请帮我看看这道abc选项的差别！

斯巴达

GWD-12-Q28:
Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal’s than a cold-blooded reptile’s.

A.    that many species of dinosaur had a metabolism more like
B.    that the metabolism of many dinosaur species were more like
C.    that the metabolisms of many species of dinosaurs were more like those of
D.    there were many species of dinosaurs that had metabolisms more like those of
E.    there were many dinosaur species that had a metabolism more like that of

ruimiss

答案是A吧？
首先确定一点，比较对象是（不同动物的）metabolism。
B的错误是主谓不一致，metabolism是单数，后面应该对应was而不是were
C  metabolisms of many species of dinosaurs 这里不觉得很怪很复杂么，一般不这么赘述。不过主要错误时后面的a warm-blooded mammal’s，a cold-blooded reptile’s这里用所有格，意思就是指这两种动物的metabolism，因而不用再加those of，重复了，指代反而混乱了。

斯巴达

多谢！