产后出血最常见的原因是（） A.胎盘残留 B.胎盘部分剥离 C.软产道裂伤 D.子宫

80×86的I/O 口与主存储器地址编址方式为()。

A．统一编址

B．独立编址

C．以上都是

D．以上都不是

阅读理解。

     There's no doubt that fast food has become an important part of modern life, especially among teenagers.

According to research, in the UK 80% of meals are eaten outside the home. And more than 50% of teenagers

eat, on average, more than one hamburger every three days. The percentage is high and nutritionists (营养专

家) are worried, but is fast food really as harmful as they say it is?

     Here is what two experts, Jake Hyde and Ursula Birkbeck, have to say on the subject. " Fast food is junk

food," says Jake Hyde.

     "Fast food is of very little nutritional value. It is full of fat, especially the harmful type, which is found in

meat, butter, cheese and mayonnaise. We need to cut down on fat if we want to stay healthy. Another thing

is that fast food contains too much salt and sugar and too many additives (添加剂 ). It is also low in vitamins

and fiber, because it includes hardly any vegetables. As a result, it doesn't provide us with enough nutrients,

just lots of calories. Most teenagers who have made fast food an important part of their diet are overweight.

This, along with the fact that they hardly ever take any exercise, puts their health at risk. It can lead to serious

health problems like heart disease or diabetes."

     "People shouldn't feel guilty every time they have a burger," says Ursula Birkbeck." What is in it not that

bad. Don't forget that red meat is a good source of iron and cheeseburgers (干酪汉堡包 ), for instance,

contain calcium. Chips, which most people think are unhealthy, are not so bad after all, because potatoes are

rich in Vitamin C. However, we shouldn't eat too much sauce or mayonnaise. Nowadays, fast food restaurants

pay attention to health matters and nutrition. They have improved the quality of their food, use fewer additives,

vegetable oil for cooking and some even use low-fat products. Also, most places offer salad bars, which give

people the chance to balance fast food with vegetables that contain other nutrients. So, people don't need to

prevent fast food from their diet completely. It's all a matter of what type of fast food they choose to eat, how

often and what else they eat during the day."

1. From the first paragraph we know that _____.

A. it's doubtful that fast food has become an important part of modern life

B. most meals in the UK are eaten inside the home

C. over half of the British teenagers average over one hamburger every three days

D. nutritionists are sure that fast food is very harmful

2. The underlined word "mayonnaise" in Paragraph 3 is a type of ______.

A. fat

B. food

C. meat

D. additive

3. The difference of the two experts' opinions lies in ______ .

A. whether fast food has little nutritional value

B. whether fast food is full of fat

C. whether fast food has improved its quality

D. whether fast food restaurants pay attention to health matters

4. What would be the best title for the passage?

A. Fast food-junk food

B. Fast food-friend or enemy?

C. Which expert is right?

D. The fast food restaurants are improving

在行业发展的四阶段模型中，对银行来说，比较理想的阶段是( )。

A．启动阶段

B．成长阶段

C．成熟阶段

D．衰退阶段

一体化管理者在设计阶段需要做的工作有（）。

A.组织招标工作，调整合同价款

B.组织做好工程量清单及标底的编制

C.组织编写设计任务书

D.审核设计单位合同的责任和义务

E.分析投标单价和费用与标底的价差

简答模型库子系统的具体功能。