The list which conservationists presents only a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know.. Hundreds o[r]
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Trung Gia High School THE THIRD WRITTEN TEST - GRADE 12- (NEW TEXTBOOK)
School Year: 2018- 2019 Time allowance: 45 minutes
Name: Student Code:
Mã đề: 155
I. Choose the best answer which is closest in meaning to the given one:
1 When I write fast, my writing becomes illegible.
A. The more faster I write, the more illegibler my writing becomes
B. The faster I write, the illegibler my writing becomes
C. The faster I write, the more illegible my writing becomes
D. The fastest I write, the illegibler my writing becomes
2 He worked hard He felt very bad.
A. The hardest he worked, the worst he felt B. The more hard he worked, the worst he felt
C. The harder he worked, the worse he felt D. The worse he felt, the harder he worked
3 People must not leave bicycles in the hall.
A. Bicycles in the hall must not be left B. Bicycles must not be left in the hall
C. Bicycles must not left in the hall D. Bicycles must not be left in the hall by people
4 " Would you like to go out for dinner with us tonight?"
A. John advised me to go out for dinner with us that night
B. John invited me to go out for dinner with them that night
C. John invited me to go out for dinner with us that night
D. John invited me to go out for dinner with them tonight
II. Choose the word whose stress - pattern is different from the others:
5 A. vulnerable B. generation C. disappearance D. conservation
III. Choose A, B, C, or D which is the most suitable response to complete each of the following exchanges:
7. " Would you like to join our volunteer group this summer? " " _"
A. I wouldn't thank you B. Do you think I would?
C. Yes, I'd love to, thanks D. Yes, you are a good friend
8. " Wow, what a nice coat you are wearing!" " "
A. Thanks, my mother bought it for me B. Yes, of course, it's expensive
C. Certainly, do you like it, too? D. I like you to say that
IV. Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning
to the underlined part in each of the following questions.
9 In the future many large corporations will be wiped out and millions of jobs will be lost.
10 Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
V. Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined
word(s) in each of the following questions.
11 Some vegetables are grown without soil and artificial light.
12 Most of the female football players will be jobless when the Games are over.
VI. Read the passage and then choose the correct answer for each gap:
Books are written to provide knowledge and good books enrich the mind By putting ourselves under the influence of superior mind, we (13) _ our mental powers (14) _ good books, we learn that people everywhere are the same, in all ages, and in all places This knowledge improves our love (15) _ others and helps us to live in peace with them We also recognize that the world was made not only for man alone but for every creature that can feel hunger and thirst, warmth and cold
Though it may be possible for us to travel (16) _ the world and see the things happening today, it is not possible for us to see the things that happened in the past But good books (17) _ us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived
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VII. Choose the underlined part that needs correcting:
18. Species become extinct or endangerment for a number of reasons, but the primary cause is the destruction of habitat
A B C
by human activities
D
19. To live healthily we should stop smoking and drinking and to do exercise regularly
A B C D
20. Without the particularly habitat, the species could not survive
A B C D
VIII. Read the passage carefully and choose the correct answer:
By the year 2025, the Earth could lose as many as one fifth of all species known to exist today In recent centuries, hundreds of species have disappeared, almost always as a result of human activities The passenger pigeon, one familiar example, was a source of food until excessive hunting and habitat loss caused its extinction in 1914 The North American bison, whose populations were decimated by settlers and market hunters in the 1800s, came close to sharing the same fate Bison survive today only because of the efforts of early conservationists
Today, species require such efforts more urgently than ever An essential task that falls to present-day conservationists is to determine which species are most, endangered, so that conservation resources' can be applied where action is needed most Species are categorized by the degree to which their survival in the wild is threatened World Wildlife Fund offers a sampling of animals and plants that fall mainly within the two most serious categories of- threat: critically endangered and endangered What threatens these species' existence? Some of the top threats are habitat destruction by unsustainable logging and ever-encroaching human settlement; pollution of water, soil, and air by toxic chemicals; unnatural climate changes due to fossil fuel use; unmanaged fishing that exhausts fish stocks; and illegal hunting to supply the demand for skins, hides, traditional medicines, food, and tourist souvenirs The list which conservationists presents only
a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know Hundreds of species without common names have been left out, which means that while many mammals are on this list, only a few insects and mollusks are included
Species listed here range from the largest animal on Earth, the blue whale, to the majestic tiger, to the humble thick-shell pond snail Large or small, beautiful or ugly, all species play a role in the complex circle of life All of us depend on the natural resources of our planet Each time a species is lost, the complexity, natural balance, and beauty of our world is diminished And what threatens plants and animals ultimately threatens people as well
