【題目】喜馬拉雅山脈是世界上最高大的山脈，至今它還在不斷升高的原因是

A.亞歐板塊和印度洋板塊不斷張裂B.印度洋板塊不斷擠壓亞歐板塊

C.非洲板塊和印度洋板塊不斷張裂D.非洲板塊不斷擠壓印度洋板塊

【答案】B

【解析】

根據(jù)地質(zhì)學(xué)家經(jīng)過長期研究，又提出了板塊構(gòu)造學(xué)說。板塊構(gòu)造學(xué)說認(rèn)為，地球巖石圈是由板塊拼合而成的。全球主要有六大板塊，其中太平洋板塊幾乎全部是海洋，其余板塊既包括大陸，又包括海洋。海洋與陸地的相對位置是不斷變化的，進(jìn)行分析解答。

一般來說，板塊的內(nèi)部比較穩(wěn)定，板塊與板塊交界的地帶，有的張裂拉伸，有的碰撞擠壓，地殼比較活躍；喜馬拉雅山位于印度洋板塊與亞歐板塊的交界地帶，印度洋板塊不斷擠壓亞歐板塊，致使喜馬拉雅山脈不斷升高。故選：B。

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