活动范围最大的关节是
A．滑车关节
B．球窝关节
C．枢轴关节
D．纤维性关节
E．软骨性关节
参考答案：B
It sounded like something was wrong with the car’s engine then, ______ they would have carried on their journey.
A．otherwise
B．therefore
C．meanwhile
D．besides
简述防呆法的原理。
