The police went out of their way to investigate the explosion case, but there were no indications that standard security arrange

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问题 The police went out of their way to investigate the explosion case, but there were no indications that standard security arrangements were______.

选项 A、at hand
B、in fault
C、in question
D、in effect

答案B

解析 A项at hand“在附近”;B项in fault“有过错”;C项in question“正被讨论”;D项in effect“有效”。句意:警察在调查这起爆炸案时费了很大力气,但并没有迹象表明日常安全部署出了问题。B项最符合题意。
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