The future existence of all the people in our world may very well depend upon our ability to terraform Mars.
本文是一篇科普说明文,介绍了一些星球的情况。
1.What would be the best title for this passage?
A.Terraforming Mars B.Saving the Earth
C.Travelling to Mars D.A NewlyFound Place
【解析】 本文主要围绕Terraforming的特点对Mars进行介绍说明。
【答案】 A
2.What does the underlined word “altering” mean in the second paragraph?
A.Warming. B.Changing.
C.Planting. D.Building.
【解析】 根据上下文的理解,对句子进行分析得知。
【答案】 B
3.According to the passage,the main purpose of terraforming Mars is to
.
A.do some scientific research work
B.find out its similarity to earth
C.avoid the dying away of many other species
D.find on Mars living place for the increasing human beings
【解析】 由第四段可知。
【答案】 D
4.The main reason for causing many people to consider terraforming Mars is that
.
A.there are some resemblances between Earth and Mars
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