题型:选择题 .Hearing that a 7.1-magnitude earthquake hit the Yushu county, Qinghai province on April 15,the students’ union______us to donate money for the quake-hit area.A.called upB.called forC.called inD.called on 查看答案
题型:单项选择题 目前我国预防艾滋病的基本措施之一是A.教育公众,洁身自爱,自我防护B.查出所有艾滋病病毒感染者并隔离他们C.全民接种艾滋病疫苗D.远离艾滋病感染者,防止传染自己E.以上都不是 查看答案