New computers are soon out of date since newer models are ________ constantly.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
選B　考查動(dòng)詞短語(yǔ)辨析。句意：由于更加新型的電腦不斷地被生產(chǎn)，新電腦很快就會(huì)過(guò)時(shí)。turn up“出現(xiàn)”；turn down“拒絕”；turn over“翻身，翻轉(zhuǎn)”。turn out為及物動(dòng)詞短語(yǔ)，意為“生產(chǎn)或制造”。newer models與turn out為被動(dòng)關(guān)系，故需用被動(dòng)語(yǔ)態(tài)。本題易誤選A項(xiàng)，但turn up作“appear(出現(xiàn))”講時(shí)為不及物動(dòng)詞短語(yǔ)，沒(méi)有被動(dòng)語(yǔ)態(tài)。
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