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The journey to the moon has been the fir...

The journey to the moon has been the first step towards future exploration(探险) in space. The distance between the Moon and the Earth is very short indeed when compared with the distances between the Earth and other planets. Mars, the nearest planet to Earth is millions of miles away! Traveling to the planets will be man’s next aim. Such travels will be more difficult than the trip to the moon and certainly more adventurous(冒险).

Recently, two American spaceships, Virkings 1 and 2, landed on Mars, trying to discover whether that planet has any life on it. So far the signs of life on Mars has neither confirmed(确认) nor ruled out. Russians have discovered that the surface of Venus is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus(金星) is very dense(稠) and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere.

Scientists believe man may find planets which have the same conditions as those we have on the Earth, but man should realize the Earth will be his only home for a long time and begin to love and care for it.

1.According to the passage, traveling to the planets will be ________.

A. much easier and even more interesting

B. for more exciting and dangerous

C. man’s final aim

D. man’s first aim

2.Which of the following is not true?

A. Mars is nearer to the earth than the moon.

B. The moon is much nearer to the earth than Mars.

C. Of all the planets, Mars is the nearest to the earth.

D. All the planets are much farther to the earth than the moon.

3. From the passage, we can guess _______.

A. there is life on Mars

B. there is no life on Mars

C. the atmosphere of Mars is not so dense as that of Venus

D. scientists will have little hope to find the answers

4. Man can live on under the conditions of _______.

A. much too hot surface

B. the same pressure as we get on the earth

C. normal atmosphere as we have on the earth

D. Both B and C

5.Scientists think we should take care of our earth because _______.

A. no other planets are to take the place of the earth

B. everything needed is provided by the earth

C. the only home of man will be the earth for a long time

D. the dream to find another home for man will come true

 

1.B 2.A 3.C 4.D 5.C 【解析】 试题分析:这篇短文主要讲述了人类已经登上月球但是还不能找到能代替地球的行星,所有我们人类要保护地球。 1.B细节理解题。根据文中可知人类已登上了月球,下一个目标就是向其他行星进军。但这种探险会比月球上的探险更激动人心,也更具危险性,所以选B。 2.A推理判断题。Mars是离地球最近的一颗行星,但与月球相比,Mars离地球就远得多了。故A是不正确的。 3.C细节理解题。火星上是否有生命到现在为止还无定论,因此,A、B均与文章不符。科学家们得出金星上无生命的结论,所以D项也是错误的。故选C。 4.D细节理解题。人在太高温度的表层是无法生存的,但情况与地球相似时,人就可以生存。故选D。 5. 考点:科技类短文阅读
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