导致肾衰竭患者发生纤维囊性骨炎的病因是
A．骨化三醇缺乏
B．代谢性酸中毒
C．营养不良
D．继发性甲状旁腺功能亢进
E．铝中毒
参考答案：D
If you _______that kind of fish, you ________very sick.
A．will eat; will become
B．will eat; become
C．eat; become
D．eat; will become
计算机网络的功能主要是信息交换、（）和分布式计算。
A.数据共享
B.资源共享
C.硬件共享
D.软件共享
