食入性中毒的药物导泻时常用
A．硫酸钙
B．硫酸镁
C．碳酸钙
D．碳酸钠
E．氯化钾
参考答案：B
解析：硫酸镁口服有导泻作用，常用来排出肠道内的毒物。
Johnny, _____ into a poor family, had only three years of schooling.[ ]
A. having born
B. born
C. being born
D. be born
中介机构可以为出国定居、探亲、访友、继承财产和从事其他（）的人员提供服务。
A、公务活动
B、旅游
C、非公务活动
D、体育
