题目内容
The earth moves round the sun, and the moon moves round the earth. When our part (部分) of the earth turns to the sun, it is day. When our part of the earth turns away from the sun, it is night.
The sun is much bigger than the moon. But sometimes the moon looks bigger than the sun, because it's much nearer to the earth.
The sun is very bright. It gives a very strong light. The moon looks quite bright, too. But it doesn't give any light at all.
The moon looks much bigger and brighter than the stars. But in fact the stars are much bigger and brighter than the moon. They look smaller than the moon because they're much farther away from us.
46. ________ moves round __________.
A. The earth, the moon B. The moon, the earth
C. The moon, the stars D. The sun, the earth
BCA
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Many of the world's pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further 1 by industry.
If the rapid increase of world 2 continues at the present rate, there may be much greater
3 to human beings.
Some scientists 4 of the increase in numbers of people as "population pollution''.
About 2,000 years ago, the world population was about 250 million. It 5 a billion in 1850. By 1930 the population was two billion. It is now six billon.
It is 6 to double by the year 2020. If the population 7 to grow at the same rate, there will be 25 billion people in the 8 a hundred years from now.
Man has been 9 the earth's resources more and more 10 over the past years. Some of them are almost gone.
Now many people believe that man's 11 problem is how to control the 12 of the population.
The material supplies in the world will be far from enough to 13 the human population if the present rate of increase continues.
There is already over-crowding in many cities and 14 in some countries. Many people believe that human survival in the future 15 on the answer to the question.
1.A. progress | B. pollution | C. education | D. production |
2.A. agriculture | B. industry | C. environment | D. population |
3.A. danger | B. harm | C. benefit | D. hardship |
4.A. dream | B. approve | C. rid | D. speak |
5.A. got | B. took | C. brought | D. reached |
6.A. suggested | B. hoped | C. expected | D. said |
7.A. continues | B. fails | C. tries | D. means |
8.A. world | B. country | C. star | D. end |
9.A. discovering | B. using | C. digging | D. destroying |
10.A. seriously | B. dangerously | C. rapidly | D. steadily |
11.A. greatest | B. easiest | C. lightest | D. simplest |
12.A. existence | B. start | C. growth | D. birth |
13.A. increase | B. starve | C. construct | D. support |
14.A. discussion | B. starvation | C. construction | D. argument |
15.A. depends | B. agrees | C. saves | D. passes |