腕横纹上5寸，掌长肌腱与桡侧腕屈肌腱之间为
A．殷门B．章门C．关门D．石门E．郄门
参考答案：E
-I'm sure Andrew will win the first prize in the final.
-I think so. He____for it for months. [ ]
A. is preparing
B. was preparing
C. had been preparing
D. has been preparing
下列各组气体中，在通常情况下既能用浓硫酸又能用碱石灰干燥的有（ ）
A．CO、O2、N2
B．HCl、Cl2、CO2
C．NH3、H2、CO
D．SO2、Cl2、O2
