Swimming is very popular in the world. Most people like swimming in summer, even in the other three seasons. Water makes people feel cool and swimming makes people keep healthy.

If you swim in a wrong place, it may not be safe. A lot of people died when they were enjoying themselves in the water, and most of them were students. Now some people are not careful enough in swimming. They often think they can swim so well that nothing will happen to them in water. If you go swimming in summer, don’t forget that a lot of good swimmers have died in water. They died not because they couldn’t swim, but because of their carelessness (粗心). Don’t get into water when you are alone. If there is a “No Swimming” sign（标记）, don’t get into water. If you remember these, swimming will be safe and enjoyable (舒服的).

根据短文内容，选出能完成所给句子的最佳答案。

1.____ like swimming in summer.

A. Few people  B. Most people C. Only students        D. Only swimmers

2.Swimming can make people keep ____ .

A. clean    B. fat          C. healthy D. thin

3.It’s ____ to swim in a wrong place.

A. wonderful     B. interesting    C. not safe         D. not careful

4.Some swimmers died in water because they are ____ .

A. students        B. children         C. not strong     D. too careless

5.If you go swimming, you shouldn’t ____ when you are alone.

A. get into water        B. die in water  C. swim too long        D. swim too badly

Most people want to work, but in today’s word ,it is more difficult to find work for everybody.The economics of the world need to grow by 4% each year just to keep the old number of jobs for people.

Often this is not possible,and so more people are out of work.

Some people have no jobs now because new machines can do the work of many people do in a short time.Also, machines do not ask for more money and longer holidays. In all the countries of the world, machines are taking work from people ,not only in factories but also on the farms.

One machine can often do the work of forty people. About 75,000 people are moving to the cities a day to look for jobs ,but only 70% of them can find jobs .

1.The economics of the world need to grow to______.

2.Some people are out of work because _______.

3.About machines,which of the following is NOT　RIGHT?________.

4..How many people can’t find jobs every day _______?

5..From the passage, we know _______.

Do you live in a city? Do you know how cities began? Long long ago, the world had only a few thousand people. These people moved from one place to another. They moved over the land, hunting animals for food.
No one knows how or when these people learned about growing food. But when they did， their lives changed. They did not have to look for food any longer. They could stay in one place and grow it. People began to live near one another, so the first village was established. Many people came to work in the villages, and these villages became even larger.
When machines appeared, life in the villages changed again. People built factories. More and more people lived near the factories. The cities began.
Today, it’s strange that some people are moving back to small villages. Can you tell me why?
根据短文内容，判断正(T)误(F)。
【小题1】People moved from place to place to hunt animals.
【小题2】The story says,“No one knows how or when these people learned about growing food. But when they did, their lives changed.” In this sentence, the word “they” means people.
【小题3】 When machines appeared, life in the cities changed again.
【小题4】 All people like to live only in very big cities.
【小题5】 People built factories after the cities grew big.

The London Olympic Games are coming soon. This summer, Chinese sports fans will be able to watch the exciting games in 3-D on CCTV.

When you watch 3-D movies or TV, you have to wear a special pair of glasses. The 3-D glasses make the people and the things on the screen look like they are in the room with you.

3-D, means having three *dimensions: *width, height and *depth. 3-D technology is based on the way the human brain and eye work. Because the *pupils of a person’s eyes are about 6.5cm apart, when we look at something, each eye sees it from different *angle. Our eyes send the two pictures to our brain, and the brain puts them together. The small difference between the picture from the right eye and the picture from the left eye make us see depth.

While watching 2-D films, we don’t have to wear the special glasses. We see the pictures in two dimensions, each eye get the same information. This is because there is only one way of watching it.

So the aim of 3-D technology is to get a different picture into each eye of the person. It uses two film *projectors. One *projects a left eye picture and the other projects a right eye picture. When we are in the cinema, we can see different pictures in each eye at the same time with the help of the 3-D glasses.

While watching 3-D films, we feel that we are actually in the same environment as the things we are watching. However, some people are against watching 3-D films. One of the reasons is the 3-D glasses makes the screen of the film or TV look darker. It is bad for eyes. What’s more, people with eye problems may get headaches if they spend too much time watching 3-D movies, because their brains need to work harder to “read” the pictures.  

1.Paragraph 3 mainly tells us __________.

A．how we see things in 3-D                  B．how we watch the Olympic Games

C．how 3-D films are made                   D．where we watch 3-D films or TV

2.When we watch a 2-D film, each of our eyes get ________ information.

A．no               B．different          C．dark             D．the same

3.Which is the following is right according to the passage?

A．We don’t have to wear 3-D glasses if we watch games in 3-D on TV.

B．The 3-D technology is based on the way the human ear and eye work.

C．All the people can have fun watching 3-D movies or TV for a long time.

D．3-D glasses make us see different pictures in each eye at the same time.

4.Why are some people against watching 3-D films? Because ____________.

A．they make them more excited or sadder

B．3-D glasses make the screen look darker

C．3-D films make all people get headaches

D．they dislike watching the Olympic Games