Unit 1 When was it invented 分层培优练 鲁教版(五四学制)九年级英语全册（含解析）

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Unit 1 When was it invented ——九年级全一册鲁教版分层培优练
一、单项选择
1.There is no ________ in trying to persuade him to join us, for he enjoys being alone.
A.doubt B.wonder C.difficulty D.point
2.The telephone ________ by Alexander Graham Bell in 1876.
A.invent B.invented C.is invented D.was invented
3.The traditio...