal’s coloring makes it resemble another, more dangerous creature so that they are virtually identical _3 Animals such as zebras and giraffes show disruptive coloration
_4 With disguise, some animals resemble specific elements
of their surroundings rather than their environment as a whole _2 Concealing coloration helps animals to blend into their surroundings and create a visual illusion
Possible answer: Yes, the topic sentences do an effective job of building on the ideas expressed in the thesis because they each elaborate on the ideas introduced
Activity 8, page 16
Essay 1.1
1 Key words from the introduction paragraph: Computer technology, societies, voting, elections
2 Paragraph 1 ends with “Societies should not rely solely on electronic systems for voting because elections are too important to trust to computers.”
The conclusion returns to this idea with “Since voting is critically important to the effective working of society, governments should not rely only on computers for all elections.”
3 The writer gives an opinion
Essay 1.2
1 Key words from the introduction paragraph: camouflage,
strategies, predators, predation, hiking
2 Paragraph 1 ends with “The four primary strategies of camouflage include concealing coloration, disruptive coloration, disguise, and mimicry.”
The conclusion returns to this idea with “Whether by concealing coloration, disruptive coloration, disguise, or mimicry, animals need the protections of camouflage if they are to escape their natural foes.”
3 The writer gives an (expert’s) opinion “ as Emlen (2014) observes, “Animals that panic, dashing from their hiding places at the wrong time, or animals that walk or fly with the wrong gait, can break camouflage with deadly consequences” (p 18).”
1
GREAT WRITING 5: FROM GREAT ESSAYS TO RESEARCH
ANSWER KEY
Trang 2Activity 9, page 17
Answers will vary
Activity 10, page 19
Possible answers:
1 a weather delay: a delay that is caused by the weather
2 a money shortage: a shortage of money
3 a rice cooker: a machine that cooks rice
4 an air traffic control mistake: a mistake with the control of
air traffic
5 an earthquake warning system malfunction: a malfunction
with the warning system for an earthquake
Activity 11, page 19
government officials
voting machines
voter registration
paper receipts
paper slips
voting procedure
Activity 12, page 20
1 acronym - UFO
2 conceal - hide
3 dispute - disagreement
4 enhance - increase
5 normal - usual
6 pace - speed
7 predator - attacker
8 retain - keep
9 vastly - significantly
10 verify - check
Activity 13, pages 20–21
1 In subsequent months
2 flee from the scene
3 blend into your surroundings
4 take an unnecessary risk
5 a vastly different result
6 dread seeing the dentist
7 endure hardships
8 a coherent strategy
9 a normal body temperature
10 enhance the flavor
Activity 14, page 21
1 deviation
2 deviates
3 endurance
4 endured
5 enhanced
6 enhances
7 evolved
8 evolve
9 vastly
10 vast
Activity 15, page 22
Answers will vary
Activity 16, page 22
1 The candidate’s TV commercial was a crucial part of her
campaign
2 Some animals have developed very clever ways of protecting themselves.
3 In many courses, the final exam is worth as much as 50% of the final grade.
4 The three largest countries in the South America is are
Brazil, Argentina, and Colombia
5 Selling a product successfully in a foreign country may require to make making changes to the product.
Activity 17, page 23
Possible answers:
1 The main cause of the problem is a severe lack of natural resources such as coal and oil
OR
A severe lack of natural resources such as coal and oil is the main cause of the problem
2 The president and vice-president played a part in passing a bill that raises taxes on sodas and other sugary drinks
3 In the experiment last week, the scientists placed coffee plants in special containers to see how much oxygen the plants would produce
OR Last week in the experiment, the scientists placed coffee plants in special containers to see how much oxygen the plants would produce
Activity 18, page 24
Possible answers:
No Babies Allowed?
