问题 单项选择题

某机关精简机构,计划减员25%,撤销三个机构,这三个机构的人数正好占全机关的25%。计划实施后,上述三个机构被撤销,全机关实际减员15%。此过程中,机关内部人员有所调动,但全机关只有减员,没有增员。
如果上述断定为真,以下哪项一定为真
Ⅰ.上述计划实施后,有的机构调入新成员。
Ⅱ.上述计划实施后,没有一个机构,调入的新成员的总数,超出机关原总人数的10%。
Ⅲ.上述计划实施后,被撤销机构中的留任人员,不超过机关原总人数的10%。

A.只有Ⅰ
B.只有Ⅱ
C.只有Ⅲ
D.只有Ⅰ和Ⅱ
E.Ⅰ、Ⅱ和Ⅲ

答案

参考答案:A

解析: 本题题型归纳为“数学考题(集合)”。根据“撤销三个机构,这三个机构的人数正好占全机关的25%”与“上述三个机构被撤销,全机关实际减员15%”,25%>15%,所以Ⅰ“上述计划实施后,有的机构调人新成员”一定对。Ⅱ和Ⅲ建议从极端情况简单考虑就明白不一定对。

阅读理解

阅读理解。

     The weather is getting hotter. You are thirsty playing basketball or riding

home from school. A cold drink may be just the thing. But be careful what

you are drinking. Something that looks cool may not be good for your health. There are plenty of "energy(能量) drinks" on the market. Most of them have

beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!

     But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially(尤其) aimed at(针对) young people, students, busy people and sports players. Makers sometimes

say their drinks make you better at sports and can keep you awake. But be

careful not to drink too much.

     Caffeine makes your heart beat(跳动) fast. Because of this, the

International Olympic Committee has limited( 限制) its use. Caffeine in

most energy drinks is at least as strong as that in a cup of coffee or tea.

Possible health dangers have something to do with energy drinks. Just one

box of energy drink can make you nervous, have difficulty sleeping and can

even cause heart problems. Scientists say that teenagers should be

discouraged from taking drinks with a lot of caffeine in them.

1. Many people like drinking energy drinks because of the following

EXCEPT that ________.

A. they have beautiful colors and cool names        

B. they have lots of caffeine

C. they can keep them awake and better at sports    

D. they are said to be helpful to health

2. The main reason for people not to drink too much energy drinks is that

they may cause ________.

A. heart problems    

B. nervousness  

C. sleeping difficulty  

D. possible health dangers

3. The underlined word "discouraged" can be replaced(替换) with "_____".

A. encouraged   

B. stopped  

C. helped   

D. disliked

4. From the passage we can know that _________.

A. advertisements are important in getting people to buy energy drinks

B. energy drinks are helpful to teenagers' study

C. sports players need to drink a lot of energy drinks

D. energy drinks are especially aimed at teenagers

5. Which of the following can be the best title(标题) of the passage?

A. What's the Use of Energy Drinks?    

B. Who Can Drink Energy Drinks      

C. What's That in Energy Drinks?  

D. Why Can't We Buy Energy Drink

单项选择题