At age 61, identical twins Jeanne and Susan no longer look exactly alike. Susan smoked for many years and is an admitted sun worshipper, whose habits Jeanne does not share. A new study of twins suggests you can blame those coarse(粗糙的)wrinkles, brown or pink spots on too much time in the sun, smoking, and being overweight.
Because twins share genes, but may have different exposures to environmental factors studying twins allows an “opportunity to control for genetic susceptibility(易受影响性),” Dr. Elma D. Baron, at Case Western Reserve School of Medicine in Cleveland, Ohio, and his colleagues explain in the latest issue of Archives of Dermatology.
Their analysis of environmental skin-damaging factors in 65 pairs of twins hints that skin aging is related more to environment and lifestyle than genetic factors.
But when it comes to skin cancer, the researchers say their findings support previous reports that both environment and genes affect skin cancer risk.
Baron’s team examined facial skin of 130 twins, 18 to 77 years old, who lived mostly in the northem Midwest and Eastern regions of the US, who were attending the Twins Days Festival in Ohio in August 2002. At this time, each of the twins also separately reported how their skin burned or tanned(晒黑)without sunscreen, their weight, and their history of skin cancer, smoking, and alcohol drinking. The study group consisted of 52 fraternal(异卵双生)and 10 identical twin pairs, plus 3 pairs who were unsure of their twin status.
From these data, the researchers noted strong ties, outside of twin status, between smoking, older age, and being overweight, and having facial skin with evidence of environmental damage. By contrast, sunscreen use and drinking alcohol appeared related to less skin damage.
Baron and his colleagues say the current findings, which highlight ties between facial aging and potentially avoidable environmental factors—such as smoking, being overweight, and unprotected overexposure to the sun’s damaging rays—may help motivate people to minimize these risky behaviors.
67．Which of the following is true according to the passage?
A．Jeanne and Susan share all the habits including smoking.
B．Skin aging is related more to environment and lifestyle than genetic factors.
C．Only identical twins can take part in the research.
D．Sunscreen use cannot help people have less skin damage.
68．Why did Baron’s team do the research on twins?
A．Twins are more likely to suffer from skin cancer.
B．It may guarantee the research is not influenced by genetic factors.
C．It gives others an opportunity to control twins’ genes.
D．It helps find twins are exposed to different environments.
69．What can you infer from the last paragraph?
A．This research makes people aware of dangerous lifestyles.
B．The environmental factors are unavoidable.
C．Being exposed to the sun is absolutely damaging.
D．There is little relationship between skin aging and environment.
70．The passage is mainly concerned with___________
A．skin cancer and environment
B．identical twins research
C．aging skin and environmental factors
D．genes and lifestyles
I Don’t Think I Wrote Wrong
Lao Yang was born in a small town. He liked reading when he studied at school. He thought the writers were respected(尊敬) and could get a lot of money. He wrote a lot of stories and posted them to the editorial departments (编辑部) but didn’t receive any answers.
Now he works in a factory. He’s busy at work. When he’s free, he always reads something. He always remembers he hoped to be a writer when he was young. One day, Xiao Ping, his ten-year-old daughter, came back. She looked worried and didn’t eat anything. She said Miss GAO, her Chinese teacher, told them to write a solicit article(征文) “My Father” that evening. But she did not know what to write.
“That’s easy,” said Lao Yang. “Let me help you.”
Then he sat down to write the solicit article at once. He easily finished it on time. He was sure Miss GAO would like it. But one afternoon he asked his daughter if the article had been chosen to post to the editorial department.
“My teacher said your article digressed from the subject(离题),” said the girl.
