以下属于单轴关节的是
A.桡腕关节
B.拇指腕掌关节
C.髋关节
D.肩关节
E.指间关节
参考答案:E
下列反应的离子方程式中,正确的是( )
A.澄清的石灰水与醋酸溶液反应:Ca(OH)2+2H+=Ca2++2H2O
B.CuO与盐酸反应:CuO+2H+═Cu2++H2O
C.H2SO4溶液中滴入Ba(OH)2溶液:Ba2++OH-+H++SO42-=BaSO4↓+H2O
D.铁钉投入稀盐酸中:Fe+2H+=Fe3++H2↑
I see you_____ basketball almost every day.
A. play B. to play C. playing