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        1. 【題目】My father ________ in a panda protection center for ten years, so he knows a lot about pandas.

          A.was workingB.is workingC.has worked

          【答案】C

          【解析】

          句意:我爸爸在熊貓保護中心工作了十年,所以他對熊貓很了解。

          考查時態(tài)。was working過去進行時;is working現(xiàn)在進行時;has worked現(xiàn)在完成時;根據(jù)“for ten years”可知是用現(xiàn)在完成時,故選C

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