21. According to the last paragraph, _
A. human beings depend on natural resources to survive
B. species extinction has no relationship to human beings
C. what threaten plants and animals can do nothing to human beings
D. not every, species has a role in the circle of life
22. Species are categorized _
A. to give preferential right to conserve B. to prevent hunting
C. to destroy their habitats D. to provide food
23. According to the first paragraph _
A. the main cause of species extinction is human activities
B. species extinction is only caused by hunting
C. human beings protect wife life much more than they do harm to them
D. we can stop radically species extinction by 2025
24. The North American bison _
A. was raised by settlers in 1800s B. has escaped from extinction thanks to conservationists
C. was not the aim of human hunting D. was completely extinct in 1800s
25. Which sentence is true?
A. Conservationists have good knowledge of all kinds of mollusks
B. Medicine is not a factor to cause species extinction
C. Pollution does nothing to species extinction
D. The list which conservationists present does not include all kinds of species
IX. Choose the best answer:
26. The more waste paper we recycle, _
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A. the least trees we preserve B. the less trees we preserve
C. the more trees we preserve D. the most trees we preserve
27. Many teenagers show signs of anxiety and _ when being asked about their future
28. Many modern medicines are derived _ plants and animals
29. He had his car
30. Williams is working _ an export company He intends to apply _ another job because he is not satisfied _ the salary
A. at / out / into B. for / for / with C. from/ on/ for D. in / on / at
31. The more powerful weapons are, the more terrible the _ is
32. Peter has been working for 10 hours He _ be very tired now
33. This road is that one
A. the most narrow B. more narrow than C. the narrowest D. narrower than
34. WWF is _ leading privately supported international conservation organization in the world, and has sponsored more than 2,000 projects in 116 countries
35. You _ take your umbrella along with you today It _ rain later on this afternoon
A. ought to / mustn't B. should/ might C. will / must D. needn't / will
36. Many nations have laws offering protection to these species, such as forbidding hunting, restricting land development
or creating _
37. 15,589 species (7,266 animal species and 8,323 plant species) are now considered _ risk _ extinction
38. The economic conditions today are _ they were in the past
A. much more good B. much better C. much better than D. the best than
39. Someone who is _ is hopeful about the future or the success of something in particular
40. Washing machines, vacuum cleaners, and dish washers are labor _ devices which help us do housework easily and quickly
41. A / an _ species is a population of an organism which is at risk of becoming extinct
42. It's becoming to find a job
A. most and more difficult B. more difficult than C. more and more difficult D. more and most difficult
43. On _ Internet and with cable television w e can select information from _ wide variety of sources
44. She plays the piano _ as she sings
A. as beautifully B. more beautifully C. as beautiful D. the most beautifully
45. Many people believe that _ human beings will never used up all _ natural resources on earth
46. is the existence of a wide variety of plant and animal species living in their natural environment
47. Those workers are in difficulty because wage increases cannot keep up _ inflation
48. Probability of extinction depends _ both the population size and fine details of the population demography
X. Choose the word whose underlined part is pronounced differently from the others:
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Trung Gia High School THE THIRD WRITTEN TEST - GRADE 12- (NEW TEXTBOOK)
School Year: 2018- 2019 Time allowance: 45 minutes
Name: Student Code:
Mã đề: 189
I. Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined
word(s) in each of the following questions.
1 Some vegetables are grown without soil and artificial light.
2 Most of the female football players will be jobless when the Games are over.
II. Choose the word whose stress - pattern is different from the others:
3 A. generation B. conservation C. vulnerable D. disappearance
III. Choose the word whose underlined part is pronounced differently from the others:
IV. Choose the underlined part that needs correcting:
7. To live healthily we should stop smoking and drinking and to do exercise regularly
A B C D
8. Without the particularly habitat, the species could not survive
A B C D
9. Species become extinct or endangerment for a number of reasons, but the primary cause is the destruction of habitat by
human activities
D
V. Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to
the underlined part in each of the following questions.
