We can scarcely afford to neglect airport security in light of the recent terrorist actions, but as a reliable contingent of cri

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问题 We can scarcely afford to neglect airport security in light of the recent terrorist actions, but as a reliable contingent of critics has pointed out, the cost of actually implementing these measures remains a______expense.

选项 A、feasible
B、prohibitive
C、suitable
D、negligible
E、mandatory

答案B

解析
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