这题为啥没人选D呀?我觉得D满对称的啊 by doing instead of by doing,看了半天谁来个定论啊,到底选什么?A/E/D的都有了,不过个人觉得E读起来好怪by drawing their body heat directly from the Sun instead of body heat generated by burning calories = their body heat directly by drawing from the Sun instead of body heat generated by burning calories ,其中出现了两次body heat ,不符合GMAT语法简洁的精髓啊,其次,第一个body heat 有所有格their,说明了属性,第2个确没,也没定冠词,总觉得怪,请求斑竹赐教