________,AlexanderGrahamBellwasstil

发布时间:2020-07-26 01:16:48

________, Alexander Graham Bell was still a young man.A.He invented the telephoneB.The telephone was inventedC.His invention of the telephoneD.When he invented the telephone

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D解析D项无论在语法上还是句意上均正确,若选A和B项,则缺少连词and,而C项是一个名词短语,也不符合要求。
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