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    精英家教网 > 高中英语 > 题目详情
    Warm­blooded animals live an active life even in freezing winter，which helps them to ________ their normal body temperature.
    A．keep upB．build upC．bring upD．pick up
    A
    短语辨析。A. 保持；继续 B.增进  C.提出；教育    D.捡起。句意：温血动物甚至在寒冷的冬天也能生活的很活跃，这就保持了他们正常的体温。故选A。
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