The question whether there is life on Mars (火星) has made the public think a lot for more t

The question whether there is life on Mars (火星) has made the public think a lot for more than a century. The closest look showed Mars to be a dusty, cold world, covered by air too thin to breathe. A British spaceship and Europe's Mars spaceship plan to land on Mars or enter orbit (轨道) around it. One of the NASA’s (美国宇航局) spaceships is expected to land on January 3, the other is going to land on the opposite side of Mars on January 24. Since 1960, over twenty spaceships sent to Mars have failed. Most have been lost on flying up or landing because those are the most difficult times of any flights. Scientists wanted to find out whether there was water in Mars. In October, a team of scientists reported that Mars had been a dry wasteland. But weeks later, a second team reported differently that they had found some marks showed clearly that they were made by the rivers. Such marks told us that Mars was a warmer place billions of years ago — just as life first appeared here on Earth. Scientists at once raise a question: if what they said is true, what happened on Mars? Then what about the earth?
【小题1】Which is right about Mars?A．It’s cold without dust.B．There is no water or air.C．It’s warm with some thin air.D．It’s a dusty, cold world almost without air.【小题2】Two NASA’s spaceships .A．will land on the different sides of MarsB．will land on the same dayC．will enter orbit around MarsD．will land with a man【小题3】The most difficult times of a flight are .A．taking offB．flying up and arrivingC．entering the orbit and landingD．leaving the earth and entering the orbit【小题4】A team of scientists reported that there might be in Mars.A．nothing but airB．nothingC．water billions of years agoD．thick air and lakes【小题5】What are scientists worried about when they raise the question?A．Life disappeared on Mars.B．Spaceships can’t land on Mars.C．The air on the earth gets less and less.D．The earth might be changed like MarsD

(答案→)D 解析：一个多世纪火星上是否有生命的问题让公众想了很多。最接近的发现表明，火星是一个尘土飞扬的，寒冷的世界，覆盖太薄的空气。一英国飞船和欧洲的火星飞船计划降落在火星或进入它周围的轨道。美国航空航天局的太空飞船，预计1月3日土地，另一种是在1月24日降落在火星的另一侧。自1960年以来，超过20飞船送往火星，都失败了。大部分已遗失或着陆飞不起来了。科学家们想找出在火星上是否有水。 10月，研究小组的科学家报告说，火星一直干荒地。但几周后，第二小组的报告，他们发现了一些痕迹清楚地表明，。这类标记告诉我们，火星数十亿年前一个温暖的地方，科学家们立刻提出了一个问题：如果他们说的是真实的，在火星上发生了什么事？那地球呢？【小题1】细节理解题，根据文中语句“The closest look showed Mars to be a dusty, cold world, covered by air too thin to breathe.”理解可知。火星上有尘土，寒冷和太薄的空气，故选D。【小题2】细节理解题，根据文中语句“One of the NASA’s (美国宇航局) spaceships is expected to land on January 3, the other is going to land on the opposite side of Mars on January 24.”理解可知。两艘宇宙飞船在不同的时间不同的地点着陆火星，故选A。【小题3】细节理解题，根据文中语句“Most have been lost on flying up or landing because those are the most difficult times of any flights.”理解可知。故选择B。【小题4】细节理解题，根据文中语句“a second team reported differently that they had found some marks showed clearly that they were made by the rivers.”理解可知。几十亿年以前，火星上有水资源，故选C。【小题5】细节理解题，根据文中语句“Scientists at once raise a question: if what they said is true, what happened on Mars? Then what about the earth?”理解可知。科学家们担心地球也会有同样的Mike命运，故选D。

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