Prep SC1 20 求助

The hognose snake puts on an impressive bluff,
hissing and rearing back, broadens the flesh behind its head the way a cobra
does, feigning repeated strikes, but, having no dangerous fangs and no venom,
eventually, if its pursuer is not cowed by the performance, will fall over and
play dead.

(A) broadens the flesh behind its head the way a
cobra does, feigning repeated strikes, but, having no dangerous fangs and no
venom,

(B) broadens the flesh behind its head the way a
cobra does and feigns repeated strikes, but with no dangerous fangs and no
venom,

(C) broadening the flesh behind its head the way a
cobra does and feigning repeated strikes, but it has no dangerous fangs and no
venom, and

(D) broadening the flesh behind its head the way a
cobra does and feigns repeated strikes, but with no dangerous fangs and no
venom, and

(E) broadening the flesh behind its head the way a
cobra does, feigning repeated strikes, but with no dangerous fangs and no
venom, and

答案是C

主要原因是分词并列。

我的问题是，划线的前面部分hissing and rearing back，已经有了and了，为什么后面可以跟一个没有and的分词？

谢谢。

举个例子：Kids played on the ground, coming and going, running and jumping...

是两个平行的相生状态。