原型提供有效集成化字典是一项关键的软件需求,它在下列原型生命周期的( )中提供。
A.识别基本需求
B.模型检验
C.原型修正和改进
D.开发工作模型
参考答案:C
氢键使电子云密度平均化,的双键性减小,因此伸缩振动频率升高。()
单词拼写。(每题0.5分,共5分)
1. Sometimes I wonder how _________(相关的) chemistry is to these students.
2. Please raise your hand if you are in f________ of the new plan.
3. It was such a __________( 特权 ) to have spend a day with Tombe’s family.
4. I thought my explanation would calm him down, but it turned out to have the o_______ effect.
5. He p________ a beautiful birthday gift for his girlfriend in Xinhua Shopping Center last month.
6. The sales team is working hard to achieve the _________( 目标 ) of selling 5,000 books this month.
7. He told us that he wouldn’t have done the job well without the __________ ( 鼓励 ) of his wife.
8. It wasn’t wise to r_________ from your job during such a crisis.
9. What a sweet victory to be __________ ( 羡慕 ) by those women!
10. That the famous magazine Reader’s Digest has d_______ it will close down comes as a shock to all of us.