What's the red star in the sky through a telescope?It is Mars．Do you want to know more about it?Take the Mars Orbit Express ! Mars Orbit Express is a space probe ．It was sent towards Mars by America 题目和参考答案——青夏教育精英家教网—

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10．What's the red star in the sky through a telescope（望远镜）？It is Mars．Do you want to know more about it？Take the"Mars Orbit Express"!
"Mars Orbit Express"is a space probe （探测器）．It was sent towards Mars by American scientists on August 12th，2005．Its tasks are to study Mars'atmosphere and return photos to Earth．But before that"Mars Orbit Express"must travel about 100hundred million kilometers and seven months．It reached Mars'orbit（轨道）in March，2006．
Mars and Earth have similar weight and size．However，Mars is closer to the sun than Earth．Mars is very cold．The average temperature is below 50℃．The temperature at noon only reaches 20℃during a Mars day．Its atmosphere is mostly CO2．It has much sand and two moons---Phobos and Deimos．
Scientists think Earth and Mars had similar beginnings 4.6billion years ago．But while Earth supports millions of lives，Mars becomes bad．"Earth easily could have turned out like that．"said an scientist，"It is important for us to find out why and Mars Orbit Express'should do that．""Mars Orbit Express"also would help scientists to learn what might happen to Earth in the future．"Mars Orbit Express"would work for about four years．

38．What can you see through a telescope when watching Mars？B．
A．Much sand           B．A red star         C．Its atmosphere         D．Its size
39．One of the tasks of Mars Orbit Express isA．
A．taking pictures of Mars
B．studying the weight of Mars
C．finding out distance between Earth and Mars
D．telling the time it takes to go from Earth to Mars
40．Compared with Earth，C．
A．Mars has a long history            B．Mars is big and heavy
C．Mars is close to the sun           D．Mars'atmosphere is mainly O2．
41．Which might be the proper title for the passage？B
A．Mars：differences from Earth      B．A probe：to learn more about Mars
C．Mars：change of temperature       D．A probe：to tell the future of Earth．

分析文章大意：这是一篇科普类阅读，主要介绍火星的情况．火星和地球有相似的重量和尺寸．火星更接近太阳，但是平均气温却低于50℃，大气主要是二氧化碳．为了帮助科学家了解火星，2005年火星轨道快车被派往火星，它是一个探测器，它将在火星工作四年左右．

解答 38．答案：B．细节理解题．根据第一段What's the red star in the sky through a telescope（望远镜）？It is Mars．通过望远镜看到天空中的红色星星是什么？它是火星．可知，通过望远镜看火星，它是一个红色的星星，选B．
39．答案：A．细节理解题．根据第二段第一行Its tasks are to study Mars'atmosphere and return photos to Earth．它的任务是研究火星大气层并把照片返回到地球．可知，火星快车轨道的任务之一是拍摄火星照片．选A．
40．答案：C．细节理解题．根据第三段However，Mars is closer to the sun than Earth然而，火星比地球更接近太阳，可知，与地球相比，火星更接近太阳，选C．
41．答案：B．标题猜测题．根据第一段It is Mars．Do you want to know more about it？它是火星，你想知道关于它的更多信息吗？可知，短文主要介绍通过发送探测器更多的了解火星．可知，题目应该是"探索：更多了解火星"，选B．

点评阅读题型，要注重句子与句子之间、段落与段落之间逻辑关系以及对篇章的整体理解．根据所给问题选择正确选项完成试题．

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