问题 单项选择题

在一次国际会议上,人们发现与会代表中有10人是东欧人,有6人是亚太地区的,会说汉语的有6人。欧美地区的代表占了与会代表总数的以上,而东欧代表占了欧美代表的以上。由此可见,与会代表人数可能是()。

A.22人

B.21人

C.19人

D.18人

答案

参考答案:C

解析:

根据已知条件10人是东欧人,要想使东欧代表占欧美代表的2/3以上,则欧美代表人数必须小于15,也即为10、11、12、13、14。

当欧美代表人数为10人时,此时代表总人数最少为10+6=16(人),而欧美代表无法达到与会代表的2/3以上(即10.7人以上),所以当欧美代表人数为10人时不符合要求;

当欧美代表人数为11人时,此时代表总人数最少为11+6=17(人),而欧美代表无法达到与会代表的2/3以上(即11.4人以上),所以当欧美代表人数为11人时不符合要求;

当欧美代表人数为12人时,此时代表总人数最少为12+6=18(人),而欧美代表达到与会代表的2/3(即12人),但不在以上,所以欧美代表人数为12人时也不满足要求;

当欧美代表人数为13人时,此时代表总人数最少为13+6=19(人),而欧美代表达到与会代表的2/3(即12.6人)以上,所以欧美代表人数为13人时满足要求,而此时与会代表的总人数为19;

当欧美代表人数为14人时,此时代表总人数最少为14+6=20(人),而欧美代表达到与会代表的2/3(即13.2人)以上,所以欧美代表人数为14人时满足要求,而此时与会代表的总人数为20;

综上,19和20都是正确的答案,选项中只有19一个,所以选择C。此外,此题也可直接从欧美人占2/3以上得出亚太人比例小于1/3,可知与会总人数大于18;又知东欧人占欧美代表的2/3以上,可知欧美人少于15人,可知与会总人数小于15+6=21。故选C。

阅读理解

第三部分 阅读理解(共15小题,每题2分,满分30分)

请认真阅读下列短文,从短文后各题所给的四个选项(A、B、C和D)中,选出最佳选项并在答题卡上将该项涂黑。

We find that bright children are seldom held back by mixed-ability teaching. On the contrary, both their knowledge and experience are enriched. We feel that there are many disadvantages in streaming(按能力分班) pupils. It does not consider the fact that children develop at different rates. It can have had effect on both the bright and the not-so-bright children. After all, it can be quite discouraging to be the bottom of the top grade.

Besides, it is rather unreal to grade people just according to their intellectual(智力) ability. This is only one aspect of their total personality. We care much about the development of all the pupils’ abilities to the full, not just their study ability. We also value personal qualities and social skills, and we find that mixed-ability teaching does good to these aspects of learning.

In our classrooms, we work in various ways. The pupils often work in groups; this gives them the chance to learn to work together, to share, and to develop leadership skills. They also learn how to deal with personal problems as well as learning how to think, to make decisions, to analyze(分析) an devaluate(评价) and to communicate effectively. The pupils learn from each other as well as from the teachers.

Sometimes the pupils work in pairs; sometimes they work on individual(个人) tasks, and they can do this at their own speed. They also have some formal class teaching when this is proper. We encourage our pupils to use the library, and we teach them the skills they need in order to do this well. An advanced pupil can do advanced work and it does not matter what age the child is. We expect our pupils to do their best, not their least, and we give them every encouragement to achieve this goal.

56. By “held back” in the first paragraph, the writer means “________”.

A. made to remain in the same class            B. forced to study in the lower class

C. drawn away form their studies         D. prevented from advancing

57. The writer’s purpose of writing this passage is to ________.

A. argue for teaching bright and not-so-bright pupils in the same class

B. advise pair work and group work for classroom activity

C. offer advice on the proper use of the library

D. tell us the importance of proper formal classroom teaching

58. What would be the best title for the text?

A. Pair work.      B. Group work.    C. Mixed-ability teaching    D. Individual tasks.

单项选择题