谷氨酸的R基为C3H5O2,1分子谷氨酸含有的C、H、O、N原子数依次是[ ] 发布时间:2017-04-21 22:20 │ 来源:www.tikuol.com 题型:选择题 问题: 谷氨酸的R基为C3H5O2,1分子谷氨酸含有的C、H、O、N原子数依次是[ ]A.5、9、4、1B.4、8、5、1C.5、8、4、1D.4、9、4、1
题型:选择题 A: Hey, Peter, what’s wrong?B: I had a fight with my best friend. What _小题1:_____ I do?A: Well, you could write him a letter.B: I don’t think so, although it’s a good _小题2:____. I ’m just not very good at writing.A: Maybe you should ___小题3:_him up..B: No, I don’t want to talk it on the phone.A: But you ___小题4:__ should talk to him so that you can say you’re sorry.B: Yes, I know I should I should, but it’s not ____小题5:___. 查看答案