单选题 The animates would charge no matter how badly wounded, and in their death struggles, bellowing and rolling from side to side, they seemed to refuse to die.

【正确答案】 C
【答案解析】[解析] 它们不想死。在给出的选项中，gasp：喘气；choke：窒息，堵塞；howl：咆哮，狂嗥；puff：喷出。只有C项符合题意，可以替换画线部分词语。因此本题答案为C。