Should parents be allowed to bring their young baby to an upscale restaurant? Recently there has been some debate about
this issue Restaurant customers sometimes complain that a
crying baby can ruin their special evening out They say that it is
not acceptable that they have paid a lot of money for a special evening and then a crying baby spoils their experience Some parents say that everyone has the right to eat in any restaurant
For them, the price of the meal should not determine who can and cannot eat at that restaurant Restaurant owners find
themselves in a difficult situation because they do not want to lose affluent customers who are willing to spend a lot of money
at their places of business However, these same owners do not want to appear to be cold-hearted when it comes to children
It is indeed a difficult situation In the meantime, it appears
that different restaurants will have different policies about customers bringing young babies with them
Activity 19, page 25
1 A cause-effect essay: Topic 4
2 A comparison essay: Topic 1
3 A reaction essay: Topic 2
4 An argumentative essay: Topic 3
Trang 3Answer Key 3
Activity 20, page 25
Answers will vary
Unit 2
Activity 1, page 28
Possible answers:
1 Brainstorm ideas
2 Read about the topic
3 Make an outline
Activity 2, page 29
Answers will vary
Activity 3, page 30
Possible answers:
1 b How music affects our mood
c The best music to study with
2 b Why the service industry is growing
c The best jobs in the 21st century
3 b Why football is popular in the U.S
c Sports in education
4 b A vegetarian diet
c Steps to being healthy with nutrition
Activity 4, page 32
Possible answers:
Pros:
Children learn about limits
Children can spend more time outside getting exercise
There is less risk of damaging vision
Cons:
It is hard to enforce time limits
Children may be using their screens for educational
information
Activity 5, page 33
Answers will vary
Activity 6, page 33
Title: The Dangers of Texting While Driving
I Introduction
A Hook: Establish that texting while driving is dangerous
B Thesis statement: e My car accident was completely
avoidable—I was texting while driving.
II Topic of Body Paragraph 1: Beginning of the story
A c I was expecting a text message.
B I answered the message
C f I took my eyes off the road.
III Topic of Body Paragraph 2: My accident could have been
worse
A I had an accident I hit a parking meter
B a Police officer gave me a ticket.
IV Topic of Body Paragraph 3: People feel a strong need to
answer their cell phones
A h Cell phones are addictive.
B A answering a text while driving is not rational
V Topic of Body Paragraph 4: b People think that using a cell phone does not affect ability to do other things at same time.
A The Occupational Safety and Health administration warns drivers that reaction time is greatly slowed down
B Example: g Texting causes the same delayed reaction
as driving while drinking.
VI Conclusion
A The ending of the story is not as bad as it could have been
B d Advice—turn your cell phone off.
Activity 7, page 34
Answers will vary
Activity 8, page 36
Possible answers:
The Value of Bargaining
Bargaining for the best price when you are shopping is a
tough experience The buyer wants to purchase a product at the lowest possible price whereas the seller wants to maximize the potential for profit While the desires of the buyer and the seller completely oppose each other, it is in the best interest of buyers to strategize exactly how they will convince a seller to lower his/her prices Although prices are often not negotiable,
it never hurts to bargain with the seller
Activity 9, pages 37–38
Paragraph 1: The vehicle I was driving at the time was
approximately five years old
Paragraph 2: Every day I receive up to 50 text messages
Paragraph 3: The police who arrived at the accident scene were
very polite
Paragraph 4: According to Hayley Tsukayama’s article, the World
Health Organization says that video games are a serious addiction for millions of people
Paragraph 5: Some cell phones can help drivers immediately
call for emergency help if an accident occurs Paragraph 6: Why do people continue to mix texting and driving?
