此题答案是E, 但觉得很蹊跷 - instead of 不是永远不优先于 rather than 吗? B 为什么不行呢? 还是答案有问题?
15.Reptiles, by drawing their body heat directly from the Sun rather
than burning calories to generate it, can survive on ten percent
of the nourishment that a mammal of similar size would normally
require
A. rather than burning calories to generate it
B.rather than the generation of body heat by burning calories
C.and not from generating it by burning calories
Dinstead of by burning calories for generating it
E.instead of body heat generated by burning calories
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