成人维生素D缺乏可引起（）
A.佝偻病
B.坏血病
C.骨质软化症
D.眼干燥症
E.癞皮病
参考答案：C
—Hi, Vince, can you come to my party?
—________ , I have too much homework to do. I'm so busy. [ ]
A. I'm sorry
B. That's too bad
C. I'd love to
D. Good idea
如何规划做好农村流动书库建设工作。