Activity 10, page 39
Possible answers:
Confusing Nouns
Learning nouns in a new language may seem easy, but in
fact the grammar of nouns can vary from language to language Spanish, for example, has male nouns and female nouns, but
why newspaper is masculine and magazine is feminine is a
mystery Japanese nouns have no plural form, so Japanese learners of English may think -s is unnecessary in the phrase
many books because the word many already means plural In
German, all nouns are capitalized whereas English capitalizes
nouns that name specific people, places, and things.For
example, English does not capitalize woman or city, but it
does capitalize Susan and Cairo Finally, some languages mark
the role of the noun as subject or direct object, so in Japanese,
-wa is often added to a noun as subject and -o to a noun as the
direct object of a verb English does not require suffixes to mark
the role of nouns in a sentence Because nouns express basic
ideas such as the name of a person, place, or thing, they seem easy, but they can be confusing
Trang 4Activity 11, pages 40–41
1 react
2 consists
3 stand out
4 is
5 has
6 are
7 are
8 provides
9 share
10 involves
Activity 12, page 41
1 is
2 centers
3 have
4 uses
5 promote
6 portrays
7 are
8 sends
9 live
10 helps
11 promotes
Activity 13, page 42
1 anticipate - expect
2 at once - immediately
3 bargain - deal
4 desire - want
5 minor – less important
6 occupational - work
7 shift - change
8 thereby - as a result
9 tragic - sad
10 virtually - nearly
Activity 14, pages 42–43
1 has not been tough enough
2 receive up to $1 million
3 a sudden shift in people’s attitudes
4 cause serious harm
5 bargain with someone
6 an occupational hazard
7 an ability to multitask
8 a rational mind
9 a deep desire to learn
10 a minor concern
Activity 15, pages 43–44
1 harmful
2 harm
3 maximum
4 maximize
5 negotiation
6 negotiable
7 shift
8 shifted
9 Tragically
10 tragedy
Activity 16, page 44
Answers will vary
Activity 17, page 44
1 Sometimes a word can be more than one part of speech
with no change at all, but other times the ending of the word changes to indicate whether it is a noun, verb,
adjective, or adverb
2 A roller coaster is a type of the amusement park attraction with a railroad system where cars can to travel up and down slopes at fast speeds
3 The country of Switzerland lies in the center of Europe, while Norway and Greece is are at the extremes of the continent.
4 Jambalaya is a dish from Louisiana that people make it
with rice, vegetables, and seafood
5 Texting and driving can have tragedy tragic results, so it is best don't not to look at a phone at all when operating a car. Activities 18, page 45
Possible answers:
1 The team anticipates tough competition in next week’s
championship game
2 The child’s desire for attention did not seem rational.
3 Some people can multitask up to three tasks at once.
4 In some places, bargaining can help maximize your dollar.
5 Some of the minor details of the contract are negotiable. Activity 19, page 45
Possible answers:
1 Owning a car in Vietnam is very expensive because of a high government tax, so there are many more motorcycles than cars
OR Because of a high government tax, owning a car in Vietnam
is very expensive, so there are many more motorcycles than cars
OR
In Vietnam there are many more motorcycles than cars because a high government tax makes owning a car very expensive
2 Rabbits are natural runners and can reach speeds of up to
30 or 40 mph
OR Rabbits are natural runners that can reach speeds of up to
30 or 40 mph
3 The highest score for a game in the World Cup occurred when Austria defeated Switzerland 7–5 in the quarterfinal in 1954
Activity 20, pages 46–47
Answers will vary
Trang 5Answer Key 5
Unit 3
Activity 1, pages 50–51
1 a NC; b C
2 a C; b NC
3 a NC; b C
4 a NC; b C
Activity 2, pages 53–54
Most important ideas highlighted in bold
Sentence 1: With the arrival of the South Florida Railroad in
1880, Orlando was on its way to intensive growth.
Sentence 2: Two decades later, Orlando experienced rapid
growth again on an incredible scale when Walt Disney World
opened its gates to tourists in 1971.
1 a TS – too similar
1 b X – different meaning
1 c P – best paraphrase
2 a TS – too similar
2 b P – best paraphrase
2 c X – different meaning
Activity 3, page 54
Most important ideas highlighted in bold
1 Located 22 miles southwest of Orlando, the Disney area
alone covers some 28,000 acres.
