“Amysteriousillness,referredtoa

发布时间：2020-07-28 09:42:28

“A mysterious illness, referred to as ‘SARS’, has been brought under control, ”the government said Wednesday, “ ________ no cause of it has been made public.”A.whenB.thatC.thoughD.because

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C解析though引导一个让步状语从句，放在句末．
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