治疗慢性肾炎目的在于()A．消除蛋白尿 B．消除血尿 C．利尿消肿 D．防止或延缓肾

煤的种类很多，性质差别很大。按煤形成时间不同可分为（）。

A.焦煤

B.褐煤

C.烟煤

D.无烟煤

British researchers are looking for volunteers willing to eat a piece of chocolate daily for a year in the name of science. The trial(实验) will explore whether flavonoids (类黄酮) found in chocolate and other foods can reduce the risk of heart disease.

“We are looking at a high risk group first,” said Aedin Cassidy, a biochemist who will lead the study.

Previous studies have suggested dark chocolate is rich in the beneficial flavonoids linked with heart health, but experts note the high sugar and fat content of most commercially available chocolate might cancel out some of the advantages. Other research has also shown dark chocolate appears to lower blood pressure, improve the function of blood vessels (血管)and reduce the risk of heart attack.

This has encouraged companies to market specific products containing dark chocolate. Mars Inc has introduced Cocoa Via, a line of dark and premium chocolates that plays up such health advantages.

Cassidy said her team will also publish findings in the American Journal of Clinical Nutrition showing that flavonoids found in soy and cocoa appear to have the strongest effects of reducing risk of heart disease.

The next step will organize 150 women volunteers with a specific illness. The researchers will look at whether flavonoids help reduce blood pressure, cut cholesterol levels and improve the condition of blood vessels.

Half the women in the year-long study will eat chocolate containing 30 grams of flavonoids found in soy, cocoa and other fruits and vegetables. The others will get chocolate without the active flavonoids.

“This could help doctors give advice to patients on the type and amount of foods to eat to reduce heart disease risk—and it does not necessarily need to be chocolate,” Cassidy said. “If this trial works we will be able to advise on a whole range of foods. People won't have to go around eating specially designed chocolate.”

1. What is the best title for the passage?

A. Volunteers wanted for chocolate study.           B. Chocolate is good for health.

C. A new research on heart attacks.                 D. Flavonoids found in chocolate.

2. What’s the purpose of the trial?

A. To test the advantages of a new kind of chocolate.

B. To find cures for heart disease.

C. To discover how to control blood pressure.

D. To explore the advantages of flavonoids.

3. From Paragraph 3 we can infer that __________.

A. Cassidy’s team has done several studies on chocolate

B. dark chocolate has proved beneficial to health

C. people should eat much chocolate with high sugar and fat

D. most commercially available chocolate doesn’t contain flavonoids

4. Which of the following statements is TRUE according to the passage?

A. All the volunteers will eat the same chocolate.

B. CocoaVia is a company that produces dark chocolate.

C. People who want to take part in the trial should be healthy.

D. Soy, cocoa, some fruit and vegetables contain flavonoids.

阅读理解

     In a world where comparisons happen non-stop, it is difficult to look outside yourself and to

ever be content with who you are. There's always someone who's a bit better. The only solution

is to reach inside and measure against what Warren Buffett calls your own inner yardstick. There

is no more accurate measure for comparison than who you were yesterday, last week or last

decade, when you were at your best.

     Nothing useful ever comes from comparison to others. Either you see yourself as better than

someone and you get lazy, or you see someone else as better than you and you feel like all your

hard work is for nothing. It is a fool's game. None of us are inherently above or below the person

next to us. We are who we are. Not one of us is exactly alike. The only direct and honest

comparison is within yourself. Everything else is apples to oranges.

     My opinion is that you are only allowed to compare yourself to someone else if their life situation

is the same as your own. Good luck finding that match. And one thing is for sure. No matter how

hard you work and how dedicated you are, there will always be someone who can run a little faster,

jump a little higher, score a little better or look a little nicer in a swimsuit. And if there's not, you can

bet someone is coming up fast behind you. So how can you always win in life? Become your best

competitor.

     The following are the reasons why you are your own best competitor.

     1. You will always be motivated.

     Having an image of your most recent past limits is the perfect thing to push you to the next level.

If you ran 7 flights of stairs yesterday, then do 8 today. Who cares if the guy next to you did 15? It

doesn't make a bit of difference. You are a more fit person today than you were yesterday. Your

own progress is all you need.

     2 . You will continuously be your personal best.

     If you commit to a slightly higher standard of yourself every day, you will always be at the top of your game. And that game will only get better. But if for some reason you fall off your mark, you will always have the past image of your best performance to show you what you're capable of. Once you've lone it, you know what's possible and then it's just a matter of doing it again.

 1. Through the passage the writer advises the readers to ____.

A. avoid comparison with others

B. work much harder

C. pay attention to others' progress

D. make full use of motivation

 2. If you want to achieve your best, according to the author, you should ____.

A. see yourself better than others

B. measure accurately

C. compare with yourself

D. be honest with yourself

3. Which of the following is certain to happen according to the author?

A. Finding someone else who is in the same life situation as you are.

B. Finding someone who runs faster and jumps higher than you.

C. Finding someone who is hiding right behind you.

D. Finding someone who almost always wins in their life.

4. What can help you up to higher level in your life according to the passage?

A. Comparing yourself with the guy next to you.

B. Thinking about your own progress.

C. Promising to play a game every day.

微型计算机系统中，常用CD-ROM作为外存储器，它是( )。

A．只读存储器
B．只读光盘
C．只读硬盘
D．只读大容量软盘

管理信息系统的功能很多，但在如下所列功能中，一般认为不属于管理信息系统功能的是()。

A．数据处理功能

B．事务处理功能

C．辅助决策功能

D．办公自动化功能