Paraphrase: Possible answer: By itself Disney includes
28,000 acres, and it is just 22 miles from Orlando
2 In addition to having Florida’s largest hotel, Walt Disney
World has an array of thrilling attractions, including the
Magic Kingdom, Epcot, Disney’s Hollywood Studios, and
Animal Kingdom
Paraphrase: Possible answer: Not only is Walt Disney World
the home of the largest hotel in Florida, but it also has
many amazing theme parks
Activity 4, page 56
Possible answers:
1 a APA: According to Wilkins (1972), “While without
grammar very little can be conveyed, without vocabulary
nothing can be conveyed” (p 111)
b MLA: According to Wilkins, “While without grammar
very little can be conveyed, without vocabulary nothing
can be conveyed” (111)
2 a APA: According to Wilkins (1972), communication
depends much more on vocabulary than on grammar (p 111)
b MLA: According to Wilkins, communication depends
much more on vocabulary than on grammar (111).
Activity 5, page 57
1 APA: References
Wilkins, D A (1972) Linguistics in language London:
Edward Arnold
2 MLA: Works Cited
Wilkins, David A Linguistics in Language Edward Arnold, 1972.
Activity 6, page 58
Possible answers:
1 Thomas Edison observed that people who fail are often
those who gave up too early
2 Mark Twain suggested that we will have more regret if we don’t participate in activities or life rather than if we do
3 Lin Yutang noted that you find true peace when you do not struggle against difficulties
4 Alice Walker pointed out that the easiest way to lose power
is to think you don’t have it
5 Oscar Wilde thought that we should enjoy life rather than take it too seriously
Activity 7, page 59–60
Answers will vary
Activity 8, page 61
Possible answers:
1 Orlando used to be a small agricultural town
2 This is due to the many theme parks
3 Orlando has experienced a high level of growth in the past twenty years, but the level of commercialism remains low despite being close to the very busy tourist area
4 Clearly, tourism has affected life in the Orlando area
Activity 9, page 61
Possible answers:
Just half a decade ago, Orlando used to be a small agricultural town, but today it is the most visited place in Florida because of the multiple theme parks there In fact, more than
55 million tourists visit this area annually These parks, however, are not actually in the city of Orlando but rather 15 miles away Although all of these parks with millions of visitors are just a few miles away, the city does not have the level of commercialism that you see near the parks Unfortunately, the city has problems with traffic because of the theme park workers who live in Orlando Tourism has clearly affected life in the Orlando area
Activity 10, page 62–63
Answers will vary
Activity 11, page 63–64
Possible answers:
Paragraph A: Important information
Julia Child, born in 1912, became internationally famous in the 1960s with the publication of her cookbook,
Mastering the Art of French Cooking The book was praised for
its sharp attention to detail, step-by-step instructions, and clear illustrations of complex cooking techniques Over the remainder of her life, Child published approximately 20 more
books, including her autobiography, My Life in France Today’s
celebrity chefs owe a debt of gratitude to Julia Child, an early pioneer of the field
Paragraph B: Important information
A world-renowned chef, Julia Child became famous for
her first cookbook, Mastering the Art of French Cooking, and she
cemented her celebrity status with several television programs,
including Julia Child & Company and Dinner at Julia’s In several
of her early programs, before television shows could be easily edited, she made mistakes in her preparations, resulting in failed dishes Ironically, her mistakes endeared her to her audience, as she demonstrated that even great chefs have bad days Child died in 2004, leaving behind her a lasting legacy of delicious food
Trang 6Synthesis of Paragraph A and B
Julia Child, 1912–2004, was a world-famous chef Her first
cookbook, Mastering the Art of French Cooking, launched her
career when it was published in the 1960s It was praised for
how it used simple language to explain complicated recipes and
made them seem simple for everyone She was also in several
television programs that people enjoyed watching One reason
people loved her cooking shows was that Child sometimes
made mistakes in the recipe, and people realized that cooking
was not a perfect science Even very experienced people like
Chef Child make mistakes She also wrote 20 books, including
her autobiography My Life in France Today millions of people
remember this great chef who inspired them to cook without fear
Activity 12, page 64
1 acute - severe
2 array - choices
3 complex - complicated
4 concede - admit you are wrong
5 congestion - a lot of people
6 found - start
7 fraction - a part
8 premium - higher quality
9 reveal - show
10 seek - look for
Activity 13, page 65
1 concede an election
2 a wide array of
3 a lasting legacy
4 an early pioneer
5 point out differences
6 a small fraction of the population
7 intensive training
8 bad congestion on the roads
9 a complex problem
10 reveal a secret
Activity 14, pages 65–66
1 acute
2 Acutely
3 commercialism
4 commercially
5 complex
6 complexity
7 intensive
8 intensifies
9 master
10 mastery
Activity 15, page 66
Answers will vary
Activity 16, page 67
1 Due to the numerous factories in that area, the quality of
the air in that regional region of the country is quite poor.
