桩核冠修复中,对所修复残冠的错误措置为()
A.沿龈 * * 顶连线切断
B.去除腐质
C.去除薄壁
D.去除无基釉
E.尽可能保留残冠硬组织
参考答案:A
Tomorrow is Saturday. We _________ to school. [ ]
A. will go
B. won't go
C. can go
D. went
在初中化学中,我们学习了一些物质的俗名和用途.请仿照示例完成下表: