The collapse of the World Trade Center has put US economy in a difficult . A. oc
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The collapse of the World Trade Center has put US economy in adifficult ________.
A. occasion
B. case
C. situation
D. background
试题答案
答案：C
解析：| 全句意为“世贸中心的倒塌使美国经济处于困难的境地”。
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