Question

【题目】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

Answer 1

【答案】A

【解析】句意：如果我们将继续使用，恐怕稀土将用完了。A. run out用完；B. break out爆发； C. come down下来，下落；D. fall down跌倒。根据句意故选A。