--I’ve got a pain in my chest and a terrible headache.

--___________？   [ ]

A.What’s the matter                    

B.What is it        

C.Do you feel short of breath              

D.May I have a look

骨髓检查的禁忌证是（）

A.血友病

B.单纯性紫癜

C.恶性组织细胞病

D.白血病伴皮肤黏膜出血

E.原发性血小板减少性紫癜