牙体切割最少的肩台是
A．135°肩台 B．带斜面90°肩台 C．刃状边缘 D．90°肩台 E．深凹形
参考答案：C
It was still _____ range of my gun, _____ I didn't want to shoot at it any longer. [ ]
A. out of; but
B. beyond; however
C. within; but
D. on; so