2 According to the article, the largest states are Alaska, Texas, and Montana, but Alaska and Montana has have
relatively small populations
3 Unlike just twenty years ago, obtaining a good job today require requires social networking skills.
4 An important question for to consider is whether schools with smaller class sizes produces produce better test scores.
5 Some airline officials who were early advocates for
purchasing the new aircraft have recently complained
about the lack of training for crew members
Activity 17, pages 67–68
Possible answers:
1 Badgers have short legs for digging, but they can run surprisingly fast, up to 30 kph for a short period of time OR
Even though badgers have short legs for digging, they can run surprisingly fast, up to 30 kph for a short period of time
2 The famous composer Ludwig van Beethoven lost his hearing in 1801, but he completed many of his most famous works, including his ninth symphony, around 1820 OR
Although the famous composer Ludwig van Beethoven lost his hearing in 1801, he composed many of his most famous works, including his ninth symphony, around 1820
3 Venus, which is named for the Roman goddess of love and beauty, is the second planet from the sun and has an average temperature of 462 degrees Celsius
OR Venus, named for the Roman goddess of love and beauty,
is the second planet from the sun and has an average temperature of 462 degrees Celsius
Activity 18, page 68
Possible answers:
1 In today’s society, some people believe that there is too much commercialism
2 According to this report, there is an acute problem with immigration
3 If the report reveals any missing funds, we will take action
4 Without a doubt, the day I flew in a hot air balloon was the most thrilling day of my life
5 John Glenn was a famous astronaut and a true pioneer in his field
Activity 19, pages 69–70
Answers will vary
Unit 4 Activity 1, page 76
1 ✓ the reasons that Earth’s weather has changed so much
in the last century
2 Bangkok versus Singapore as a vacation destination
3 a trip to visit my grandparents
4 ✓ the increasing use of computers in schools
5 explaining dietary guidelines for children
6 how to play the piano
Trang 7Answer Key 7
7 ✓ why some students receive scholarships
8 ✓ falling birthrates in many countries
9 Answers will vary
10 Answers will vary
Activity 2, page 77
Possible answers:
Cause of stress:
Financial worries
Tests
Illness
Effects of stress:
Poor sleep
Poor health
Depression
Activity 3, pages 78–80
Pre reading questions:
Answers will vary
Post-reading questions:
1 The purpose of this essay is to show how weather has
affected world history
2 Thesis: Although many people believe that the weather
has little influence in their lives besides determining what
clothes they wear on a particular day, the weather has in
fact caused world history to radically shift in important
ways that are still felt today
3 focus-on-effects method
4 APA
5 Causes:
a a monsoon in Japan
b fog in Long Island
c the cold winters of Russia
Effects:
a Kublai Khan failed to conquer Japan
b The British failed to defeat the American colonists
c France failed to conquer Russia
6 Answers will vary
Activity 4, pages 81–82
I Introduction
A Hook: Describe how people think they control their fate.
B Suggest that people cannot control every aspect of their
environments
C Thesis statement: The weather has changed world
history in important ways.
