资料题:Future explorations will( )。
A.be more difficult than it was in the past
B.cover a larger area than any exploring has done before
C.be more dangerous than in the past
D.be more lonely than in the past
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- 1If the land area of the earth is about 55 , 000, 000 square miles, the area that can be explored in space is probably( )。
A.70, 000, 000 square miles
B.13,720,000 6quare miles
C.550,000,000 square miles
D.55 ,000,000 square miles
开始考试点击查看答案 - 2Man will probably explore( )。
A.all the land in space
B.areas on which spaceships can land
C.only the largest planets and moons
D.only a few of the large planets
开始考试点击查看答案 - 3The writer thinks that this area will be explored( )。
A.in the beginning of the next century
B.at the end of the next century
C.at the end of the twentieth century
D.in the far-distant future
开始考试点击查看答案 - 4The writer thinks that modern explorers( )。
A.may be terrified
B.must conquer their fears
C.have nothing to be afraid of in space
D.both A and B
开始考试点击查看答案