________ it is, the boy never seems to be able to finish it off.

A．However interesting a book

B．Whatever interesting a book

C．How interesting a book

D．What an interesting book

康复医学主要的服务对象不是（）

A.各种疾病患者

B.残疾者

C.老年人

D.慢性病患者

E.疾病或损伤急性期及恢复早期的患者