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17、Venus has a dense atmosphere, _____ we know very little.                  

A. its composition                              B. whose composition

C. about which composition                D. about whose composition

 

17、D

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Venus has a dense atmosphere, _____ we know very little.                  

A. its composition                              B. whose composition

C. about which composition                D. about whose composition

 

查看答案和解析>>

科目:高中英语 来源: 题型:

Venus(金星) has a dense atmosphere, ______ we know very little.

    A. its composition                             B. about whose composition

 C. about which composition                          D. whose composition

查看答案和解析>>


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