Aluminium is the most plentiful metal in the Earth’s ______.

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问题 Aluminium is the most plentiful metal in the Earth’s ______.

选项 A、surface
B、crust
C、outside
D、cap

答案B

解析 易混词辨析。本题最强干扰项是A。surface和crust容易混淆,surface表面,而crust外壳,尤指地球外壳,故依题意选B。
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