2. 外语
  3. Rescue workers continued the delicate task of sifting through tons of concrete and ______ to try to reach possible survivors.

Rescue workers continued the delicate task of sifting through tons of concrete and ______ to try to reach possible survivors.

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问题 Rescue workers continued the delicate task of sifting through tons of concrete and ______ to try to reach possible survivors.
选项 A、scraps
B、leftovers
C、debris
D、residues
答案C
解析 scrap小片，废料；leftover剩余物；debris碎片，残骸；residue残余，渣滓。
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