老年人发生腰背酸痛时在营养学上首先应考虑的疾病是()
A.骨质软化症
B.类风湿关节炎
C.更年期综合征
D.骨质疏松症
E.腰椎间盘突出
参考答案:D
改错。
( ) 1. They bring gifts to us. ____________
A B C
( ) 2. There are four season in a year. ____________
( ) 3. What a hot, sun day! ____________
( ) 4. I can skate at the ice. ____________
( ) 5. Everyone looks out for the window. ____________
给水由()、()和()组成。