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New computers are soon out of date since newer models are ________ constantly.
A.turned up B.turned out
C.turned down D.turned over
B
选B 考查动词短语辨析。句意:由于更加新型的电脑不断地被生产,新电脑很快就会过时。turn up“出现”;turn down“拒绝”;turn over“翻身,翻转”。turn out为及物动词短语,意为“生产或制造”。newer models与turn out为被动关系,故需用被动语态。本题易误选A项,但turn up作“appear(出现)”讲时为不及物动词短语,没有被动语态。
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