_______________________________________________________
_______________________________________________________
Ⅱ.根据短文内容选择最佳答案
1.What makes the scientists plan to move Earth?
A.A few comets are moving to the direction of Earth.
B.Earth's working life is coming to an end soon.
C.Earth will become too hot for mankind to keep alive.
D.The moon is moving farther and farther away from Earth.
2.If the plan is successful,Earth will have a working life of ________years.
A.12 billionB.6 billion
C.18 billion D.24 billion
3.What serious problems might the plan cause according to the passage?
A.The comet might hit Earth and man might lose the moon.
B.Earth might be moved too far away and man might be frozen to death.
C.The comet might hit Jupiter or Saturn and never return to Earth.
D.Earth's working life might be greatly shortened.
4.What does the underlined word “compromise” mean?
A.provide
B.benefit
C.share
D.endanger
5.Which of the following best shows how the plan would work?
1.解析:“廉价商品如今在社会上随处可见,非常普遍”。
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