半解剖式人工牙的牙尖斜度是()。
A.10°
B.15°
C.20°
D.25°
E.30°
参考答案:C
If you have any trouble________the work within the time, please tell me. [ ]
A. to finish
B. finish
C. with finishing
D. finishing
传统的文本都是线性的,而 【2】 是非线性的。