“I don’t think so,” Lao Yang shouted angrily. “I described(描写) just my father!”.. Lao Yang wrote a lot of stories because _______.
| A．he likes reading |
| B．he learned much at school |
| C．he wanted to be a writer |
| D．he wanted to help others |
.. Lao Yang posted the stories to the editorial departments, _______.
| A．and he got a lot of money | B．and he became a famous man |
| C．and he was respected | D．but he failed |
.. As _______, Lao Yang decided to help his daughter.
| A．he was a writer |
| B．he was free |
| C．he wanted to realize his ideal(理想) |
| D．he wanted to make his daughter happy |
. Lao Yang hoped _______.
| A．his article could surprise the teacher |
| B．his article could be chosen |
| C．the children could like his article |
| D．everyone could soon know him |
.. Lao Yang’s solicit article digressed from the subject _______.
| A．because he couldn’t write it at all |
| B．because he didn’t know his father well |
| C．because it was too bad to be chosen |
| D．just because he described his father |
Cities in Europe and around the world may be growing “bike trees” in the near future. Invented by Japan’s JFE engineering Corp., the invention proved useful in the busiest parts of this nation’s crowded cities.
Local governments of Japan have struggled for ways to encourage people to park their bikes considerately, particularly close to big stations, but that may block some roads and entrances to home and businesses. “Our cities do not have a lot of space for any kind of parking, including bicycles.” said Mitsuharu Oshima, a spokesman for JFE Engineering. The bike tree comes in two types; one in a tower that is above ground, and on the contrary, the other in a subterranean structure.
A cyclist registers（登记）with the operator of the equipment, pays a monthly fee and pushes the wheels of his bicycle into restraints at the base of the bike tree. Each bicycle is fitted with an electronic card with the owner’s details. A mechanical arm then pulls the bike into the base of the tower and moves it to a free location inside. To collect the bike later, the cyclist puts his card through a reader and his bike is automatically (自动地)returned to him in seconds. “The science of the equipment has been difficult----even though they may look simple ----because bikes come in many different shapes and sizes.” said Oshima.
As well as clearing away the road, bicycles cannot be stolen from a bike tree. There are presently versions at seven sites in Japan and two others are under construction, while work is under way on an even larger version----with room for 9,400 bicycles---in Thailand. And Oshima believes that the idea could catch on in Europe, particularly in countries such as France, Holland and Denmark, where cycling is so popular. What is the right order of the following things when you use the bike tree?
① the wheels of the bicycle are put into restraints at the base
② the card is read and the bike is automatically returned
③ an electronic card with the owner’s details is given
④ the bike is pulle
d and moved to a free location inside
| A．③②①④ | B．②①④③ | C．③①④② | D．②④③① |
What made it difficult to design “bike trees”?
| A．The location of “bike trees” |
| B．The differences of the bikes |
| C．The method of finding enough bikes |
| D．The importance of traffic safety |
From the passage, we can know that___________.
| A．cyclists can use “bike trees” for free in Japan |
| B．there are seven “bike trees” used for holding bikes in Japan |
| C．local government of Japan encourage people to ride bikes |
| D．countries with many cyclists in Europe will like the idea of “bike trees’ |
Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of areas for burying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to connect packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realise just how much unnecessary material we are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.What does the underlined phrase “that over-consumption” refer to?
| A．Using too much packaging. |
| B．Recycling too many wastes. |
| C．Making more products than necessary. |
| D．Having more material than is needed. |
The author uses figures in Paragraph 2 to show _______.
| A．the tendency of cutting household waste |
| B．the fact of packaging overuse |
| C．the rapid growth of supermarkets |
| D．the increase of packaging recycling |
What can be inferred from Paragraph 4?
| A．Unpackaged products are of bad quality. |
| B．Supermarkets care more about packaging. |
| C．It is improper to judge quality by packaging. |
| D．Other products are better packaged than food. |
What can we learn from the last paragraph?
| A．Needless material is mostly recycled. |
| B．Fighting wastefulness is difficult. |
| C．People like collecting recyclable waste. |
| D．The author is proud of their consumer culture. |
When you have a question about something, where do you go? For many people the answer is simple as they can go online to a search engine like Google or Yahoo. But what about people in rural or underdeveloped areas who may have no way to get on the Internet?
A business and international development professor in California, Rose Shuman, found an answer for them: Question Box. Question Box is a service that provid
es answers---free of charge--- for people who cannot search the Internet directly. The users of Questions Box might be those who might not be 
able to read, or simply have no access to the Internet.
