Laboratory rats and mice live up to 40percent longer than usual when fed a diet of at least 30 percent fewercalories than that which they would normally eat, but that otherwise containsall necessary vitamins and nutrients. A. ofat least 30 percent fewer calories than that which they would normally eat, butthat otherwise B. with at least 30 percent fewer calories than what they would normallyeat though otherwise it C. that has at least 30 percent fewer of the calories that they wouldnormally eat, but otherwise it D. that has at least 30 percent fewer calories than they would normally eatbut that otherwise E. that has at least 30 percent fewer calories than that which they wouldnormally eat, though that otherwise
OA
疑问:1.D选项中能看懂平行,但是这个比较结构我不太懂“than they would normally eat ” 跟一句话比较?
2.给的解析中说B选项错误有这么一句话“ its referent is unclear (calories? diet?) ” its不是只能指代单数吗?为什么这里还会有指代calories的歧义?
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