简述政府投资的必要性。

红磷

We don’t know how different our life will be in the future . We can only try to imagine it .

At first we think about human relationship . In the year 2050 , we will use computers almost every day . We will be making new friends through the Internet—even our husbands or wives will be met in this way . It will be much faster and easier for us . On the other hand , our relationships with people won’t be as important as they are today—we will feel a little lonely .

Computers will also help us in many other activities in 2050 . For example , they will be used by the children at school to make their learning easier . In addition , there will be much more other machines which will play a similar role as computers , like robots which will do the housework for us .

Spending holidays will also be completely different . Traveling to other planets or to the moon will be available for everyone . Means of transport will , of course , change , too . we will be using solar-powered cars , which will be much more environmentally friendly .

We could expect that the faster technological progress would lead to a more polluted environment . But it isn’t true .We will pay more attention to protecting the environment . And , scientists will probably find cures for many dangerous diseases , like cancer or AIDS . Therefore , our surroundings as well as health will be in a better condition .

Although we can’t predict the exact changes which will be made in the world , we often think about them . We worry about our and our children’s future ; we have expectations , hopes as well as fears . But I think we should be rather sanguine about our future . We should be happy and believe good things will happen .

1. Why will people probably feel a little lonely in 2050 ?

A. Because the number of people will become much smaller .

B. Because there will be less face-to-face communication .

C. Because people won’t like making friends with each other .

D. Because people won’t communicate with each other much often .

2. The third paragraph mainly tells us_________.

A. that computers will do all the things for human beings

B. how people will use computers to communicate with each other

C. that machines like computers and robots will help people a lot

D. how people will use robot to do the housework

3. According to the passage , which of the following will happen in 2050 ?

A. The relationship between people will be more important than that of today .

B. The way of spending holidays will be the same as that of today .

C. It won’t be difficult for people to travel to other planets .

D. Our environment will be much more polluted with a growing number of cars .

4. What does the passage mainly talk about ?

A. How peoplewill communicate in the year 2050 .

B. What our life will be like in the year 2050 .

C. How people will travel and spend their holidays in the year 2050 .

D. What high technology will appear in the year 2050 .

在我司GMSC/SSP交换机中，固定电话呼叫预付费用户产生话单有（）

A.ROAM

B.GWO

C.MOI

D.MTC

与氧气接触的管材、附件、阀门要（）。

A.除锈

B.清洗

C.脱脂

NJ07型列车在运行中遇主风管压力小于（）时，列车会自动施加紧急制动使列车停车。

A.8.4bar

B.8.0bar

C.7bar

D.6bar