金属烤瓷冠舌侧龈边缘最好为()
A.1mm肩台
B.0.5mm凹形
C.刃状
D.1.5mm
参考答案:B
— Have you _____ heard the story?
— No, not _____. [ ]
A. ever; yet
B. already; ever
C. with; with
D. about; with
第一个来东方大陆进行传教的人是()。
A、郭居静
B、利玛窦
C、汤若望
D、沙勿略