The old man sometimes _____ to the park

阅读理解。

     Waste can be seen everywhere in the school. Some students ask for more food than they

can eat and others often forget to turn off the lights when they leave the classroom.

     They say they can afford these things. But I don't agree with them. Waste can bring a lot of

problems. Although China is rich in some resources(资源) , we are short of (缺乏) others, for

example, fresh water. It is reported that we will have no coal(煤) or oil to use in 100 years.

So if we go on wasting our resources, what can we use in the future and where can we move?

Think about it. I think we should say no to the students who waste things every day. Everybody

should stop wasting as soon as possible.

     In our everyday life, we can do many things to prevent waste from happening, for example,

turn off the water taps(水龙头) when we finish washing, turn off the lights when we leave the

classroom, try not to order more food than we need, and so on. Little by little, everything

will be changed. Waste can be stopped one day, if we do our best.      

1. From the passage we know that some students often _____ in the school.  

A. eat too much    

B. don't work hard

C. waste things    

D. throw rubbish everywhere

2. Which is not mentioned in this passage?   

A. Fresh water.  

B. Forest.

C. Oil.        

D. Coal.

3. Which of the following is right?

A. Waste brings problems.  

B. Waste can bring no problem.   

C. China is rich in fresh water.  

D. Students never waste things.

4. Which is the best title of this passage?

A. Stop Wasting  

B. School life  

C. Waste in the School  

D. Rich Resources in China

比x的5倍多7.2的数是9.8，求x．（列方程解）

结合我们所学的中国地理有关知识以及平时中的生活习惯，试着找出我们南方地区和北方地区存在着哪些主要的差异？至少回答出五点．______．

经代谢转变能提供一碳单位的氨基酸是（）。

A．甘氨酸

B．组氨酸

C．两者均是

D．两者均不是

26岁初产妇，妊娠40周，规律宫缩24小时，检查宫口开大4cm，胎头前囟位于耻骨联合后方，胎膜已破，羊水混浊绿色，胎心104次／分，本例最恰当的处置是（）

A.等待宫口开全产钳助娩

B.等待自然分娩

C.静脉滴注地诺前列酮

D.静脉滴注缩宫素

E.剖宫产术