大学英语大学英语大学英语四级(CET4)2006年6月24日大学英语新四级(CET-4)真题试卷
题目内容

Undocumented workers became the target of “Operation Safe Travel” because ________.

2024-07-09

A.evidence was found that they were potential terrorists

B.most of them worked at airports under threat of terrorists

C.terrorists might take advantage of their illegal status

D.they were reportedly helping hide terrorists around the airport

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