苯二氮卓类药物包括
A．地西泮
B．苯巴比妥
C．硝西泮
D．水合氯醛
E．艾司唑仑
参考答案：A,C,D
能用来分离Mg2+和Al3+的试剂是（ ）[提示：NaAlO2+HCl+H2O=Al（OH）3↓+NaCl]．
A．氨水
B．NaOH溶液和盐酸
C．氨水和盐酸
D．NaOH溶液
Not only I but also other workers____ willing to have a rest after a week's work.[ ]
A. is
B. are
C. am
D. be
