Scientists reported that more than 320 kinds of chemical components ______ in th

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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

解析译文：科学家们报告说，茶叶中含有超过320种的化学成分。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；此外本胚也考查被动结构，因此[A]正确。

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