扦插基质
参考答案：
目前所用扦插基质基本有三种状态：即气态、液态和固态。
It is strongly suggested that measures ______ students to cheat in the exams. [ ]
A. be taken to prevent
B. be taken to forbid
C. are taken to prevent
D. are taken to forbid
伴有心动过速的心绞痛患者宜选用
A．普萘洛尔
B．硝酸甘油
C．维拉帕米
D．地尔硫革
E．阿托品
