在100m竞赛中，测得某一运动员5s末瞬时速度为10.4m/s，10s末到达终点的瞬

阅读理解。

       Li Hua, a middle school student in Yangzhou, doesn’t have time for breakfast. He always does his

homework until very late at night and can’t get up for breakfast the next morning. There are many other

students like Li. They don’t have healthy eating habits. Scientists from Southern University studied 1,790

students in Nanjing last year, according to the Xinhua News Agency. They found that 30% of middle

school students don’t have breakfast and 41.3 percent of students only eat the foods they like most.

      These bad eating habits may make the students fatter and affect the development of our bodies. A

study by the Ministry of Health(卫生部) in 2005 showed that about 20 percent of people aged 13 to 20

have a nutritional imbalance(营养失衡).This could cause high blood pressure and other serious problems. 

      Nutritional balance is important - especially for students. It can prevent health problems like diabetes(糖尿病). Proper nutrition(营养) also gives students enough energy to study.

      In order to improve students’ nutrition, many schools in China provide food between meals, such as

milk and fruit. Over half of Chinese middle and primary schools provide nutritious meals.

      However, some students don’t like the provided meals and have instant noodles(方便面) or KFC

instead. Hu Yongzhen, an expert from Southeast University, suggests that schools should improve their

nutritional meals in order to attract students. If possible, they should use the help of nutritional experts to

prepare meals for students.

     Tips to keep healthy:

     ★You shouldn’t eat what you like. You should eat all healthy food including meat, vegetables, fruit,

bread, noodles and milk. every day.

     ★Eat the right things for the seasons. In summer, people may sweat easily because of the hot weather. It is better to add a little more salt to food when you exercise in hot weather. And winter is coming, we can eat more red carrots which are full of vitamin C. It also helps stop a cough.

1. How many students don’t have breakfast in Nanjing last year?

A. 1,790

B. 537

C. 716

D. 358 

2.What problems may be caused if you have a nutritional imbalance?

A. High blood pressure

B. Diabetes

C. obesity(肥胖)

D. All of the above.

3. What’s the Chinese meaning of the word sweat ?

A. 增肥

B. 流汗

C. 吃东西

D. 运动

4. Which of the following is true ?

A. Bad eating habits won’t make the students fatter.

B. 30 percent of students only eat the foods they like most

C. We can eat more red carrots which are full of vitamin C.

D. Many students don’t like instant noodles(方便面) or KFC instead.

腹壁切口疝的病因有（）。

A.曾有切口裂开

B.曾有切口感染

C.多次腹部手术组织缺损

D.腹壁损伤

E.术后腹内压较高

“订单一发货一账单”的循环是（）的核心。

A．营销情报系统

B．营销分析系统

C．内部报告系统

D．营销调研系统

瓶库与重要的公共建筑应保持不小于（）的安全距离。

A、10m

B、25m

C、50m

D、100m

以下不能上高速的有（）.

A.拖拉机

B.变形拖拉机

C.尾灯损坏的车辆

D.超载车辆