After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered a 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 spacec raft 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 right 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 if Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea whether 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?

A new study suggests that the more teenagers watch television, the more likely they are to develop depression (抑郁症) as young adults.

The researchers used a national long-term survey of healthy young teenagers of about 13—16 to find out the relationship between media(媒体) use and depression. They based their findings on more than 4000 young teenagers who were not depressed when the survey began in 1995.

As part of the survey, the young people were asked how many hours of television or videos they watched daily. They were also asked how often they played computer games and listened to the radio. Here was the result. The young people spent five and a half hours a day using media and more than 2 hours of that was spent watching TV.

Seven years later, in 2001, more than 7% of the young people had signs of depression. The average age at that time was 21. Brian Primack at the University of Pittsburgh medical school was the lead author of the new study. He says every extra hour of television meant an 8% increase in the chances of developing signs of depression.

The researchers say they did not find any such relationship with the use of other media such as movies, video games or radio. But the study did find that young men were more likely than young women to develop depression given the same amount of media use.

Doctor Primack says the study did not find out if watching TV causes depression directly. But one possibility, he says, is that it may take time away from activities that could help prevent depression, like sports and social activities. It might also prevent a person from sleeping well, he says, and that could have an influence.

The study was just published in the Archives of General Psychiatry.

In December, the journal Social Indicators Research published a study of activities that help lead to happy lives. Researchers from the University of Maryland found that people who describe themselves as happy spend less time watching television than unhappy people. The study found that happy people are more likely to be socially active, to read, attend social services and to vote.

阅读下面短文，用括号内所给动词的适当形式填空 (必要时可加情态动词或助动词)。
Many of us Chinese are Yao Ming’s fans. Of course we all know he 1     ( retire ) for several months . Yao made farewell(告别) conference Wednesday. He said he  2  (force )to make this decision by a series of foot and leg injuries. Yao played eight seasons in the NBA.
“Today is an important day for me and   3  (hold) a special meaning for both my basketball career and my future,”Yao said. “ I    4  (think) about my future for a long time. Today I am announcing a personal decision,   5  (end ) my career as a basketball player and officially retire. But one door is closing and another one   6  (open).’’
Yao said he   7   ( return) to work with his former Chinese team, the Shanghai Sharks, with the possibility of    8  (become) general manager. He already   9  (own) the club and wants to contribute more. He thanked a lot of people — his family, former coaches, even players like Shaquille O’Neal — “for making me a better player.’’
Rockets(火箭队) general manager Daryl Morey was among those attending the farewell conference Wednesday. “I would be sorry if I wasn’t here.” “It’s a big moment,’’ Morey added. “Yao had a sense of humor, a great attitude and sense of responsibility. I hope we 10  (continue) his culture in the NBA.’’

Once there was a girl in my class that I thought was beautiful and smart. I believed that she was perfect. When the time for my birthday came, I    56    her to my party, and she came.

A few months    57   , it was her birthday. I got a special scarf for her. Thinking about how happy she would be to receive my gift made me so    58 .

I asked her when her birthday party was going to be. She replied, "   59   do you want to know? You're not invited. You're just a dog with glasses !"

I felt really    60    when she said that. I just stood there looking at her. Everyone standing by her came to stand next to me. Then we all    61 .

That day, I figured out that even if someone looks perfect, there is a very good possibility that they aren't. When it comes to perfection, it's how someone treats you that is more 62 than how they look.

1.A. invited B. invites C. inviting

2. A. ago B. before C. later

3.A. excited B. sad C. relaxed

4.A. How B. Why C. Who

5.A. good B. nice C. bad

6.A. left B. came C. smiled

7. A. confident B. creative C. important

完形填空（共12分，每小题1分）
阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项
　　I had my first job at the age of thirteen, when a friend of my mother’s who owned a book shop hired（雇佣） me for six hours a week to help her in the shop. I was very 　1　 　to earn my own pocket money and my parents 　2　 　interfered（干涉）with how I spent it, even when I was spending it foolishly. They believed that by earning money, spending it, and learning from the 　3　 , I would become more mature（成熟的） and responsible about how to handle work, relationships with others, and money.
　　Like many American parents, my parents also let me and my brothers do things over which they 　4 　　a great deal. When I was sixteen, for example, after I finished high school and before I entered university, I wanted to spend the summer months traveling around Europe. My mother was against the idea of my traveling alone at such a young age, but my father felt that it would be a great 　5　 　for me. In the end, my father won the argument（争论） on the 　6　 　that I limited（限定）my traveling to France, my mother’s home, where I had many uncles, aunts and cousins spread out through the country who could 　7　 　shelter（住处）and help if I needed them.
　　Three years later, my younger brother decided to 　8　 　a year off after his first year in university and travel through the United States and the Caribbean. Again my mother was very worried and not eager to see my brother leave school, but my father encouraged him and my brother had a(n) 　9　 　year working his way on trains and ships to 　10 　　passage to different ports and cities, and discovering many fascinating places and people.
　　These kinds of experiences are probably rare（稀少的）for children in many countries but in the US they are fairly common. Most parents start 　11　 　their children at a young age to do small things by themselves. By the time they have finished high school, many American kids have already had part-time jobs, traveled around the US or other countries on their own, have selected the university they plan to attend and maybe even 　12　 　on their future career, and so on.