2. 外语
  3. ________, glasses can correct most sight defects in healthy eyes.

________, glasses can correct most sight defects in healthy eyes.

admin2022-10-15  48
问题 ________, glasses can correct most sight defects in healthy eyes.
选项 A、When well-fitted
B、If are well-fitting
C、When well-fitting
D、If are well-fitted
答案A
解析 如果眼镜很合适，就能矫正健康眼睛中的大部分视力缺陷。语法题。当从句的主语与主句的主语相同，且从句的谓语动词含有be动词时，从句中可以省略主语及be动词。本句中的When well-fitted省略了主语和be动词，相当于时间状语从句When glasses are well-fitted，其中well-fitted表示“合适的”，所以A为答案。
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