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        1. The twin sisters have learned a lot ________ they came to China.

          A.when B.a(chǎn)fter
          C.since D.a(chǎn)s soon as

          C

          解析試題分析:句意為:這對孿生姐妹到中國以來學(xué)了很多東西。when:當(dāng)……時(shí)候,after:在……之后, since:自從……以來, as soon as:一……就……。根據(jù)語境,本句指的是過去某一動(dòng)作對現(xiàn)在造成的影響或結(jié)果!皊ince+一般過去時(shí)句子”表示從過去某段時(shí)間以來,故選C。
          考點(diǎn):考查連詞的用法。

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