【題目】Paper and printing ________ in China.

A. were both invented B. was invented C. are both invented D. is invented

【答案】A

【解析】句意:造紙術(shù)和印刷術(shù)兩者都是在中國被發(fā)明的。both表示兩者都,位于be動詞之后,實義動詞之前。主語Paper and printing是復(fù)數(shù),謂語用復(fù)數(shù)形式。結(jié)合句意,此處表示造紙術(shù)和印刷術(shù)過去被發(fā)明,故用被動語態(tài),故選A。

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