Teens For Planet Earth

This is a social networking site for teenagers who want to get involved in protecting our planet. They can connect with other green-minded teens, choose a project or create their own. Teens For Planet Earth encourages young folks to get busy in their own communities. They offer guidance on local projects with categories such as habitats, animals, water and education. Awards are given to active members.

Meez

At Meez, teens can create their own avatars(头像), rooms and virtual pets. It is a social community of creative people that combines avatars, virtual worlds and games. Meez offers contests and chat as well as homework help, a fashion central and a writers’ corner. A chat area for younger teens is available. Other areas are music, geek（极客）central, art and sports.

Cyberteens

Cyberteens is another cool site that celebrates the teen years. Here teenagers can find community, games, and news. There is a link called “creativity” where teens can share their poems, stories, photos and artwork. The “cool links” section offers a huge variety of options to the curious teens. This site also has surveys and helps with jobs and school work.

Student.com

Student.com is a resource site for teens and high school students. Its social network has over 900,000 members. Members earn points to win prizes just by browsing and they offer several multi-player games. Points are used to buy items at auction(拍卖会). Student.com is filled with useful information and articles.

1. What is Teens For Planet Earth aimed to?

A．Set up a project.

B．Give awards to teens.

C．Get young folks busy.

D．Give advice on local projects.

2. Which website offers assistance in jobs?

A．Teens For Planet Earth.

B．Meez.

C．Cyberteens.

D．Student.com.

3. What makes Student.com special among these websites?

A．It has the most members.

B．Teens can read articles on it.

C．It offers help on school work.

D．Teens can make purchases on it.

4. What can we infer about the websites mentioned in the text?

A．They provide game platforms.

B．They benefit teens in their social life.

C．They award outstanding teens.

D．They offer various study guidance.

I’m part of the Roots & Shoots program founded by Dr. Jane Goodall. The program is intended to make and promote positive changes in the world. As Dr. Goodall says, “What you do makes a difference, and you have to decide what kind of difference you want to make.”

In Bulgaria, where I live, homeless dogs are everywhere. Many people here turn a blind eye to them. But I cannot ignore the life of a street dog whenever I see one wandering in the street, looking for something to eat. That’s why I’m no longer a food waster. When I see wasted food, I always think of a hungry dog climbing to garbage bins, searching for food that people have thrown there. When eating in a restaurant, I’m not afraid to take leftover food to feed stray cats or dogs.

A week ago, I saw a homeless dog around the garbage bins. Immediately I knelt down, spoke to her softly and ran my hands over her. I could see that she had had puppies. I couldn’t imagine how she could have been able to care for them. Hours earlier, I’d bagged up a plate of leftover fish. As I unwrapped it, she wagged her tail and sniffed at it. She ate all the fish in no time.

It’s sad, isn’t it? I can’t understand why many of us waste so much and think little of it. These homeless animals have taught me that food is precious. Even when I don’t have leftovers with me, I’ll take the time to get something from the grocery store to feed them.

I know my power is small, so I hope that next time you see wasted food, do turn it into worthy food. You have the power to save a life!

5. The author uses what Dr. Goodall says to show__________.

A．how we can develop our business

B．why it is important to be great

C．why the program is popular globally

D．how we can change the world positively

6. What can be concluded from the text?

A．There are few homeless dogs where the author lives

B．The author takes homeless dogs home and raises them

C．Seeing homeless dogs makes the author never waste food

D．People throw food into garbage bins to feed homeless dogs

7. The author took the leftover fish with him to____________.

A．feed a homeless dog he met

B．eat it when he was hungry

C．look for more homeless animals

D．set an example to those who throw away food

8. The author wrote the text to ask us to__________.

A．value our food	B．treat dogs as our friends
C．save wasted food for homeless dogs	D．raise homeless dogs and cats

