牙槽嵴修整术最好在何时进行（）。
A.拔牙后2周
B.拔牙后6周
C.拔牙后1个月
D.拔牙后2个月
E.拔牙后3个月
参考答案：C
_____ with his wife twice, James decided it was time that they had a heart-to-heart talk.[ ]
A. Quarreling
B. Quarreled
C. Having quarreled
D. To quarrel
检查孤立肾最重要的方法是()
A．肾图检查
B．排泄性尿路造影
C．CT检查
D．B超检查
E．摄尿路平片
