拔髓术操作不合要求的是
A.钻针方向与牙长轴平行
B.由较突出的髓角处穿孔进入髓腔
C.用球钻提拉式磨除髓顶
D.只要暴露根管口即可
E.以上都不对
参考答案:D
The order came that the medical supplies ______ to the village without delay.
A.would be sent
B.should send
C.be sent
D.must be sent
“二八定律”P171