有主胞胎作用的是( )
A．任脉B．督脉C．冲脉D．带脉
参考答案：A
Susan decided not to work on the program at home because she didn’t want her parents to know what she______ .
A．has done
B．was doing
C．had done
D．is doing
前伸髁导斜度为30°时，侧方髁导斜度应为（）。
A.5°
B.10°
C.15°
D.16°
E.24°