10 Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
11 In the future many large corporations will be wiped out and millions of jobs will be lost.
VI. Read the passage and then choose the correct answer for each gap:
Books are written to provide knowledge and good books enrich the mind By putting ourselves under the influence of superior mind, we (12) _ our mental powers (13) _ good books, we learn that people everywhere are the same, in all ages, and in all places This knowledge improves our love (14) _ others and helps us to live in peace with them We also recognize that the world was made not only for man alone but for every creature that can feel hunger and thirst, warmth and cold
Though it may be possible for us to travel (15) _ the world and see the things happening today, it is not possible for us to see the things that happened in the past But good books (16) _ us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived
VII. Choose A, B, C, or D which is the most suitable response to complete each of the following exchanges:
17. " Wow, what a nice coat you are wearing!" " "
A. Certainly, do you like it, too? B. Thanks, my mother bought it for me
C. Yes, of course, it's expensive D. I like you to say that
18. " Would you like to join our volunteer group this summer? " " _"
A. Do you think I would? B. Yes, you are a good friend
C. I wouldn't thank you D. Yes, I'd love to, thanks
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VIII. Choose the best answer:
19. It's becoming to find a job
A. most and more difficult B. more difficult than C. more and most difficult D. more and more difficult
20. Many nations have laws offering protection to these species, such as forbidding hunting, restricting land development
or creating _
21. A / an _ species is a population of an organism which is at risk of becoming extinct
22. The more waste paper we recycle, _
A. the more trees we preserve B. the least trees we preserve
C. the most trees we preserve D. the less trees we preserve
23. He had his car
24. This road is that one
A. the most narrow B. the narrowest C. narrower than D. more narrow than
25. is the existence of a wide variety of plant and animal species living in their natural environment
26. You _ take your umbrella along with you today It _ rain later on this afternoon
A. ought to / mustn't B. should/ might C. will / must D. needn't / will
27. Williams is working _ an export company He intends to apply _ another job because he is not satisfied _ the salary
A. for / for / with B. at / out / into C. in / on / at D. from/ on/ for
28. The economic conditions today are _ they were in the past
A. much better B. the best than C. much better than D. much more good
29. Someone who is _ is hopeful about the future or the success of something in particular
30. Those workers are in difficulty because wage increases cannot keep up _ inflation
31. The more powerful weapons are, the more terrible the _ is
32. She plays the piano _ as she sings
A. as beautifully B. the most beautifully C. as beautiful D. more beautifully
33. On _ Internet and with cable television w e can select information from _ wide variety of sources
34. Probability of extinction depends _ both the population size and fine details of the population demography
35. Many teenagers show signs of anxiety and _ when being asked about their future
36. Peter has been working for 10 hours He _ be very tired now
37. Many people believe that _ human beings will never used up all _ natural resources on earth
38. Many modern medicines are derived _ plants and animals
39. 15,589 species (7,266 animal species and 8,323 plant species) are now considered _ risk _ extinction
40. Washing machines, vacuum cleaners, and dish washers are labor _ devices which help us do housework easily and quickly
41. WWF is _ leading privately supported international conservation organization in the world, and has sponsored more than 2,000 projects in 116 countries
IX. Choose the best answer which is closest in meaning to the given one:
42 " Would you like to go out for dinner with us tonight?"
A. John advised me to go out for dinner with us that night
B. John invited me to go out for dinner with them that night
C. John invited me to go out for dinner with us that night
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D. John invited me to go out for dinner with them tonight
