The human growth hormone, made by the pituitary gland, is secreted during sleep in higher concentrations than when awake.
(A) during sleep in higher concentrations than when awake (b) when sleeping in higher concentrations than waking hours. (c) in higher concentrations during sleeping than waking. (d) in higher concentrations during sleep than during waking hours. (e) in higher concentrations when asleep than when awake.
in higher concentrations 这个成分越靠近is secrected表达越清楚, 另外这样也是为了后面的比较做并列的准备. 比较than前后要并列,共同的部分in higher concentrations提前了可以不用重复, 但是介词不可省略(参考OG254). 因为sleep本身有名词,再用sleeping就显得没有必要. 从原文的意思来说,有一种持续的状态, during可以表达出这个意思,可是when表达的是瞬间. 综合以上原因,选D. 254. Balding is much more common among White males than males of other races. (A) than (B) than among (C) than is so of (D) compared to in comparison with
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发表于 2003-12-20 03:53:00
