Bell invented the telephone by trying manytimesand learning from his mistakes．题目和参考答案——青夏教育精英家教网—

题目内容

18．Bell invented the telephone by trying manytimes（time）and learning from his mistakes．

分析贝尔通过尝试很多次并从错误中学习，发明了电话．

解答答案：times
联系语境，根据关键词many可知其后应该跟可数名词的复数形式；结合提示词time在此句的意思为"次数"，为可数名词，所以空处应该用其复数形式times，many times指许多次，这里是指贝尔在发明电话的过程中尝试了很多次．故填：times

点评此题考查名词的单复数的变化．做题时根据关键词的提示结合句意确定出名词的单复数做出相应的变化即可．

练习册系列答案

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-In an hour．（　　）

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