-Many school children in China are nearsighted(近視的).
-It will be a serious problem_____we do something to improve the situation.( ?。?/h1>
【考點】條件狀語從句.
【答案】D
【解答】
【點評】
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發(fā)布:2024/4/20 14:35:0組卷:4引用:3難度:0.7
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