Satellites(卫星) are an important part of our ordinary lives．For example, the information for weather forecasts is sent by satellite．Some satellites have cameras which take photographs of the Earth to show how clouds are moving．Satellites are also used to connect our international phone calls．
Computer connections of the World Wide Web and Internet also use satellites. Many of our TV programs come to us through satellites．Airplane pilots also sometimes use a satellite to help them find their exact location．
We use satellites to send television pictures from one part of the world to another．They are usually 35，880 kilometers above the equator（赤道）．Sometimes we can see a satellite in the sky and it seems to stay in the same place．This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates．A satellite must orbit the Earth with its antennae(天线)facing the earth．Sometimes, it moves away from its orbit（轨道），So there are little rockets on it which are used to put the satellite back in the right position．This usually happens about every five or six days．
Space is not empty! Every week, more and more satellites are sent into space to orbit the Earth．A satellite usually works for about 10-12 years．Satellites which are broken are sometimes repaired by astronauts or sometimes brought back to Earth to be repaired．Often，very old or broken satellites are left in space to orbit the Earth for a very long time．This is very serious because some satellites use nuclear power and they can crash（撞）into each other．
【小题1】Which of the following is NOT done by satellites according to the passage?

A．Sending information for weather forecast．

B．Taking photographs of the Earth．

C．Sending TV pictures．

D．Providing food for airplane pilots．

【小题2】What’s the speed the earth rotates at?

A．35,880 kilometers per hour．

B．335,880 kilometers per hour．

C．11,000 kilometers per hour．

D．110,000 kilometers per hour

【小题3】Why does the satellite move around the world at the same speed as the Earth rotates?

A．In order to take photographs．

B．In order to stay in a certain position in the orbit．

C．In order to move away from its orbit．

D．In order to send television pictures．

【小题4】What does the underlined word “This” in the 3rd paragraph refer to?

A．A satellite．

B．A little rocket．

C．A satellite seems to stay in the same place in the sky．

D．The satellite puts the rockets in the right position．

   We all know the keys to living longer：eating healthily，exercising daily，and avoiding bad lifestyle habits，but do you know that practicing these simple steps when you’re 50 and older can add more years to your life？

According to a new research conducted by Harvard University scientists，adults who follow five healthy habits which include never smoking，maintaining a body mass index（BMI）（体重指数）below 30，exercising for at least 30 minutes a day，drinking alcohol only reasonably，and following a well-balanced diet，can add a decade or more to their lifespan.

The study，published in the American Heart Association’s journal Circulation，suggests that men over age 50 who follow these five lifestyle habits can add up to 12 years to their lives while women who follow these healthy habits can add 14 years to their lifespan. While the method of living a longer and healthier life hasn’t changed much over the years，this new information regarding the benefits of working out and eating healthily later in life is a bit of a breakthrough in terms of how we look at aging.

Modern medicine often treats the elderly with a more reactive approach，focusing on discovering and creating medicines and therapies to combat（防止）life-threatening illnesses like cancer and especially heart disease. According to scientists who conducted this study，the focus should be on preventative（预防的）measures，making sure aging adults are adapting healthy habits before they reach a stage in life when health issues normally arise.

It is very important to put prevention through diet and lifestyle changes first. Heart disease and cancer are the leading causes of death in the United States，while heart disease in particular can arise because of certain lifestyle habits. One of those habits is smoking，which scientists said was the biggest determining factor in a person’s lifespan. Researchers found that there was a direct connection between an adult’s risk of early death and his lifestyle habits，with those following all five of the healthy habits enjoying significantly longer lives.

【小题1】What is the question in the first paragraph intended to do?

A．To provide some advice for readers.

B．To predict the following paragraphs.

C．To introduce the topic of discussion.

D．To offer some background information.

【小题2】What is the most important in fighting against life-threatening illnesses?

A．Developing new therapies.

B．Discovering new medicines.

C．Applying effective prevention.

D．Following a well-balanced diet.

【小题3】Which of the following is the biggest threat to a person’s lifespan?

A．Smoking.	B．Lack of exercise.
C．Drinking heavily.	D．Unbalanced diets.

【小题4】What is the text mainly talking about?

A．A healthy lifestyle determines humans’health.

B．Healthy lifestyles help the older lengthen their lifespan.

C．How to live a healthy lifestyle.

D．Bad lifestyles increase people’s risk of early death.

   Skywriting is a form of advertising in which a pilot is bound to spell out a brief slogan or catchphrase in letters formed by smoke. In general, a customer would choose a specific place and time for the skywriting to appear. The message would only last as long as winds are relatively calm and the sky is clear. Single plane skywriting has largely been replaced by multi-plane "skytyping" , a computer-controlled method involving puffs of smoke from a row of aircraft.

The first official skywriting show took place over New York City in November of 1922. A skywriting pioneer and Royal Air Force（RAF）pilot named John Savage sat with the president of the American Tobacco Company, George Hill, as a fellow RAF ace pilot named Captain Cyril Turner flew into position over New York City. Captain Turner spelled out "HELLO USA CALL VANDERBILT 7200" in white smoke. Over47,000 people called the number, which happened to be the Vanderbilt Hotel where George Hill was staying. Hill became convinced that the skywriting advertisements would work well to promote his Lucky Strike cigarettes.

