【題目】I'm afraid that Rare Earth(稀土) will if we continue to waste it.
A.run out
B.break out
C.come down
D.fall down

【答案】A
【解析】句意:如果我們將繼續(xù)使用,恐怕稀土將用完了。A. run out用完;B. break out爆發(fā); C. come down下來(lái),下落;D. fall down跌倒。根據(jù)句意故選A。

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