War is bad _______ all the people.[ ]
A. for
B. to
C. with
D. on
A
易引起血癌的有机溶剂是
A．苯
B．三硝基甲苯
C．苯二胺、硝基氯苯
D．甲苯、二甲苯
E．苯胺、联苯胺
定性研究
