His ears are highly sensitive ______ any unusual sound in the machine.

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问题 His ears are highly sensitive ______ any unusual sound in the machine.

选项 A、of
B、on
C、to
D、by

答案C

解析本题考查的是固定搭配中介词的用法。be sensitive to表示“对……敏感”。

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成人本科学位英语

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