[求助]

大全896

    Unlike other arachnids, which have their nerve cells evenly distributed along their bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s.

(A) bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s

(B) bodies, the scorpion’s head had a cluster of nerve cells, as a mammal does

(C) body, the scorpion has a cluster of nerve cells in its head, as a mammal does

(D) body, nerve cells are clustered in the scorpion’s head, like a mammal’s（C）

(E) body, a cluster of nerve cells is in the scorpion’s head, like a mammal’s

答案选c,但是为什么body不用复数呢?

以前有过讨论:

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=18132