43 People must not leave bicycles in the hall.
A. Bicycles must not be left in the hall by people B. Bicycles must not be left in the hall
C. Bicycles must not left in the hall D. Bicycles in the hall must not be left
44 He worked hard He felt very bad.
A. The worse he felt, the harder he worked B. The harder he worked, the worse he felt
C. The more hard he worked, the worst he felt D. The hardest he worked, the worst he felt
45 When I write fast, my writing becomes illegible.
A. The faster I write, the more illegible my writing becomes
B. The more faster I write, the more illegibler my writing becomes
C. The faster I write, the illegibler my writing becomes
D. The fastest I write, the illegibler my writing becomes
X. Read the passage carefully and choose the correct answer:
By the year 2025, the Earth could lose as many as one fifth of all species known to exist today In recent centuries, hundreds of species have disappeared, almost always as a result of human activities The passenger pigeon, one familiar example, was a source of food until excessive hunting and habitat loss caused its extinction in 1914 The North American bison, whose populations were decimated by settlers and market hunters in the 1800s, came close to sharing the same fate Bison survive today only because of the efforts of early conservationists
Today, species require such efforts more urgently than ever An essential task that falls to present-day conservationists is to determine which species are most, endangered, so that conservation resources' can be applied where action is needed most Species are categorized by the degree to which their survival in the wild is threatened World Wildlife Fund offers a sampling of animals and plants that fall mainly within the two most serious categories of- threat: critically endangered and endangered What threatens these species' existence? Some of the top threats are habitat destruction by unsustainable logging and ever-encroaching human settlement; pollution of water, soil, and air by toxic chemicals; unnatural climate changes due to fossil fuel use; unmanaged fishing that exhausts fish stocks; and illegal hunting to supply the demand for skins, hides, traditional medicines, food, and tourist souvenirs The list which conservationists presents only
a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know Hundreds of species without common names have been left out, which means that while many mammals are on this list, only a few insects and mollusks are included
Species listed here range from the largest animal on Earth, the blue whale, to the majestic tiger, to the humble thick-shell pond snail Large or small, beautiful or ugly, all species play a role in the complex circle of life All of us depend on the natural resources of our planet Each time a species is lost, the complexity, natural balance, and beauty of our world is diminished And what threatens plants and animals ultimately threatens people as well
46. According to the first paragraph _
A. species extinction is only caused by hunting
B. the main cause of species extinction is human activities
C. human beings protect wife life much more than they do harm to them
D. we can stop radically species extinction by 2025
47. According to the last paragraph, _
A. human beings depend on natural resources to survive
B. what threaten plants and animals can do nothing to human beings
C. species extinction has no relationship to human beings
D. not every, species has a role in the circle of life
48. The North American bison _
A. has escaped from extinction thanks to conservationists B. was raised by settlers in 1800s
C. was completely extinct in 1800s D. was not the aim of human hunting
49. Species are categorized _
A. to destroy their habitats B. to provide food
C. to give preferential right to conserve D. to prevent hunting
50. Which sentence is true?
A. Conservationists have good knowledge of all kinds of mollusks
B. The list which conservationists present does not include all kinds of species
C. Pollution does nothing to species extinction
D. Medicine is not a factor to cause species extinction
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Trung Gia High School THE THIRD WRITTEN TEST - GRADE 12- (NEW TEXTBOOK)
School Year: 2018- 2019 Time allowance: 45 minutes
Name: Student Code:
Mã đề: 223
I. Choose the word whose underlined part is pronounced differently from the others:
II. Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to
the underlined part in each of the following questions.
3 Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
4 In the future many large corporations will be wiped out and millions of jobs will be lost.
III. Mark the letter A, B, C, or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined
word(s) in each of the following questions.
5 Some vegetables are grown without soil and artificial light.
6 Most of the female football players will be jobless when the Games are over.
IV. Choose A, B, C, or D which is the most suitable response to complete each of the following exchanges:
7. " Wow, what a nice coat you are wearing!" " "
A. Certainly, do you like it, too? B. Thanks, my mother bought it for me
C. I like you to say that D. Yes, of course, it's expensive
8. " Would you like to join our volunteer group this summer? " " _"
A. I wouldn't thank you B. Yes, you are a good friend
C. Do you think I would? D. Yes, I'd love to, thanks
V. Read the passage and then choose the correct answer for each gap:
Books are written to provide knowledge and good books enrich the mind By putting ourselves under the influence of superior mind, we (9) _ our mental powers (10) _ good books, we learn that people everywhere are the same, in all ages, and in all places This knowledge improves our love (11) _ others and helps us to live in peace with them We also recognize that the world was made not only for man alone but for every creature that can feel hunger and thirst, warmth and cold
Though it may be possible for us to travel (12) _ the world and see the things happening today, it is not possible for us to see the things that happened in the past But good books (13) _ us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived
VI. Choose the underlined part that needs correcting:
14. Without the particularly habitat, the species could not survive
A B C D
15. To live healthily we should stop smoking and drinking and to do exercise regularly
A B C D
16. Species become extinct or endangerment for a number of reasons, but the primary cause is the destruction of habitat
A B C
by human activities
D
VII. Choose the best answer which is closest in meaning to the given one:
17 He worked hard He felt very bad.
A. The more hard he worked, the worst he felt B. The worse he felt, the harder he worked
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C. The hardest he worked, the worst he felt D. The harder he worked, the worse he felt
18 When I write fast, my writing becomes illegible.
A. The faster I write, the illegibler my writing becomes
B. The faster I write, the more illegible my writing becomes
C. The more faster I write, the more illegibler my writing becomes
D. The fastest I write, the illegibler my writing becomes
19 People must not leave bicycles in the hall.
A. Bicycles in the hall must not be left B. Bicycles must not be left in the hall by people
C. Bicycles must not left in the hall D. Bicycles must not be left in the hall
20 " Would you like to go out for dinner with us tonight?"
