腕关节屈曲的正常活动值为()。
A.0°~70°
B.0°~80°
C.0°~90°
D.0°~100°
E.0°~110°
参考答案:C
下列常见的现象中,一定发生化学变化的是( )
A.粉笔折断
B.湿衣服晾干
C.食物腐烂
D.木材制成桌椅
Why not change to CCTV-2? There is________ on. [ ]
A. important something
B. important anything
C. something important
D. anything important