金瓷冠切端牙体磨除厚度一般为()
A.1.5mm
B.1.0mm
C. 2.0mm
D.0.5mm
E.3.0mm
参考答案:C
They were standing so far away that I couldn’t_____ their faces clearly.
A.make out
B.make for
C.make off
D.make up
农产品质量安全例行监测由目前的()个城市扩展到全国所有大中城市。
A.30
B.35
C.37
D.40