核酸碱基的配对原则是() A.A-C,T-G B.A-T,G-C C.C-T,A-G 发布时间:2017-08-27 16:49 │ 来源:www.tikuol.com 题型:单项选择题 A1/A2型题 问题: 核酸碱基的配对原则是()A.A-C,T-GB.A-T,G-CC.C-T,A-GD.任何两个碱基均可随意配对E.A-T,T-G
题型:单项选择题 A1/A2型题 用所给单词的适当形式填空.1. How about _____ (play) soccer after school?2. Why not _____ (buy)a nice belt?3. Would you like _____ (have)a pair of sunglasses?4. Let's _____ (go) to the movies.5. Shall I _____ (open) the door? 查看答案