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        1. 【題目】The 70th anniversary of the founding of the PRC was celebrated 1st October, 2019.

          A.atB.inC.onD.for

          【答案】C

          【解析】

          句意:2019101日是中華人民共和國(guó)成立70周年紀(jì)念日。

          考查介詞辨析。at在,后跟時(shí)刻;in 后跟年,月等不具體的時(shí)間;on后跟具體時(shí)間,需要具體到某一天;for后跟一段時(shí)間,表示持續(xù)一段時(shí)間,是完成時(shí)的標(biāo)志。1st October, 2019為具體到天的時(shí)間,故選C。

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