Professor Lee is said ______another important discovery in physics.

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问题 Professor Lee is said ______another important discovery in physics.

选项 A、to make
B、having made
C、having been made
D、to have made

答案D

解析非谓语动词。此题考查的是be said被动语态后面用动词不定式，并且由句意判断应使用完成时。

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大学英语三级A级

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