---         is it from your home to your school?

---It is about twenty minutes by bike.

A．How far

B．How long

C．How many

D．How much

风寒犯肺证与风热犯肺证的共同特点是（）

A.咳嗽气喘

B.鼻流清涕

C.身痛无汗

D.咳痰稀白

E.咽喉肿痛