题目

东北的大小兴安岭由于气候寒冷,其植被类型主要是(    ) A.温带落叶阔叶林          B.亚热带常绿阔叶林 C.针叶林和针阔混交林     D.热带季雨林 答案:       CIt’s surprising that your brother ______ Russian so quickly---he hasn’t lived there very long.A. put up B. made up C. picked up D. set up
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