题目

对荒漠化的发展进程起决定性作用的是(    ) A.气候      B.人类活动    C.地形      D.河流 答案:B 解析: 据统计,在西北地区荒漠土地面积中,人类活动不当所引起的荒漠化面积占90%以上。—Would you mind telling me something about the two __________?—________. They are exchange students from Germany.A. Frenchmen; Of course B. Frenchmans; That’s all rightC. Germans; Not at all D. German; All right
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