II Body Paragraph 1
A Provide the example of Kublai Khan and his invasion of Japan
B Cite the study of J Delgado, who describes Kublai Khan’s
failed invasion
C Discuss how Japan’s identity would have changed if
Khan had succeeded in his invasion.
III Body Paragraph 2
A Provide the example of the American Revolution against
Great Britain.
B Cite the study of W Seymour, who documents the circumstances of the battle
C Discuss how the United States might have remained a member of the British Commonwealth, if not for a heavy fog
IV Body Paragraph 3
A Provide the example of Napoleon Bonaparte’s invasion of Russia
B Cite the study of H Belloc, who documents the effect of the Russian winter.
C Discuss the consequences of Napoleon’s defeat in relation
to Russia’s rise as a world power
V Conclusion
A Summarize the three examples from the body paragraphs
B Suggest that, although weather forecasters can predict the
weather with more accuracy than in the past, the course
of history cannot be fully isolated from the effects of the weather.
Activity 5, page 83
Possible answers:
1 Two significant effects of phone addiction are diminished attention spans and lack of social engagement
2 While many people complain of bad relations with their siblings, being an only child has drawbacks
3 Reducing one’s environmental impact, saving animals, and maintaining good health are three reasons for choosing a vegetarian diet
4 Insomnia is often a result of stress and poor eating habits
Activity 6, page 84
Paragraph 1 the weather has in fact caused world
history Paragraph 2 As a result of two monsoons
Because of this unexpected defeat
Paragraph 3 Due to this fog
Consequently, today’s United Kingdom of
England Paragraph 4 However, because his dreams of glory
As a consequence of the failure of
Paragraph 5 the weather has been a key factor in
numerous
Activity 7, pages 84–85
1 If
2 as a consequence of / because of
3 Thus
4 in order to
5 Finally
6 because
7 can lead to
8 Furthermore
Trang 8Activity 8, page 86
A Simple Experiment
In our experiment, we placed three live freshwater plants
into a quart jar that was is filled with fresh water at 70 degrees
Fahrenheit We then carefully added a medium-sized goldfish
Next, we tightened tighten the lid and wrapped tape tightly
around the lid This very last step was is done to ensure that
no air could can enter or exit the bottle The jar was placed
on a shelf where it was is exposed to indirect sunlight for
approximately eight hours each day At one o’clock every day
for a week, we observed the fish swimming in the jar On several
occasions, we noticed notice that the plants emitted multiple
bubbles of a gas The fish survived for the entire week even
though no food or air was provided Our original hypothesis
was that the green plants produced a gas We now believe
believed this gas was oxygen
Activity 9, page 87
1 C
2 F; With no remarkable difference except the color of the
exterior paint
Possible answer: The two houses stood side by side with
no remarkable difference except the color of the exterior
paint
3 F; A history of many intriguing stories of leprechauns,
fairies, and elves
Possible answer: Ireland is a country with a history of many
intriguing stories of leprechauns, fairies, and elves
4 C
5 F; Because of the unprecedented popularity of this
particular film
Possible answer: Because of the unprecedented popularity
of this particular film, producers were extremely eager to
begin work on its sequel
6 C
7 F; After nearly three decades of separation
Possible answer: When the two brothers finally meet after
nearly three decades of separation, the atmosphere is
tense
8 C
9 F; Pay a great deal to talk with a so-called expert who
claims to be able to understand what dreams mean
Possible answer: I don’t want to pay a great deal to
talk with a so-called expert who claims to be able to
understand what dreams mean
10 F; Since the bus workers in the area are continuing their
strike over pay
Possible answer: Since the bus workers in the area are
continuing their strike over pay, thousands of commuters
in the capital city were once again late for work today
Activity 10, page 88
1 emit - release
2 brutal - bad
3 handily - easily
4 obstacle - problem
5 unambiguously - clearly
6 retreat - go back
7 crush - defeat
8 tempting - inviting
9 hypothesis - idea
10 superior - better Activity 11, pages 88–89
1 during the king’s reign
2 completely overlook the obvious
3 a radically different idea