Skywriting continued to grow in popularity as both an advertising medium and a personal message service. Customers could request anything from "Eat at Joe's" to "Will You Marry Me？"Messages and slogans would naturally have to remain short, but even a simple phone number could produce a lot of curious potential（潜在的）customers for a small investment.

The development of the national highway system after WW Ⅱ spelled the beginning of the end for the skywriting industry. Instead of posting a few words in the sky, advertisers could now fill entire billboards with all sorts of pictures. Thousands of captive audience would pass by these new advertising signs every day, unlike the precious few who would come across a typical skywriting message. Many aerial（空中的）advertising companies turned to permanent banners（横幅）pulled behind low-flying aircraft instead.

Some skywriting is still performed today, although only a select number of pilots have the skills necessary for the job.

【小题1】What do we know about skywriting？

A．It is made up of smoke and clouds.

B．It is performed by computers at present.

C．It appears where the pilot wants.

D．It is a kind of ad made in the sky.

【小题2】The third paragraph suggests that skywriting ________.

A．satisfied all of the needs of customers

B．was an effective advertising style

C．appealed to few customers

D．ended up with a message service

【小题3】Why did advertisers give up skywriting？

A．Because skywriting was too expensive to advertise.

B．Because planes were greatly reduced after WWⅡ.

C．Because billboards could attract more audience.

D．Because it wasn't easy to do such a thing.

【小题4】What might be the most suitable title for the passage？

A．Why people need skywriting

B．How to do skywriting

C．When it is good to do skywriting

D．What skywriting is

   Ask most people anywhere in the world what they want out of life and the reply will probably be“to be happy”. Ed Deiner，an American psychology professor，has spent his whole life studying what makes people happy，comparing levels of happiness between cultures and trying to find out exactly why we enjoy ourselves.

Many people would say that this question does not need an answer. But Professor Deiner has one anyway. “If you’re a cheerful，happy person，your marriage is more likely to last，and you’re more likely to make money and be successful in your job. On average，happy people have stronger immune systems（免疫系统），and there is some evidence that they live longer. ”

So who are the world’s happiest people？It depends on how the word is defined. There is individual（个人的）happiness，the sense of joy we get when we do something we like. But there is also the feeling of satisfaction we get when we know that others respect us and approve of how we behave. According to Professor Deiner，the Western world pursues individual happiness while Asia prefers mutual satisfaction.

“In the West，the individualistic culture means that your mood matters much more than it does in the East. People ask themselves if they are doing what is fun or interesting. They become unhappy when they can’t do any of these things. If you ask people from Japan or China whether they are happy，they tend to look at what has gone wrong in their lives. If not much has gone wrong，then they are satisfied. ”

“People from Spain and other Spanish-speaking countries have the happiest culture，”Professor Deiner found. “The biggest cultural difference is to do with pride and shame. Hispanic cultures report much more pride and much less shame than others. ”

Income（收入）also makes a big difference to people’s happiness，but only at the lowest levels. Average income earners in the US are much happier than people in poverty. But millionaires are only a little bit happier than people on average incomes. It seems that money makes us happy when we have enough to feel safe.

【小题1】According to the passage, happy people enjoy the following except _______.

A．a long marriage	B．career success
C．better health	D．respect from others

【小题2】What can be inferred from the fifth paragraph?

A．Hispanic cultures put stress on pride and shame.

B．Spanish people take too much pride in themselves.

C．Opinions towards pride and shame decide Spanish happiness.

D．If you are from Spain，you are the happiest.

【小题3】In the last paragraph，what does the writer want to tell us?

A．Poor people enjoy the same happiness as millionaires.

B．The higher income one gets，the happier life he lives.

C．Enough money can make us feel safe and happy.

D．Average income earners live the happiest life.

【小题4】What does the passage mainly discuss？

A．Cultural differences in happiness.

B．Reasons for happiness.

C．The happiest culture.

D．People’s opinions of happiness.

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Exposure to sunlight produces vitamin D in our skin. This is 【小题1】 we call vitamin D the “ sunshine vitamin”. Vitamin D is good 【小题2】 everybody. In fact, research shows this “sunshine vitamin” could help women with breast cancer live longer.

Breast cancer 【小题3】 (patient) who have high blood levels of vitamin D have a 【小题4】 (good) prognosis (预后) than women who don’t. Researchers found that these women had less aggressive cancers. They were also 30 percent less likely 【小题5】 (die) from the cancer or to get it again.

Besides fighting breast cancer, vitamin D helps the body in other ways. It controls how the body absorbs calcium. It also makes sure the body’s immune system works 【小题6】 (normal) .

Getting enough vitamin D 【小题7】 (be) important for the normal growth of bones. If you don’t get enough, you are at risk of developing osteoporosis, a disease 【小题8】 makes your bones fragile, brittle, or easy to break.

Vitamin D may help reduce your risk of developing heart disease, according to a 2008 study 【小题9】 (publish) in the journal Circulation. And, it may also help protect you against getting the flu.

Other studies have shown that vitamin D might help people 【小题10】 (suffer) from depression.