Đáp án Unit 10 sách bài tập tiếng anh 11
READING
Part 1. Read the passage and choose the best option A, B, C or D to complete each of the following sentences.
About 200 million years ago, as the Triassic Period came to a close, many species of animals disappeared from the face of the earth. Scientists previously believed that the series of extinctions happened over a period of 15 to 20 million years. Recent discoveries in Nova Scotia suggest, however, that the extinctions may have happened over a much shorter period of time, perhaps less than 850,000 years.
Evidence for a rapid extinction of species at the end of the Triassic Period is found in the McCoy Brook Formation along the Bay of Fundy in Nova Scotia. Fossils found in this formation indicate a rapid disappearance of species rather than a slow and gradual change over time. One explanation for a relatively sudden extinction at the end of the Triassic may be that a large meteorite struck the earth at the time and is responsible for a 70- kilometre hole nearby. If geologists and other researchers can find evidence, such as shocked quartz in the rock formations, that a meteorite did strike the earth, it would give more credence to the theory of rapid Triassic extinctions. It is possible, however, that even if a rapid extinction happened in and around Nova Scotia, it did not necessarily occur in the rest of the world.
1. The main topic of this passage is _____ .
A. the disappearance of animal species at the end of the Triassic Period
B. the evidence of a relatively sudden extinction of species
C. the possibility of an extinction happening simultaneously throughout the world
D. a meteorite hole in the Bay of Fundy in Nova Scotia
2. The word that could best replace the word “close” is _____ .
A. connection
B. separation
C. dispersion
D. end
3. The author uses the phrase “face of the earth” in order to_____ .
A. emphasize the disappearance of many specie of animals
B. focus on one part of the earth
C. focus on one period of time
D. point out the reference to land, not water
4. The word that is closest in meaning to the word “relatively” is_____ .
A. comparatively
B. independently
C. phenomenally
D. visibly
Part 2. Read the passage and then do the exercises that follow.
Zoo – Then and Now
Modem zoos are very different’ from zoos that were built fifty years ago. At that time, zoos were places where people could go to see animals from many parts of the world. The animals lived in cages that were made of concrete with iron bars, cages that were easy to keep clean. Unfortunately for the animals, the cages were small and impossible to hide in. The zoo environment was anything but natural. Although the zoo keepers took good care of the animals and fed them well, many of the animals did not thrive: they behaved in strange ways and they often became ill.
In modem zoos, people can see animals in more natural habitats. The animals are given more freedom in larger areas so that they can live more as they would in nature. Even the appearance of zoos has changed. Trees and grass grow in the cages and streams of water flow through the areas that the animals live in. There are few bars: instead, there is often only a cheap ditch, filled with water, which is called a moat. The moat surrounds an area where several species of animals live together as they would naturally. For example, in the San Diego Zoo, the visitor can walk through a huge special cage that is filled with trees, some small animals and many birds. This particular kind of cage is called an aviary: it is large enough that the birds can live naturally. The birds in the aviary fly around, make nests in the trees and hunt for food. At the Zoological Park in New York City, because of special night lights, people can observe nocturnal animals that most people have never seen: these animals are active only at night, when most zoos are closed. In a zoo like the Arizona Sonora Desert Museum, people can see. animals that live in special environments like the desert. Some other zoos have special places for visitors to watch animals that live under water like fish. Still other zoos have special places for animals that live in cold polar surroundings ‘like the great bear from the Arctic Region.
Modem zoos not only display animals for visitors, but they also preserve and save endangered species. Endangered animals such as the American bald eagle and bison are now living and producing offspring in zoos. For this reason, fifty years from now the grandchildren of today’s visitors will (Still be able to enjoy watching these animals.
Exercise 1. Choose the statement that is the main idea of the passage.
A. Zoos are now places to preserve animals and to display them in their natural surroundings.
B. Zoos are places where people can see animals from all over the world.
C. A modem zoo has many cages with bars.
D. The American bald eagle is an endangered species.
Exercise 2. Tick (√) whether each of the following statements is true (T) or false (F).
Đáp án
Part 1.
| 1. B | 2. D | 3. A | 4. A |
Part 2.
Exercise 1.
A
Exercise 2.
| 1. T | 2. F | 3. F | 4. F | 5. T | 6. T |
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