Đọc các đoạn văn sau và điền A, B, C hoặc D vào chỗ trống tương ứng với phương án lựa chọn đúng:
Đoạn văn 1:
We are all destroying the earth. The seas and the rivers are too dirty to swim in. There is so much smoke in the air that it is unhealthy to live in many of the world’s cities. In one well-known city, for example, poisonous gases from cars pollute the air so much that traffic policemen have to wear oxygen masks.
We have cut down so many trees that there are now vast areas of land all over the world. As a result, farmers in parts of Africa cannot grow enough food to eat. In certain countries in Asia there is too little rice. Moerover, we do not take enough care of the countryside. Wild animals are quickly disappearing. For instance, tigers are rare in India now and because we have killed too many for them to survive. However, it isn’t enough simply to talk about the problem. We must act now before it is too late to do anything about it. Join us now. Save the earth.
1. Why can’t we swim in the seas and the rivers?
A. because they are too dirty
B. because they are too healthy
C. because they are too harmful
D. because there is too much smoke
2. How is the air in many of the world’s cities?
A. it is very pure
B. there is so much smoke in it
C. it is healthy to breathe it
D. none are correct
3. What kinds of animals are rare in India now?
A. lions
B. tigers
C. elephants
D. bears
4. The result of cutting down trees in Asia and Africa is
A. farmers cannot grow enough to eat
B. there is too little rice
C. a and b are correct
D. a and b are incorrect
5. Wild animals are quickly disappearing because
A. we take care of the city
B. we do not take care of the city
C. we take care of the countryside
D. we do not take care of the countryside
Đoạn văn 2:
Scientists claim that air pollution causes a decline in the world's average air temperature. in order to prove that theory, ecologists have turned to historical data relation to especially huge volcanic eruption. They suspected that volcanoes affect weather changes that are similar to air pollution.
One source of information is the effect of the eruption of Tambora, a volcano in Sumbawa, the Dutch East Indies, in April 1815. The largest recorded volcanic eruption, Tambawa threw 150 tons of fine ash into the stratosphere. The ash from volcano spreads worldwide in a few days and remains in the air for years . Its effect is to turn into incoming solar radiation into space and thus cools the earth . For example , records of weather in England show that between April and November 1815 , the average temperature had fallen 4.50F . During the next twenty - four months , England suffered one of the coldest periods of its history. Farmers’ records from April 1815 to December 1818 indicate frost throughout the spring and summer and sharp decreases in crop and livestock markets . Since there was a time lag of several years between cause and effect, by the time the world agricultural commodity community had deteriorated, no one realized the cause.
Ecologists today warn that we face a twofold menace. The everpresent possibility of volcanic eruptions, such as that of Mt. St. Helens in Washington, added to man’s pollution of the atmosphere with oil, gas, coal, and other polluting subtances, may bring us increasingly coal weather.
1. It is believed that the earth gets colder when
A. volcanors erupt.
B. the earth is polluted by modern man.
C. the rays of the sun are turned into space.
D. all of the above.
2. The effects of Tombora’s eruption were
A. felt mainly in the Dutch East Indies.
B. of several days’ duration worldwide.
C. evidence of pollution’s cooling the earth.
D. immediately evident to the world’s scientists.
3. The cause of cold weather in England from 1815 to 1918 was
A. decreased crope and livestock production.
B. volcanic ash in the atmosphere.
C. pollution caused by the Industrial Revolution.
D. its proximity to the North sea.
4. No one realised the cause of deterioration of the world agricultural commodity market because
A. there was a long delay between cause and effect.
B. the weather is beyond our comprehension.
C. weather forecasts were inaccurate.
D. ecologists did not exist until modern time.
5. If, as some scientists predict, the world ends in ice, what might be the cause?
A. modern man’s pollution of the air.
B. volcanic eruptions
C. obliteration of solar radiation.
D. all of the above.
