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    【题目】今年4月，雅安地震给人们带来巨大的灾难．下列有关地震的说法正确的是（　　）

    A. 地震时由于板块的碰撞或张裂引起的

    B. 地震只能造成房屋倒塌、人员伤亡

    C. 地震发生时，应迅速到房屋内躲避

    D. 我国已经能够准确预报地震

    【答案】A

    【解析】

    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。

    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。雅安地震是由印度洋板块与亚欧板块碰撞或张裂引起的，地震会造成房屋倒塌、人员伤亡，且能够在很短的时间内改变地表的形态。现在人类还不能够准确预报地震，当地震发生时，不要惊慌，要就近躲在课桌下面，并用书包护住头部，千万不要恐惧，更不能从窗户跳下。赶快跑到开阔的地方，远离建筑物。地震中不应乘车逃命，远离交通工具。发生地震时应远离建筑物、危险品，就近采取防护措施，更不能躲进防空洞。故选A。

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