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题库 / Prep2012-SC-69
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.
of at least 30 percent fewer calories than that which they would normally eat, but that otherwise
with at least 30 percent fewer calories than what they would normally eat though otherwise it
that has at least 30 percent fewer of the calories that they would normally eat, but otherwise it
that has at least 30 percent fewer calories than they would normally eat but that otherwise
that has at least 30 percent fewer calories than that which they would normally eat, though that otherwise
题目分析：
首先，具有fewer calories than关系的两者应该是a diet和a diet that they would normally eat，所以than后需要写出比较的对象（时态或情态等任何的不同均不能省略），即they would normally eat，可以排除(A)(B)(E)。其次，在本题中，具有转折关系的两者是“卡路里比以前吃的饭少了30%（at least 30 percent fewer calories than they would normally）”和“所有的营养以及维他命是一样的（contains all necessary vitamins and nutrients）”，即，这个diet中，虽然某些“坏东西”少了，但是“好东西”没有什么变化，因此has at least 30 percent应该和contains all necessary vitamins and nutrients平行，可以排除(C)，答案为(D)。
选项分析：
略
除此之外，A、E选项中的that和which连用是否有语法错误啊？
that是代词，which引导定语从句，单看这个，没什么问题。
那A选项不就是a diet和a diet的比较吗？
that（代词，指代的前文的a diet） which they would normally eat（一个定语从句）
真正应该比较的是卡路里的含量，而不是餐食。
老师，this these that those貌似需要后面跟着他指代得对象才能够进行指代的的吧。这是否也是问题？
老师，this these that those貌似需要后面跟着他指代得对象才能够进行指代的的吧。这是否也是问题？
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