（1） ＧWD-25-Q17Until[CH1] recently, the Inuit people led a nomadicexistence, sheltering inigloos, the ice-block domes that are peculiar to north-central Canada,and in structures made of stones, bones, driftwood, and skins. A. Untilrecently [CH2] ,the Inuit people led a nomadic existence, sheltering B. Duringrecent times, the Inuit people lead a nomadic existence, sheltering. C. In thetimes that are recent, the Inuit people led a nomadic existence, sheltered. D. Upuntil [CH3] recently, the Inuit people, leading a nomadic existence, have sheltered. E. Untilrecent times, leading a nomadic existence, the Inuit people were sheltered.
[CH1]conj.(=up to the time when) 到... 时为止；prep.（介词）Up to the time of；Before (a specified time):用在否定句
[CH3]until 已经包含了up 的意思，D 是不对的。
ＣＥ已经排除了，求大牛解释其他三个选项～～～
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发表于 2013-6-8 23:33:39
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