Scientists reported that more than 320 kinds of chemical components______in the tea leaves.

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问题 Scientists reported that more than 320 kinds of chemical components______in the tea leaves.

选项 A、are contained
B、is contained
C、contains
D、contained

答案A

解析 主谓一致题。本题考查句子由more than…of作主语时,动词应与of后的名词或代词保持一致;此外本题也考查被动结构,因此A正确。
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