I. 单项选择 （共15小题，每小题1分，满分15分）
1. ---Are you free after school?
---Sorry, I’ve planned to treat a friend of mine to dinner ______ for help.
A. in order B. in return C. in turn D. in respect
2. That year his income, with his reward ______, ______ 12,000 yuan.
A. added to, added up to B. added, added to
C. added up to, added D. adds, to, adds up to
3. You should read the ______ first when using the new washing machine.
A. introductions B. explanations C. directions D. expressions
4. ______ the frequent communication is deepening the understanding between countries greatly, it may also _______ some unsteady factors.
A. While; contribute to B. When; apply to C. If; take on D. As; lead to
5. The exchange program between the UK and China may affect various schools, _____ from kindergartens to high schools.
A. spreading B. investing C. drifting D. ranging
6. ______ from endless homework on weekends, the students now find their own activities, such as taking a ride
