The earth is one of the _______ pianets and it goes around the sun. A.sun B.suns C.suns' D.sun'sWith their help,man has known the ______(A.earth B.sun C.stars D.satellites) better than before and has done better _______(A.on B.in C.about D.with) many

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The earth is one of the _______ pianets and it goes around the sun. A.sun B.suns C.suns' D.sun'sWith their help,man has known the ______(A.earth B.sun C.stars D.satellites) better than before and has done better _______(A.on B.in C.about D.with) many
The earth is one of the _______ pianets and it goes around the sun. A.sun B.suns C.suns' D.sun's
With their help,man has known the ______(A.earth B.sun C.stars D.satellites) better than before and has done better _______(A.on B.in C.about D.with) many fields of science

The earth is one of the _______ pianets and it goes around the sun. A.sun B.suns C.suns' D.sun'sWith their help,man has known the ______(A.earth B.sun C.stars D.satellites) better than before and has done better _______(A.on B.in C.about D.with) many
选D.A.B.

D
D
B

答案:D, A, B。
解释:地球是太阳其中的一颗行星,这里要用名词的所有格形式,即:the sun's planets。第二空:根据上下文,判断这里应该是:the earth。第三空:在...领域,介词用in。
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