4 according to the original hypothesis
5 a reciprocal agreement
6 a serious obstacle to achieving a goal
7 the soldiers were ordered to retreat
8 span several decades
9 a dreadful mistake
10 occur multiple times Activity 12, page 89
1 densely
2 dense
3 intervene
4 intervention
5 justification
6 justify
7 justified
8 temptation
9 tempting
10 tempt
Activity 13, page 90
Answers will vary
Activity 14, page 90
1 Flights from San Francisco were delayed because the fog caused limited visible visibility.
2 Barack Obama became the 44th president of the United
States on January 20, 2009, and served two terms for a
total of eight years
3 The country of Singapore was a part of the Federation of
Malaya until 1965 that is when it became an independent
country
4 One of the most famous desserts in Argentina is dulce
de leche, which is a sugary paste that people eat with ice
cream
5 O Henry is the pen-name of a well-known American author
whose short stories are considered classics.
Activity 15, page 91
Possible answers:
1 The beautiful countries of Switzerland and Austria lie in the center of Europe
2 Because the verb get has many different meanings, it is
difficult for people who are learning English
OR
Trang 9Answer Key 9
The verb get has many different meanings, so it is difficult
for people who are learning English
3 The Beatles were a musical group from the United
Kingdom that became internationally famous in the 1960s
OR
The Beatles, a musical group from the United Kingdom,
became internationally famous in the 1960s
Activity 16, page 92
Possible answers:
Lighting the World
One of the most positive outcomes of the invention of the
light bulb is that it has allowed people to expand their lives into the
dark hours of night Human productivity increased significantly
after this invention significantly because better lighting enabled
people to read, study, work, play, and socialize into the late
hours In addition, the prevalence of affordable lighting allowed
companies to continue to manufacture their products during the
night hours Electric lighting also enhanced public safety, because
city streets were illuminated without the potentially potential
danger of gas Now that electric lights are everywhere, it is almost
impossible to imagine a world without them
Activity 17, pages 92–93
1 a
2 c
3 Possible answer: Though some people think granola bars
are good for you, they can contain a lot of sugar as well
4 Possible answer: Earth’s population has increased
dramatically since 1800, and it looks like this growth will
continue
Activities 18, pages 94–95
Answers will vary
Unit 5
Activity 1, page 100
1 The steps in collecting data for a research study
2 ✓ Rio de Janeiro versus Tokyo as a site for the Summer
Olympic Games
3 ✓ Reproductive processes of mammals and reptiles
4 ✓ Societies with small families and societies with large
families
5 An analysis of voting trends and results in recent elections
in Ecuador
6 ✓ The career choice of becoming a teacher or a lawyer
7 Daily life for a student at a university
8 Information about llamas in the Andes Mountains in Peru
9 Answers will vary
10 Answers will vary
Activity 2, page 102
Answers will vary
Activity 3, pages 102–105
Pre-reading questions:
Answers will vary.
Post-reading questions:
1 The purpose of this essay is to compare two different kinds
of classroom: online versus face-to-face
2 Thesis statement: Students should not assume that either
online or face-to-face classes are superior; instead, they should focus on what they need to learn from a particular course and which learning paradigm will best facilitate their education
3 point-by-point method
4 Advantages of face-to-face classes
a Development of communication skills
b More opportunities for social interaction Advantages of online classes
a Greater convenience
b Increased student participation
5 Answers will vary
6 Possible answer: The writer could have discussed the costs associated with these two kinds of courses: books,
transportation, etc.
Activity 4, page 106
Possible answers:
Title: Online and Face-to-Face Learning in the Digital Age
I Introduction
A Describe increasing importance of computers in education
B Briefly contrast online education with traditional face-to-face classes
C Thesis statement: Students should not assume that either online or face-to-face classes are superior; instead,
they should focus on what they need to learn from a particular course and which learning paradigm will best facilitate their education.
