治疗抽动-秽语综合征的首选药为
A．泰必利
B．哌速清
C．盐酸可乐定
D．氟哌啶醇
E．肌苷
参考答案：D
Exactly when the first people arrived in ________ we now know as California, no one really knows.
A．which
B．what
C．that
D．it
用酸度计测pH值时，为什么必须用标准缓冲溶液校正仪器应如何进行
