基因工程技术中实现目的基因与载体DNA连接的酶是( )。 A.DNA聚合酶 B. 发布时间:2021-11-02 01:43 │ 来源:www.tikuol.com 题型:单项选择题 问题: 基因工程技术中实现目的基因与载体DNA连接的酶是( )。A.DNA聚合酶 B.RNA聚合酶 C.DNA连接酶D.RNA连接酶 E.限制性内切核酸酶
题型:单项选择题 当代世界的新变化(深刻变化)是“三个代表”重要思想形成的时代背景,这些变化有A.世界政治格局多极化趋势越来越明显B.经济全球化已成为不可阻挡的历史潮流C.现代科学技术迅速发展D.各种思想文化相互激荡 查看答案
题型:单项选择题 补全对话。A: Hi, Bill. Where __1__ you go on vacation?B: I went to Mount Changbai.A: __2__ was your vacation?B: Pretty good. The weather __3__ not hot __4__ cold. We climbed some __5__ .A: You say you had a good time?B: Sure. Where did you go?A: Well, nowhere. I stayed __6__ __7__ , Maybe I’m __8__ to Mount Changbai next vacation, but I'm not __9__ .B: If you have a _10__ , take it. 查看答案