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

The 18-meter-tall Rubber Duck arrived in Beijing on Friday. It was placed on waters in the International Garden Expo Park, where the Yongding River passes through.
The Rubber Duck exhibition was designed by Dutch artist, Florentijn Hofman. It was part of the activities of Beijing Design Week, which ran from September 26 to October 3 in 2013.
The Rubber Duck stayed in the park until September 23, then moved to the Summer Palace, a famous Beijing tourist spot, where it was on display until October 26.
The duck is made of over 200 pieces of rubber. It was guarded not only by staff, but also by 10 volunteers wearing yellow T-shirts and hats with a rubber duck logo.
Sun Yidong, a volunteer who guided visitors to the duck, said the art brought energy to the traditional Chinese park.
“Seeing the giant Rubber Duck makes me feel like I’m a kid again.” Sun said.
Because of the rain on Friday, there were not too many people coming to see it. The Expo workers said they expected more people to come and visit the duck on weekends.
Zhao Yan said she had been following news about the duck since 2007, when the duck began its journey.
“I even considered going to Hong Kong to see it. It’s great that the duck is in Beijing,” Zhao said.
Before arriving in Beijing, the Rubber Duck traveled to 13 cities in nine countries. “The aim of the Rubber Duck is simply to bring everyone back to their childhood again,” said Zeng Hui, a leader of the Beijing Design Week Organizing Committee Office. “It can be a toy for adults.”
根据材料内容选择最佳答案，并将其标号填涂在答题卡的相应位置。
【小题1】The Rubber Duck went to _______ after it left the International Garden Expo Park.

World Sleep Day，organized by the Would Sleep Day Committee of the Would Association of Sleep Medicine since 2008，is held on March 21 every year.
The aim of World Sleep Day is to celebrate the benefits of good and healthy sleep. Events involving discussions，presentations of educational materials and exhibitions take place around the world and online.
Sleep quality plays a key role in people’s health. Researchers say that there are a lot of advantages if we always get enough sleep. We can be smarter，thinner，healthier and more cheerful. Also we’re to have better skin，better memories and longer lives. When you lose even one hour of sleep for any reason，it will influence your performance the next day.
In general，adults are thought to need at least eight hours of sleep a night，but a recent survey found that，on workdays，only 21% of them really get a full eight hours of sleep，and another 21% get less than six. For teenagers，a healthy amount is about eight to nine hours per night. However，about 80% of high school students don’t get enough sleep because of their schoolwork or some bad habits.
27% of people throughout the world have sleep problems. Now there are over 80 kinds of sleep disorders，and most people know little about their danger. So，for our good life and work，it’s necessary for us to realize the importance of sleep and try to have a good sleep.
【小题1】 How long has World Sleep Day been celebrated so far？
 
【小题2】What is the purpose of World Sleep Day？
 
【小题3】 What will happen if we sleep one hour less than we should？
 
【小题4】Why don’t most high school students have enough sleep？
 
【小题5】 What suggestion will you make about our better sleep？（请自拟一句话作答）
 

After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered an Earth-sized planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid（液态）water. Scientists think there is a chance that the planet could have life.
The planet Gliese 581g goes around a star called Gliese 581, which is about 20 light-years from Earth. That is about 194 trillion（万亿）kilometres －500 million times farther away from us than the moon.
A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years. A human can’t live that long, but robotic explorers could make the job easier. However, our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark.
At present, scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the sight distance from its star to have liquid water. It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface.
Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes（望远镜）towards the planet and search for radiation（放射）. By studying the radiation, scientists would find out about the chemicals（化学物质）around the planet and discover it Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea if the planet has life or not. But it’ll probably be many years before we can do this properly.
People have been arguing about whether there is alien life on Gliese 581g. Any discussion about alien life is just guessing at this point, according to its discoverers.
【小题1】 What did scientists find in September 2010?