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    【题目】喜马拉雅山脉是世界上最高大的山脉，至今它还在不断升高的原因是

    A.亚欧板块和印度洋板块不断张裂B.印度洋板块不断挤压亚欧板块

    C.非洲板块和印度洋板块不断张裂D.非洲板块不断挤压印度洋板块

    【答案】B

    【解析】

    根据地质学家经过长期研究，又提出了板块构造学说。板块构造学说认为，地球岩石圈是由板块拼合而成的。全球主要有六大板块，其中太平洋板块几乎全部是海洋，其余板块既包括大陆，又包括海洋。海洋与陆地的相对位置是不断变化的，进行分析解答。

    一般来说，板块的内部比较稳定，板块与板块交界的地带，有的张裂拉伸，有的碰撞挤压，地壳比较活跃；喜马拉雅山位于印度洋板块与亚欧板块的交界地带，印度洋板块不断挤压亚欧板块，致使喜马拉雅山脉不断升高。故选：B。

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