‘way to explain life in the communities of these isolated ecosystems, but has developed into a catalyst that has sparked heavier conservation efforts on behalf of these endangered habita
Trang 1
Hive SOR ZTE et eee iste
islands are, the fewer species they are able to sustain, Certain species of birds and animals
may only be found on these islands If they lose the competition for resources, they: will
be gone forever For example, the Bogor Botanical Garden ‘in Indonesia was created fifty
years ago, leaving an isolated woodland area where lush forest had once been Twenty
of the sixty-two original species of exotic birds have disappeared completely, and four
species are severely endangered
The model scientists developed has provided beneficial information regarding the
conservation of these areas that are threatened by man’s need for reso He!
ft ital will Contiiue, many’ feel that with Ủ:6 lạ Ms: can’: be presenvec ne:
degree One solution suggests that a natural corridor be sustained between the isolated
communities For example, scientists in the Netherlands are looking at the possibility of leaving paths of trees and shrubs between these islands They feel it will aid in maintaining the diversity of species there The island biogeography model has inspired biologists to begin researching conservation methods Such methods include the establishment of nature reserves and programs to help pian the use of land ina way that would protect the
It is a harsh reality that much of the life on these islands cannot be sustained Some species will inevitably become extinct The island biogeography model first started as a
‘way to explain life in the communities of these isolated ecosystems, but has developed into
a catalyst that has sparked heavier conservation efforts on behalf of these endangered habitats The model has served as a tool that has opened the eyes of many who hope to conserve as much tropical forest life as possible
"> immigration
the act of moving to a new area
ĐNILIHA
ĐNDIaoS
nian
ĐNiqv3
Practice Test 659 —
Trang 2
meaning to
(A) unpredictable
~ (B) unstable
(C) changing
(D) graceful The word ihey in paragraph 2 refers to (A) species
(B) arthropods (C) mangrove trees (D) scientists
Why does the author discuss the mangrove tree islands in Florida?
(A) To demonstrate the equilibrium hypothesis
(B) To contrast man-made and natural _ lslands :
(C) To explain the origin of the island biogeography model
(D) To confirm the research regarding
immigration
According to paragraph 4, why is the
of predators
larger islands
(C) Newer species take over all the
resources
the repopulation of islands?
(A) Nature tends to keep the islands in equilibrium
(B) Immigration balances species extinction
(C) The number of species usually remains constant
(D) The diversity of the species stays the
The word fluid in the passage is closest in
extinction rate higher on larger islands?
- (A) Larger islands house a larger number (B) The rate of immigration is higher on
(D) They house a number of older species
._ Which of the following is NOT true about
closest in meaning to
(A) cultivate (B) encounter (C) feed (D) support
The word they in paragraph 4 refers to
(A) species (B) resources (C) birds
(D) island places
| Which of the following can be inferred
from paragraph 4?
(A) Man’s destruction of nature must
come to a halt to preserve island life
- (B) Endangered species will be saved
when humans stop creating isolated islands
(C) Species will maintain equilibriuna if
these islands are left untouched
(D) Most island extinctions are caused by human's need for resources
Which of the following best expresses the essential information in the highlighted
sentence? Incorrect answer choices change the meaning in important ways or leave out essential information
(A) Life in isolated areas can be
conserved despite the high demand for natural resources
(B) With planning, substitutes for natural
resources can be found and island
life preserved
(C) The number of islands canbe |
reduced, so more species will survive
the danger of extinction
(D) The danger of extinction can be
~ lessened if humans work to conserve natural energy and resources
Trang 3
0 The word catalyst in the passage is
: closest in meaning to
(A) means
(B) process
(C) awareness (D) legislation
Look at the four squares [Img] that indicate where the following sentence could be added to the passage
However, while many of the island’s
older inhabitants may lose out to newer species, the number of species
on the island will stay the same
Where would the sentence best fit?
* (A) First square (B) Second square
« (C) Third square
> (D) Fourth square
2: All of the following are correct about the
island biogeography model EXCEPT:
(A) The model provided essential
information regarding conservation
(B) The equilibrium hypothesis was proved
true on an island of arthropods
(C) Scientists discovered ways to control the number of species becoming
extinct
(D) The research mainly studied islands
created by man's need for resources
13, Directions: An introductory sentence for a
brief summary of the passage is provided
below Complete the summary by
selecting the THREE answer choices that
express the most important ideas in the
passage Some answer choices do not belong in the summary because they
express ideas that are not presented in the passage or are minor ideas in the passage _ This question is worth 2 points,
This passage describes the island biogeography model with its equilibrium hypothesis in the preservation of endangered species in isolated areas
ĐNLiIIMAA
9NDVaS
| oninausts
ONIdvaa
Answer Choices (A) The experiment in Florida confirmed that the number of arthropods stayed the same upon repopulation
(B) The trial in the Netherlands should
provide beneficial information for conservation efforts
(C) The study revealed that the number of species on an island stays in balance
while the composition of species can vary greatly
(D) The model led to efforts to conserve as many habitats as possible through natural corridors and planned land use
(E) Unless steps-are taken, more and more species will become endangered and extinct
(F) Scientists began with a study of the stability and makeup of island communities and made important
discoveries
Practice Test 661 — _s -
a}
> ba)
5
m
=
m
tị
Mi
Trang 5
LISTENING
Listening Section
Directions
In this section, you will listen to four lectures and two conversations You will hear each lecture
ĐNILIMHAA
ĐNIXV3dS
| ONINALSIT
ĐNI0v3a
After each listening passage, you will answer some questions about it Most questions are
worth one point, but some questions are worth more than one point The directions indicate how many points you may receive
You will have 30 to 40 minutes to both listen and answer the questions The questions ask about the main idea and supporting details Some questions ask about a speaker's purpose
You may take notes while you listen You may use your notes to help you answer the questions
Your notes will not be scored,
In some questions, you will see this icon: () This means you will hear part of the lecture or
Practice Test 663 — _.s
Trang 6
— 664 Practice Test
“ :
Trang 7
What is the main topic of the lecture?
(A) Why sharks are probably solitary hunters
(B) How sharks send-messages t6 each
(C) The differences between male and
female sharks
(D) The hunting patterns and behaviors of
sharks
Listen again to part of the lecture Then
answer the question ()
What does the professor mean when he
says this: (
(A) Sharks and wolves have many similar
characteristics
(B) Sharks may actually hunt more tike
" -wolves than leopards
# (C) Researchers found that sharks did
ác not always hunt in packs
(D) ‘Scientists are starting to learn about
: solitary hunting behavior in sharks
What is the professor's attitude toward the
- researchers who worked around Cocos
(A) He admires them for their work
(B) He does not understand why they did it
(C) He thinks it was not worth the danger
(D) He does not believe they actually did it
KIIN T404 CA Me
4 According to the passage, why do old sharks let young sharks hunt first?
(A) To make sure they get enough to eat (B) To allow them to gain experience (C) To learn new techniques from them (D) To get food remains from them
How does the professor organize the information about tracking sharks that
he presents to the class?
(A) He gives information about the
' difficulties of tracking the sharks
(B) He explains the process and the
information scientists learn from it
(C) He describes why it is important to track the sharks /
(D) He tells the students about his own
experience tracking sharks
What can be inferred about whales?
(A) They are not as intelligent as sharks
(B) They tend to swim in unfamiliar areas
(C) They cannot defend themselves
.(D) They are one type of sharks’ prey
Practice Test 665 —
ĐNIWV3dS
| ONINALSI
PY
al
„
mee
a