题目内容

I took it for _____ that you wouldn't come here again.

A. grand
B. tame
C. granted
D. thumb

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He was sent to London on a special _____.

A. missing
B. missile
C. mission
D. mistress

碳酸盐岩首先可按成分划分为( )和( )两种基本类型

碳酸盐岩主要化学成分有:

石灰岩成分为70%,白云石为30%,该碳酸盐岩的成分命名为( )

A. 白云质石灰岩
B. 含白云质石灰岩
C. 灰质白云岩
D. 含灰质白云岩

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