—Where are you going for your holidays this summer?

--Well,it’s not been decided.I______go to the countryside to see my parents.

A．might

B．need

C．can

D．must

下列哪项对哮与喘鉴别诊断无意义（）。

A.有无宿根

B.喉中有无水鸡声

C.哮必兼喘

D.喘未必兼哮

E.呼吸急促