跟刀架由( )调整螺钉、支撑爪、螺钉、螺母等组成。
A．套筒
B．弹簧
C．顶尖
D．架体
参考答案：D
钢轨端面的钭度轨头部分不应大于（）。
A、0.50mm
B、1.0mm
C、1.5mm
D、2.0mm
— How are the things in your village?
— Modern farming methods have been brought in and the villagers are ______ now than before.
A．well off
B．better off
C．badly off
D．worse off
