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A light sleeper is usually very ______ to any sound even as inaudible as the hum
A light sleeper is usually very ______ to any sound even as inaudible as the hum
游客
2025-05-08
7
管理
问题
A light sleeper is usually very ______ to any sound even as inaudible as the humming of a mosquito.
选项
A、acute
B、keen
C、alert
D、immune
答案
C
解析
alert机警的,机敏的,be alert to为固定短语,对…很警觉。acute与keen都有“敏锐”之意(如目光、思维等)。immune免疫的。
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