患者男,30岁,缺失,余牙正常,作为基牙所选用的卡环是()
A.三臂卡环
B.联合卡环
C.延伸卡环
D.对半卡环
E.圈形卡环
参考答案:A
—Guess, how much does it cost —I think it costs ______ 15 and 20 dollars.
A. from B. between C. among D. with
()的制定是在高校总的培养目标指导下根据各自专业定向进行的。