2013年GCT英语日常练习（8.19）

Questions 16—20 are based on the following passage:

During the summer session there will be a revised schedule of services for the university community. Specific changes for intercampus bus services, summer hours for the cafeteria, the infirmary (校医院) and recreational and athletic facilities will be posted on the bulletin board outside of the cafeteria. Weekly movie and concert schedules which are in the process of being arranged will be posted each Wednesday outside of the cafeteria.

Intercampus buses will leave the main hall every hour on the half hour and make all of the regular stops on their route around campus. The cafeteria will serve breakfast, lunch, and early dinner from 7 a.m. to 7 p.m. during the week and from noon to 7 p.m. on weekends. The library will maintain regular hours during the week, but shorter hours on Saturdays and Sundays. The weekend hours are from noon to 7 p. m.

All students who want to use the library borrowing services and recreational athletic, and entertainment facilities must have a valid summer identification card. This announcement will also appear in the next issue of the student newspaper.

16. Which of the following is the main purpose of this announcement?

A. To tell campus personnel of the new library services.

B. To announce the new movies on campus this summer.

C. To notify university people of important schedule changes.

D. To remind the students to validate their identification cards.

17. Specific schedule revisions for which of the following facilities are listed in this announcement?

A. Athletic and recreational. B. Food and transportation.

C. Bookstore and post office. D. Medical and audio-visual.

18. Times for movies and concerts are not listed in this announcement because ______________.

A. film or concert occurs every Wednesday at 7 p. m.

B. the full list would be too long

C. films and concerts cannot be announced publicly

D. the full list is not ready yet

19. According to the announcement which of the following is true of special summer hours for the library?

A. It has them only on the weekends.

B. It has them both weekdays and weekends.

C. It has no special summer hours.

D. The information is not available.

20. According to the announcement, a validated identification card is required to __________.

A. ride on intercampus buses

B. read announcements in the cafeteria

C. make use of the infirmary

D. check books out of’ the library

（本期答案明日公布）

8月17日参考答案：

1、【答案】C

【解析】设完成剩余的工程还需要的天数是x，则8×35=12（8+6）x，故x=40。

2、【答案】B

【解析】设人数为X个，有K个椅子，则有：2X+4（X-K）+3K=6X-K=43，从而知：X≥8且K≤8，综合分析，仅8符合题意，选B。

3、【答案】C

【解析】设最低定价为X元，已知：X≤21*（1+20%）；（X-21）（350-10X）≥400；由以上分析可知：X≤25.2；（X-25）（X-31）≤0；所以X≤25.2，同时25≤X≤31；所以：25≤X≤25.2，选C。

4、【答案】C

【解析】对于一个有限集合X，其所有子集的个数为2N，其中N为集合X所含元素的个数。由此可知，本题的答案是24，即选C。

5、【答案】C

【解析】试题主要考查一元二次方程的求解。根据题意，a+b2=2ab，整理得ab2-4ab+1=0，因为a>b，所以求解该方程得ab=2+3，于是ab=7+43≈7+4×1.7=13.8，故选C。