常见的小型线理有(),()和()等。
参考答案:皱纹线理;位长线理;矿物生长线理
— Tom graduated from college at a very young age.
— Oh, he _____ have been a very smart boy then. [ ]
A. could
B. should
C. might
D. must
下列药物中,治疗慢性心功能不全有效的是()
A.维拉帕米
B.氨氯地平
C.尼莫地平
D.地尔硫
E.硝苯地平