后牙游离缺失的末端基牙上设计近中胎支托或采用应力中断式卡环的主要目的是
A. 减轻牙槽嵴负担
B. 增加义齿的强度
C. 增强义齿的固位
D. 防止基牙龋坏
E. 减小基牙上的扭力
适宜纸煨的药物是( )
A. 葛根
B. 木香
C. 肉豆蔻
D. 诃子
E. 以上都不是
中断是CPU对计算机系统发生某个事件时所做出的反应，而引起中断的事件被称为 ( )。
A. 中断处理
B. 中断源
C. 中断响应
D. 中断屏蔽
According to Paragraph 4, we can see that the author believes that ______.
A. The US is much more advanced in its health care system
B. American people are better at research than other people
C. new medicines are being developed all over the world
D. the newly developed technologies are aimed at curing fatal diseases
微信支付 
支付宝支付