求问prep12的一道比较级题目

Chance小喵 · 发表于 2019-2-10 11:38:13

Laboratory rats and mice live up to 40 percent longer than usual when fed a diet of at least 30 percent fewer calories than that which they would normally eat, but that otherwise contains all necessary vitamins and nutrients.

这里正确答案是 that has at least 30 percent fewer calories than they would normally eat but that otherwise

prep笔记解释说原句的that想指代卡路里但因为是单数形式所以错误。
那如果把原句的that which改成those which的话对吗？

这种比较宾语的句子有哪些成分是可以省略的呢？
以及如果是 a diet of calories 这种介宾形式比较的话和宾语比较级有什么不同呢？

跪求大佬解答~~~

Eve001 · 发表于 2019-2-26 10:49:52

改成those which也是错的，曼哈顿语法里说，
Past GMAT questions have required that any new copy that or those agree in number with the previous version. If you must change number, repeat the noun:
Right： Her COMPANY is outperforming that of her competitor.
Wrong: Her COMPANY is outperforming those of her competitors.
Right: Her COMPANY is outperforming the companies of her competitors.

这里同理，前面的名词是a diet, 后面是they would normally eat, 单复数不一致，不能用those.
这里不能用a diet of calories, 因为后面两个从句都是修饰diet的， calories不能包含all necessary vitamins and nutrients.

求问prep12的一道比较级题目

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