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.  
【小题1】Paragraph 3 mainly tells us __________.

We always want to prepare ourselves to the changes we may face when we go to a different country. Well, I have to say that for me, even after living in the US for one year and a half, I am still not used to the changes of weather, or how to manage my money well. There are many things that can give us culture shocks, but it is up to us whether to make it a big shock or a small one.
I know that changing schools was a big thing for me. It helped me to be stronger and open towards meeting new people.  Sometimes it feels like everybody is already in a group. This makes it harder for someone else to go in. But, it is not that hard. Actually many people know that you are from another country. They feel curious about your “history”, and would often think you are a different man.
Another thing that can produce a shock to me is the sudden change of weather. During the last couple of days, there was an ice-snow storm. It was the biggest in 15 years in the state of Missouri. It was raining ice, really, and you could hear sounds outside the window like little pieces of rocks hitting it, of course it was the ice. It started accumulating so heavily that the University had to close down for two days, and it got worse when it started snowing after the ice storm.
As international students, you may at times find something very difficult, but hey, anyone can beat and overcome it to make studying aboard an unforgettable experience.
【小题1】The author has been in the US for          .

We always want to prepare ourselves to the changes we may face when we go to a different country. Well, I have to say that for me, even after living in the US for one year and a half, I am still not used to the changes of weather, or how to manage my money well. There are many things that can give us culture shocks, but it is up to us whether to make it a big shock or a small one.

I know that changing schools was a big thing for me. It helped me to be stronger and open towards meeting new people.  Sometimes it feels like everybody is already in a group. This makes it harder for someone else to go in. But, it is not that hard. Actually many people know that you are from another country. They feel curious about your “history”, and would often think you are a different man.

Another thing that can produce a shock to me is the sudden change of weather. During the last couple of days, there was an ice-snow storm. It was the biggest in 15 years in the state of Missouri. It was raining ice, really, and you could hear sounds outside the window like little pieces of rocks hitting it, of course it was the ice. It started accumulating so heavily that the University had to close down for two days, and it got worse when it started snowing after the ice storm.

As international students, you may at times find something very difficult, but hey, anyone can beat and overcome it to make studying aboard an unforgettable experience.

1.The author has been in the US for          .

2.Changing schools        .

3.The underlined word “accumulating” means       in Chinese.

4.Which of the following is NOT mentioned to be a shock for the author when he studied in the US?

A. The big changes of weather.  

B. B.Managing money.

C.Changing schools.           

D.Difference in language.

5.What is the main idea of this article?