血管扩张药（）。
A．氯沙坦
B．硝普钠
C．可乐定
D．哌唑嗪
E．氢氯噻嗪
参考答案：B
配位滴定条件如何选择，主要从哪几个方面考虑？
Boys and girls, your dream will come true as long as you don't _____. [ ]
A. stay up
B. take up
C. get up
D. give up
