the childall day long! A.Let, not to cry 发布时间:2017-05-18 02:39 │ 来源:www.tikuol.com 题型:选择题 问题: the child all day long!A.Let, not to cryB.Not let, cryC.Don’t let, to cryD.Don’t let, cry
题型:选择题 I didn’t know at first, but later we became good friends.A.who is the boyB.who the boy isC.who was the boyD.who the boy was 查看答案
题型:选择题 2003年10月16日,“神舟五号”安全返航,标志着我国载人航天技术取得历史性突破.火箭所用的燃料为偏二甲肼[(CH3)2N2H2],其主要反应为(CH3)2N2H2+N2O4→X+CO2+H2O,由此可知X中一定含有的元素是( )A.碳B.氢C.氧D.氮 查看答案