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        1. 【題目】It has been 3 months________ we had winter vacation.

          A.whenB.whileC.sinceD.though

          【答案】C

          【解析】

          句意:自從我們度過(guò)寒假以來(lái),已經(jīng)有3個(gè)月了。

          考查連詞。when什么時(shí)候,何時(shí),引導(dǎo)時(shí)間狀語(yǔ)從句;while期間,當(dāng)的時(shí)候,引導(dǎo)時(shí)間狀語(yǔ)從句;since自從,引導(dǎo)時(shí)間狀語(yǔ)從句;though雖然,盡管,即使,引導(dǎo)讓步狀語(yǔ)從句。根據(jù)“It is (has been)+時(shí)間段+since+從句是固定句型。結(jié)合句意和句型結(jié)構(gòu)可知,此空應(yīng)填since,故選C。

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