典型调查中的典型单位是（）。A、工作做得好的单位 B、工作中出现问题最多的单位 C、

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       There are students from all over the world at the United World School. In this school these

students study and spend their free time together. The school believes this will help them grow up

to be knowledgeable, caring and friendly.

       Once a year, there is a special "United Nations" show. Students are allowed to show anything

they want, but anything that comes from their traditional cultures. To get ready for the festival, they

have to teach each other.  And the school believes this will help them understand and enjoy the

culture of their friends better.

       This school also believes that students should be allowed to make some decisions themselves.

For example, the older students are allowed to wear what they want and the younger students are

allowed to choose which kind of uniform they want to wear. But all students are asked not to wear

an expensive necklace or something else like that,  and not to wear clothes that will make other

students unhappy.

       It is never possible to make everybody happy, but if we want to have a much more wonderful

world, it is important for students to understand and enjoy other cultures as well as to be proud of

their own.

1. Where do the students at the United World School come from? _____

A. China    

B. America    

C. Canada    

D. All over the world

2. What are the students allowed to do at the United World School? _____

A. To do everything they want      

B. To wear anything they want

C. To decide something themselves  

D. To choose anything they want

3. Which of the following is NOT right according to the passage? _____.

A. The school can help the students grow up to be friendly    

B. The school allows the students to make some decisions

C. We can make everybody happy by understanding each other    

D. It's important to help the students understand other cultures.

4. What can Li Lei, a Chinese boy, show on the festival according to the passage? ____

A. Play the piano              

B. Act Beijing Opera  

C. Sing an English song        

D.  Have a rock show

5. What does "this" in the passage? ____

A. The "United Nations" show    

B. The traditional culture

C. The school                  

D. The world

下列物质中属于电解质的是（　　）

①氯化钠②NH₃•H₂O③铜④蔗糖⑤二氧化碳．

A．①②

B．④⑤

C．③④

D．①⑤

下图是我国某盆地的局部地形剖面示意图。读图回答1—2题。

1、最适合形成天然绿洲的地带是[ ]

A、①　　

B、②

C、③　

D、④

2、该区域河流水文特征是[ ]

A、夏季流量小　

B、补给以降水为主　

C、水量向下游增大

D、径流年际变化小

按照作用分类，物流可分为（）。

A.供应物流

B.销售物流

C.生产物流

D.回收物流

E.废弃物物流

用于丙型肝炎的药物是（）

A.氟康唑

B.磺胺嘧啶

C.利巴韦林

D.拉米夫定

E.克拉霉素