题目

用方框中所给词的适当形式填空。【1】Someone thinks that chiguaqunzhong means the big ___________who is watching everything.【2】The teacher ______________the rules to children last week.【3】China is an ____________country.【4】Candy told me that she overcame (克服) _____________by singing.【5】Don't let anyone else know what we've talked about. It's a_________conversation.下列用水就能鉴别的一组物质是                （  ）A．苯、己烷、四氯化碳B．苯、乙醇、四氯化碳C．溴苯、乙醇、四氯化碳D．溴苯、乙醇、乙酸