A. John advised me to go out for dinner with us that night
B. John invited me to go out for dinner with them that night
C. John invited me to go out for dinner with us that night
D. John invited me to go out for dinner with them tonight
VIII. Choose the best answer:
21. A / an _ species is a population of an organism which is at risk of becoming extinct
22. The more waste paper we recycle, _
A. the most trees we preserve B. the more trees we preserve
C. the least trees we preserve D. the less trees we preserve
23. This road is that one
A. the narrowest B. narrower than C. more narrow than D. the most narrow
24. He had his car
25. Probability of extinction depends _ both the population size and fine details of the population demography
26. Many teenagers show signs of anxiety and _ when being asked about their future
27. Washing machines, vacuum cleaners, and dish washers are labor _ devices which help us do housework easily and quickly
28. The more powerful weapons are, the more terrible the _ is
29. Many people believe that _ human beings will never used up all _ natural resources on earth
30. She plays the piano _ as she sings
A. the most beautifully B. as beautiful C. more beautifully D. as beautifully
31. Williams is working _ an export company He intends to apply _ another job because he is not satisfied _ the salary
A. in / on / at B. from/ on/ for C. for / for / with D. at / out / into
32. Many modern medicines are derived _ plants and animals
33. You _ take your umbrella along with you today It _ rain later on this afternoon
A. ought to / mustn't B. will / must C. should/ might D. needn't / will
34. On _ Internet and with cable television w e can select information from _ wide variety of sources
35. Peter has been working for 10 hours He _ be very tired now
36. Someone who is _ is hopeful about the future or the success of something in particular
37. The economic conditions today are _ they were in the past
A. much better than B. the best than C. much better D. much more good
38. WWF is _ leading privately supported international conservation organization in the world, and has sponsored more than 2,000 projects in 116 countries
39. is the existence of a wide variety of plant and animal species living in their natural environment
40. 15,589 species (7,266 animal species and 8,323 plant species) are now considered _ risk _ extinction
Trang 9Trang 92023/3 - Mã đề: 99202315599202315165325
41. It's becoming to find a job
A. most and more difficult B. more and most difficultC. more difficult than D. more and more difficult
42. Those workers are in difficulty because wage increases cannot keep up _ inflation
43. Many nations have laws offering protection to these species, such as forbidding hunting, restricting land development
or creating _
IX. Choose the word whose stress - pattern is different from the others:
45 A. disappearance B. generation C. vulnerable D. conservation
X. Read the passage carefully and choose the correct answer:
By the year 2025, the Earth could lose as many as one fifth of all species known to exist today In recent centuries, hundreds of species have disappeared, almost always as a result of human activities The passenger pigeon, one familiar example, was a source of food until excessive hunting and habitat loss caused its extinction in 1914 The North American bison, whose populations were decimated by settlers and market hunters in the 1800s, came close to sharing the same fate Bison survive today only because of the efforts of early conservationists
Today, species require such efforts more urgently than ever An essential task that falls to present-day conservationists is to determine which species are most, endangered, so that conservation resources' can be applied where action is needed most Species are categorized by the degree to which their survival in the wild is threatened World Wildlife Fund offers a sampling of animals and plants that fall mainly within the two most serious categories of- threat: critically endangered and endangered What threatens these species' existence? Some of the top threats are habitat destruction by unsustainable logging and ever-encroaching human settlement; pollution of water, soil, and air by toxic chemicals; unnatural climate changes due to fossil fuel use; unmanaged fishing that exhausts fish stocks; and illegal hunting to supply the demand for skins, hides, traditional medicines, food, and tourist souvenirs The list which conservationists presents only
a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know Hundreds of species without common names have been left out, which means that while many mammals are on this list, only a few insects and mollusks are included
Species listed here range from the largest animal on Earth, the blue whale, to the majestic tiger, to the humble thick-shell pond snail Large or small, beautiful or ugly, all species play a role in the complex circle of life All of us depend on the natural resources of our planet Each time a species is lost, the complexity, natural balance, and beauty of our world is diminished And what threatens plants and animals ultimately threatens people as well
