A:对待生物武器的态度应明确而坚定,即坚决禁止生物武器
B:中国对于克隆人的态度是不反对治疗性克隆,可以有限制的进行克隆人的实验
C:对转基因植物外源DNA要进行认真选择,避免产生对人体有害的或过敏的蛋白质
D:一旦发现转基因生物出现了安全性问题,要马上停止试验,并销毁重组生物
A
B
C
D
升高温度,平衡常数增大
0~3s内,反应速率为:
v(NO2)=0.2mol·L﹣1
t1时仅加入催化剂,平衡正向移动
达平衡时,仅改变x,则x为c(O3)
下图①②③④分别表示不同的变异类型,其中图③中的基因2由基因l变异而来。有关说法正确的是()
①以道德模范的鲜活事迹,引领社会新风尚
②从日常点滴做起,让每个人都成为道德模范
③应为人民群众开展精神文明创建活动点赞
④使社会主义核心价值观成为时代精神的核心
根据短文内容, 选择正确答案。
Hi. I'm Liu Ying. This is my school. It's big and beautiful. There are twenty classes in my school. There are nine hundred(百) students in my school. There are four beautiful gardens in it. There is a building in my school. On the first(第一) floor, there are two offices and a hall. There are six classrooms on the first floor too. On the second floor, there are fourteen classrooms and two toilets. There is a big library and some reading rooms in my school too. I like my school very much.