II Body Paragraph 1
A Discuss convenience of online courses versus face-to-face courses
B Provide example of how scheduling time for online courses is more convenient than for face-to-face courses.
III Body Paragraph 2
A Discuss the different rates of student participation in online versus face-to-face courses.
B Provide scholarly evidence that supports argument that online courses increase student participation
IV Body Paragraph 3
A Discuss the differences in face-to-face communication
in these two kinds of classes.
B Provide example of specific classroom settings that benefit from face-to-face interaction
V Body Paragraph 4
A Discuss the need for adequate computer access and skills to take online courses.
B Suggest that some students spend too much time learning how to use the computer technology rather than concentrating on the subject matter
VI Body Paragraph 5
A Discuss differences in personal relationships between traditional and online classes.
Trang 10B Provide an example of how teachers cannot write effective
recommendation letters for students they do not know
personally
VII Conclusion
A Suggest that students and teachers assess their learning
and instructional styles in order to create learning
environments where everyone is likely to prosper.
B Predict that this issue will be resolved in the future
Activity 5, page 107
Possible answers:
1 Although Walt Disney’s theme parks in Orlando and
Tokyo share many of the same attractions, there are key
differences between them as well
2 While soccer and rugby originated from the same sport,
they are now significantly different in many ways
3 Despite their shared reputations as political reformers,
England’s Queen Victoria and Elizabeth II saw their position
in quite different terms
Activity 6, page 108
1 Paragraph 2: Although face-to-face Shows difference
2 Paragraph 3: As opposed to some lecture classes
Shows difference
3 Paragraph 4: Another difference between these two types
Shows difference
4 Paragraph 5: While face-to-face classes Shows difference
5 Paragraph 6: Finally, one other way traditional classrooms
are different from online classes Shows difference
6 Paragraph 7: Both face-to-face and online courses
Shows similarity
Activity 7, pages 109–111
Pre-reading questions:
Answers will vary
While-reading questions:
1 too
2 Unlike
3 whereas
4 but
5 For example
6 While
7 on the other hand
8 Thus
9 As a result
10 While
11 Consequently
12 both
Activity 8, page 111
Possible answers:
1 Egypt is not as large as Saudi Arabia
2 The population of San Francisco is not as large as the
population of Los Angeles
3 The heart is not as complex an organ as the brain
4 The weather in Tokyo is not as humid as in Bangkok
5 The economy is growing as rapidly this year as last year
6 WW1 was as not nearly as costly in terms of lives as WW2
7 Community colleges are not as expensive as universities
8 Introversion does not seem to be as common as extroversion
Activity 9, page 112
1 According to the most recent data, the population of Spain
is larger than the population/that of Greece.
2 The company’s annual report indicates excellent sales in
January, March, and July.
3 With only five days until the deadline, our team’s project is
not as good as the other team’s.
4 Many children like watching TV shows and playing video
games
5 To apply for a loan, select from our different loan packages,
fill out an application, and submit it to a loan officer at the
bank
6 According to the report, schools in California spend more
money per student than schools/those in New York.
7 For better heart health, three great forms of exercise involve
our legs: jogging, distance running, and brisk/fast walking.
8 To relax, many people like surfing the Internet, working in
the garden, and doing crossword puzzles.
Activity 10, page 113
1 vital - necessary
2 indigenous - native
3 encounter - find
4 merge - combine
5 simulate - similar
6 duplicate - copy
7 reluctance - hesitation
8 navigate - understand
9 prosper - succeed
10 isolate - alone Activity 11, page 113–114
1 facilitate student learning
2 navigate the web site easily
3 the mass extinction of dinosaurs
4 effective planning is vital
5 an animal’s natural habitat
6 duplicate the results of an experiment
7 address a problem
8 a hospitable environment
9 a reluctance to participate
10 allocate enough time for a meeting Activity 12, page 114
1 extinction
2 extinct
3 isolated
4 isolating
5 navigable
6 navigate