46. The North American bison _
A. has escaped from extinction thanks to conservationists
B. was not the aim of human hunting
C. was raised by settlers in 1800s
D. was completely extinct in 1800s
47. Which sentence is true?
A. Medicine is not a factor to cause species extinction
B. The list which conservationists present does not include all kinds of species
C. Conservationists have good knowledge of all kinds of mollusks
D. Pollution does nothing to species extinction
48. Species are categorized _
C. to destroy their habitats D. to give preferential right to conserve
49. According to the first paragraph _
A. the main cause of species extinction is human activities
B. human beings protect wife life much more than they do harm to them
C. species extinction is only caused by hunting
D. we can stop radically species extinction by 2025
50. According to the last paragraph, _
A. what threaten plants and animals can do nothing to human beings
B. human beings depend on natural resources to survive
C. species extinction has no relationship to human beings
D. not every, species has a role in the circle of life
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Trung Gia High School THE THIRD WRITTEN TEST - GRADE 12- (NEW TEXTBOOK)
School Year: 2018- 2019 Time allowance: 45 minutes
Name: Student Code:
Mã đề: 257
I. Mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to
the underlined part in each of the following questions.
1 Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
2 In the future many large corporations will be wiped out and millions of jobs will be lost.
II. Read the passage and then choose the correct answer for each gap:
Books are written to provide knowledge and good books enrich the mind By putting ourselves under the influence of superior mind, we (3) _ our mental powers (4) _ good books, we learn that people everywhere are the same, in all ages, and in all places This knowledge improves our love (5) _ others and helps us to live in peace with them We also recognize that the world was made not only for man alone but for every creature that can feel hunger and thirst, warmth and cold
Though it may be possible for us to travel (6) _ the world and see the things happening today, it is not possible for us to see the things that happened in the past But good books (7) _ us to see not only into the most remote regions of the world today, but also into the world in which our ancestors lived
III. Read the passage carefully and choose the correct answer:
By the year 2025, the Earth could lose as many as one fifth of all species known to exist today In recent centuries, hundreds of species have disappeared, almost always as a result of human activities The passenger pigeon, one familiar example, was a source of food until excessive hunting and habitat loss caused its extinction in 1914 The North American bison, whose populations were decimated by settlers and market hunters in the 1800s, came close to sharing the same fate Bison survive today only because of the efforts of early conservationists
Today, species require such efforts more urgently than ever An essential task that falls to present-day conservationists is to determine which species are most, endangered, so that conservation resources' can be applied where action is needed most Species are categorized by the degree to which their survival in the wild is threatened World Wildlife Fund offers a sampling of animals and plants that fall mainly within the two most serious categories of- threat: critically endangered and endangered What threatens these species' existence? Some of the top threats are habitat destruction by unsustainable logging and ever-encroaching human settlement; pollution of water, soil, and air by toxic chemicals; unnatural climate changes due to fossil fuel use; unmanaged fishing that exhausts fish stocks; and illegal hunting to supply the demand for skins, hides, traditional medicines, food, and tourist souvenirs The list which conservationists presents only
a fraction of the species at risk of extinction today and does not include thousands of species whose status we do not yet know Hundreds of species without common names have been left out, which means that while many mammals are on this list, only a few insects and mollusks are included
Species listed here range from the largest animal on Earth, the blue whale, to the majestic tiger, to the humble thick-shell pond snail Large or small, beautiful or ugly, all species play a role in the complex circle of life All of us depend on the natural resources of our planet Each time a species is lost, the complexity, natural balance, and beauty of our world is diminished And what threatens plants and animals ultimately threatens people as well
8. According to the first paragraph _
A. species extinction is only caused by hunting
B. we can stop radically species extinction by 2025
C. the main cause of species extinction is human activities
D. human beings protect wife life much more than they do harm to them
9. The North American bison _
A. was completely extinct in 1800s B. was raised by settlers in 1800s
C. was not the aim of human hunting D. has escaped from extinction thanks to conservationists
10. According to the last paragraph, _
A. what threaten plants and animals can do nothing to human beings
B. species extinction has no relationship to human beings
C. not every, species has a role in the circle of life