题目内容
阅读理解
The journey to the moon had been the first step towards future exploration(探险) in space. The distance between the Moon and Earth is very short indeed when compared with the distances between Earth and the other planets. Mars, the nearest planet to Earth is millions of miles away! Travelling to the planets will be man’s next aim. Such travels will be more challenging than the trip to the moon and certainly more adventurous.
Recently, two American spaceships, Vikings 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 (金星) is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus is extremely dense (稠密的) 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 Earth, but man should realize 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.far more exciting and dangerous
C.man’s final aim
D.man’s first step
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;
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 earth
C.normal atmosphere as we have on 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
解析:
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1.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。 2.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.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。 4.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。 5.人类必须保护地球,其根本原因是人类在近期还无法找到能够代替地球的行星,所以地球在很长一段时间内将是人类赖以生存的惟一家园。 |
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