Question Box began three years ago in India. People used a metal call box with a push-to-talk button to connect a live operator. Rose Schuman explained,” You just need to push a big green button on the box which will connect you directly to our operators who are sitting in front of computers, and speak your language. You can ask them any sort of question you want, and they’ll look it up in English or in Hindi, or whatever the main language is, and translate the answer back for you.”
The service is currently offered in two villages. The latest version of the box uses mobile phone technology, and solar panels in case the electrical power fails. Rose Shuman says the aim was to make the box as easy as possible for users, “It is very efficient (效率高的). Rather than try to bring a lot of difficulties to them and expect them to spend a lot of time to learn how to use the Internet, the idea was to make a technology that even Grandma could use.”
In April 2009, Question Box was introduced to Uganda. Forty community workers with mobile phones connected villagers to call center operators in Kampala. The community workers went around telling people about the service. They wore T-shirts that said “Ask me.” But Internet service in Uganda proved slow and undependable. So Question Box teamed up with a local technology company to store information on a local server. That way, the researchers in Kampala could quickly search the database for answers. The best title for the passage is __________.
| A．Question Box ----taking the place of the Internet |
| B．Needing an answer? ----asking Question Box |
| C．Question Box ----A great invention in the world |
D．Rose Shuman----- A professor helping the poor |
In Rose Schuman’s opinion, the greatest advantage of Question Box is that______.
| A．It is the most advanced in the world |
| B．It is more convenient to carry. |
| C．It is much easier to use |
| D．it saves much more energy |
The underlined word “them” in the fourth paragraph refers to______.
| A．the users | B．the operators |
| C．the researchers | D．Question Box workers |
What can we know from the passage?
| A．Question Box costs the users much less than the Internet. |
| B．Question Box operators can look for information in any language. |
| C．Question Box is more efficient in solving problems in underdeveloped areas. |
| D．Question Box can work without the help of the Internet in Uganda. |
In most people’s opinion, the tiger is not an animal that we would ordinarily think of as being chicken. However, one tiger, which lives in an English zoo, turned out to be more cowardly( 胆小的) than his keepers could ever have imagined.
Tanvir, a two-year-old Bengal tiger, got stuck at the top of a new 5m-high activity tower in the zoo, after climbing it for the first time.
The wooden tower had been designed to provide mental exercise for Tanvir by testing his ability of dealing with troublesome situations, but after climbing it in just a few seconds, he lost his courage when it came to coming back down. Tanvir went on to spend nearly two days at the top of the tower trying to collect the courage to attempt to get down.
A spokesperson for the zoo said that several days before Tanvir had taken half an hour to get down a lower tower only 1.5m high, and the taller tower had clearly been too much challenging for him.
“Every time he got to the edge, he looked out, put a paw over, and thought, ‘no, I cannot make it!’”laughed Samantha Cordrey, Tanvir’s keeper. In the end Tanvir’s hunger defeated his fear, and after almost 48 hours he made his way down. Burying himself in a big meal just like a hungry pig, Tanvir seemed to forget such a shameful experience for a while.
It appears that his experience would not be the worst in Tanvir’s life if he continued to act like a chicken. It is not known whether he will take courage to go back up his exercise tower again.
The whole episode(插曲) only serves to show the difficulties faced by zoo staff in creating environments that will improve animals’ living ability in enclosed space.When speaking of Tanvir’s shameful experience, Samantha Cordrey might feel it was_____.
| A．funny | B．surprising | C．exciting | D．unbelievable |
What made Tanvir get down the 5m-high activity tower at last?
| A．The coldness of the weather. | B．The direction from his keepers. |
| C．The sufferings of being hungry | D．The fear of being alone |
Why d
oes the author say “this experience would not be the worst in Tanvir’s life if…”(Paragraph 6)?
| A．Because Tanvir’s keepers will design more difficult exercise for him. |
| B．Because Tanvir is so cowardly that he has little courage to meet greater challenges. |
| C．Because Tanvir’s bad health will bring him much trouble in practice. |
| D．Because Tanvir is always careless and often causes trouble by accident. |
The zoo designed the 5m-high activity tower to______.
| A．make Tanvir become brave |
| B．improve Tanvir’s performance skills |
| C．let tourists watch Tanvir better |
| D．improve Tanvir’s living ability |