Hummingbirds(蜂鸟) are one of nature’s most energetic fliers and the only birds to hover(盘旋) in the air by relying on their strength alone.
Now scientists have found that it is the ratio(比值) of the bird’s wing length to its width that makes them so efficient. The discovery is helping experts compete with 42 million years of natural selection to build helicopters that are increasingly efficient.
David Lentink, an assistant professor at Stanford University in California, tested wings from 12 different species of hummingbirds, which he sourced from museums. He placed them on a machine used to test the aerodynamics(气力学) of the helicopter blades(桨叶). Professor Lentink’s team used the same machine to test the blades from an advanced micro-helicopter used by the UK’s army. They found that the micro-helicopter’s blades are as efficient at hovering as the average hummingbirds.
But while the micro-helicopter’s blades kept pace with the average hummingbird wings, they could not keep up with the most efficient hummingbird’s wing. The wings of Anna’s hummingbird were found to be about 27 percent more efficient than the man-made micro- helicopter’s blades.
While Professor Lentink wasn’t surprised at nature’s superiority, he said that helicopter blades have come a long way. “The technology is at the level of an average hummingbird,” he said. “A helicopter is really the most efficient hovering device that we can build. The best hummingbirds are still better, but I think it’s amazing that we’re getting closer. It’s not easy to match their performance, but if we build better wings with better shapes, we might match hummingbirds.”
Professor Lentink said that we don’t know how hummingbirds maintain their flight in a strong wind, how they navigate(确定方向) through branches, or how they change direction so quickly. He thinks that great steps could be made by studying wing aspect ratios-the ratio of wing length to wing width. Understanding these abilities and characteristics could be a benefit for robotics and will be the focus of future experiments.
9. What did the scientists find about hummingbirds?

A．Their wings are long and wide

B．They can hover in the air for a long time

C．The ratio of their wing length to wing width is very important

D．They are the most energetic flier in nature

10. Which is the right order of Professor Lentink’s research?
①Tested wings from different species of hummingbirds
②Got resources from museums
③Analyzed the results and drew a conclusion
④Tested the blades from a micro-helicopter

A．①②③④	B．②①③④
C．②④①③	D．②①④③

11. According to Professor Lentink, what will be the focus of future experiments?

A．To know how hummingbirds can fly in a strong wind

B．To know how hummingbirds change direction so quickly

C．To develop a new kind of helicopter

D．To study the secrets of hummingbirds

The 2016 Rio Olympic Games have come to an end. Without doubt, many Chinese sports fans sat in front of the TV and cheered our athletes on, hoping that they would get as many gold medals as possible.
But sometimes our desire for gold medals can result in the sadness of failure. When Liu Xiang, China’s track hero, pulled out of the Beijing Olympics due to injury, he greatly disappointed many Chinese sports fans.
But things are different now. In the 2016 Rio Olympic Games, we saw a healthier and more lenient Chinese attitude toward the sportspeople, fully in line with the Olympic spirit.
China didn’t win any gold medals on the first day. But, instead of criticizing the athletes who failed to finish on top of the podium (领奖台), the majority of fans were happy with their efforts. “Reacting in the right way when an athlete misses out on gold shows the maturity of a person, and is also a challenge for a country to face up to in the process of development,” commented CRI.
Swimmer Fu Yuanhui won fans’ hearts, even if she only won a bronze medal in the 100m backstroke final. Her fans on her Sina Weibo micro blog have increased 100,000 to over 6 million. Many sports fans appreciated her straightforward character and attitude toward competition.
“The warm support from Internet users shows that public attitude toward competitive sport and the Olympics have gotten to a higher level,” said an article in the People’s Daily.
12. From passage 2, what can we know about Liu Xiang?

A．He is still a famous athlete.

B．He didn’t complete his event in the Beijing Olympics.

C．The audience desired him little.

D．He was required to give up the competition.

13. What does the underlined word “lenient” mean in Paragraph 3?

A．unhappy	B．serious
C．complaining	D．tolerant

14. People like Fu Yuanhui because of her ________.

A．kindness to the fans

B．winning a bronze medal

C．attitude to competition

D．Weibo mirco blog

15. What does the author mainly want to tell us in this passage?

A．Learning how to face up to challenge.

B．Winning gold medals is important.

C．Changing attitude to athletes is a must.

D．Getting as many gold medals as possible.