软件工程的理论和技术性研究的内容主要包括软件开发技术和
A．消除软件危机
B．软件工程管理
C．程序设计自动化
D．实现软件可重用
参考答案：B
解析： 软件工程的目标是，在给定的成本、进度的前提下，开发出具有有效性、可靠性、可理解性、可维护性、可重用性、可适应性、可移植性、可追踪性和可互操作性且满足用户需求的产品。基于这一目标，软件工程的理论和技术性研究的内容主要包括：软件开发技术和软件工程管理。
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| Many students have hobbies, such as reading, painting，growing vegetables in their gardens, and looking after animals. Some hobbies are relaxing and 1 are creative. Hobbies can develop your interests and help you learn new skills(技能). David Smith is a student，and his hobby is writing. 2 the summer of 2000，he spent four weeks on a summer camp. As well as the usual activities, such as sailing, climbing and mountain biking, there was a writing workshop with a professional 3 “She asked us to imagine that we were in a story, Then we wrote about our 4 at the camp.” In senior high school David wrote a story about teenage life, and it 5 as a book in 2003. Many teen-agers love his book, and as a result, David has become a 6 young writer.David has been very lucky 7 his hobby has brought him enjoyment and success , but he is 8 interested in many other things.“I like playing volleyball，too，''says David. “I spend some of my free time playing volleyball for my school team. 9 I’11 write more books in the future.”It's sometimes difficult 10 that we shouldn't spend all our time on our favourite hobby. There are many other interesting things to do in life , and we should try to do something new or different. | |||
| ( ) 1. A. other ( ) 2. A. During ( ) 3. A. manager ( ) 4. A. experiences ( ) 5. A. took out ( ) 6. A. successful ( ) 7. A. or ( ) 8. A. too ( ) 9. A.Usually ( )10. A. remember | B. others B. At B. doctor B. examples B. tried out B. normal B. but B. also B. Immediately(立刻、立即) B. remembers | C. the other C. For C. singer C. excuses. C. came out C. polite C. because C. only C. Maybe C. remembered | D. another D. On D. writer D. experiments(实验) D. went out. D. lonely D. though D. either D. Once D. to remember |
某企业需要采用甲、乙、丙三种原材料生产Ⅰ、Ⅱ两种产品。生产中，两种产品所需原材料数量、单位产品可获得利润以及企业现有原材料数如表所示
| 产品(吨) | 现有原材料(吨) | |||
| Ⅰ | Ⅱ | |||
| 资源 | 甲 | 1 | 1 | 4 |
| 乙 | 4 | 3 | 12 | |
| 丙 | 1 | 3 | 6 | |
| 单位利润(万元/吨) | 9 | 12 | ||
A．甲
B．乙
C．丙
D．乙和丙