可能出现骨折专有体征的骨折是（）

A.青枝骨折

B.裂缝骨折

C.螺旋骨折

D.嵌插骨折

E.椎体压缩骨折

---What do you think is the matter with your car?

---Well, it _____ start at all. I mean I turned the key and nothing happened.

A．shan’t

B．won’t

C．mustn’t

D．shouldn’t