The atmosphere ________ the earth．
The atmosphere ________ the earth．
A.surrounds
B.is surrounding
C.has surrounded
D.has been surrounding
A.surrounds
B.is surrounding
C.has surrounded
D.has been surrounding
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答案A
这句句子的意思是“大气层包围地球.”客观真理一般用一般现在时表示,如：
The sun rises in the east．
Water boils at 100 degrees centigrade．
这句句子的意思是“大气层包围地球.”客观真理一般用一般现在时表示,如：
The sun rises in the east．
Water boils at 100 degrees centigrade．
1年前
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