Not only _____fond of singing and dancing, but also _____an interest in playing all kinds of

musical instruments.

 [      ]

A. is he; he has

B. is he; does he have

C. he is; does he have

D. he is ; he has

老视产生的原因是（）。

A.远视造成

B.角膜及晶状体曲率过小

C.睫状肌调节力过强

D.角膜及晶状体曲率过大

E.眼的调节功能下降