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The tourist is prevented from entering a country if he does not have ______ pass
The tourist is prevented from entering a country if he does not have ______ pass
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2025-03-20
31
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问题
The tourist is prevented from entering a country if he does not have ______ passport.
选项
A、an operative
B、a valid
C、an efficient
D、an effective
答案
B
解析
valid意思是“(在法律上)有效的”,如:a ticket valid for a week“有效期一周的票”,a ticket valid for one single journey“单程有效票”。A项operative意思是“施行的,产生效果的”,如:The new regulations became operative on Oct.1.“新规章制度10月1日起施行。”C项中efficient的含义是“效率高的”,用于人指有能力,能胜任工作,用于物,指省时省力能产生好效果,如:The new machine is more efficient than theold one.“新机器比旧的效率高。”D项中effective意为“有效的”,指能产生所期待的效果,如:the medicine effective against cancer“抗癌药物”,effective有时与operative同义,如A中的例句也可用effective替换。虽然这四个词均有“有效的”意思,但其深层含义和用法却不相同,应注意加以区别。本句中passport(护照)是指法律上认可,可以进出某一国家的有效身份证明,因此应选B。
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