______ glasses can correct most sight defects in healthy eyes.A.When well fittedB.Well fi

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

A.When well fitted

B.Well fitted when

C.Well fitted if

D.If well fitted when

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。