矿粒密度与水的密度之比称为矿粒的（）A、绝对密度B、分选密度C、临界密度D、相对密度

阅读理解。

     There's a worldwide financial crisis (金融危机) going on. Clearly, it's becoming harder to find a job

for many college students. So here is a piece of advice to them who are finding their first jobs. You

should find a job as a beginning of your career. Not everyone can find a good job at first. No matter

what your first job is, you can learn a lot about how to be a successful person from it. Let's have a look

at the first jobs of many famous people.

     Michael Dell, Chairman of Dell Computer Corp, was a dishwasher at a Chinese restaurant making

2.30 yuan an hour. He is grateful for his early job , " The best part was the wisdom of the restaurant's

owner, which I could get if I came to work a little early. He loved his work and cared about every person who came through his door. "

    Jack Ma, Chairman and CEO of Alibaba Group, was a worker on his tricycle (三轮车).

    Barack Obama, the first black President of America,was an assistant in an ice-cream shop.

    Before Jennifer Lopez becoming a superstar, she was working at a law office as an assistant.

    Most of people are not successful in their first jobs. But they can learn many things to get success.

1. 判断正误（“T”表示正确，“F”表示错误）

   ( ) Only a few people could be successful in their first jobs. 

2. Why is it harder for many college students to find jobs?

    _______________________________________________________________

3. What was Michael Dell's first job?

    _______________________________________________________________

4. Where was Barack Obama's first work place?

    _______________________________________________________________

5. 将文中画线句子译成汉语。

    _______________________________________________________________

以淀粉胶、琼脂或琼脂糖凝胶、聚丙烯酰胺凝胶等作为支持介质的区带电泳法称为（）

A．等电聚焦电泳

B．毛细管电泳

C．凝胶电泳

D．醋酸纤维素薄膜电泳

E．硝酸纤维素薄膜电泳

农药载体

能增强非去极化肌松药作用的电解质紊乱的是（）

A.低血钾

B.高血钾

C.高血镁

D.高血钙

E.低血镁

身体灼热，神昏谵语，舌蹇肢厥，舌绛，辨证为（）

A.湿热酿痰蒙蔽心包证

B.热陷心包证

C.热灼营阴证

D.热盛迫血证

E.热盛动风证