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

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

admin2014-03-21  65
问题 ______, glasses can correct most sight defects in healthy eyes.
选项 A、When well fitted
B、Well fitted when
C、Well fitted if
D、If well fitted when
答案A
解析
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