烯烃命名时,选择离官能团()一端开始用阿位伯数字编号。 A.最近 B.较近 C.较远 发布时间:2018-05-27 12:24 │ 来源:www.tikuol.com 题型:单项选择题 问题: 烯烃命名时,选择离官能团()一端开始用阿位伯数字编号。A.最近B.较近C.较远D.最远
题型:单项选择题 ----Is it the first time you _______ Beijing?----No. But the first time I ______ here, the city wasn’t so beautiful.A.visited; cameB.visited; have comeC.have visited; have comeD.have visited; came 查看答案