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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1111

These problems, ________, will seriously affect the growth of teenagers and even the nation’s future.

A.not if solved properly B.if solved properly
C.if not solved properly D.not if properly solved
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Theseproblems,,willseriouslyaf