The whole body is covered with skin.The surface of the skin is dead(like the hair and the nails),but it is made from a living layer(层)just under the surface.The outside dead layers wear off(磨损)all the time,with new ones replacing them,and the body forms a totally new skin every three weeks.
The skin protects the body from the outside world and it passes information from the outside.It helps to keep water in the body and to keep the body at the same temperature.Becteria(细菌)can’t get in through the skin unless it is damaged.
If the weather is cold,the blood vessels(血管)in the skin squeeze down,or contract(收缩),so that as little blood as possible comes near the surface.This means that less warmth is lost to the outside.This makes the skin look pale,or even “blue”.At the same time,the hairs on the skin are pulled upright by tiny muscles.
When it is hot,the blood vessels expand(扩大),or get wider again,to allow plenty of blood to run near the surface of the skin.This helps the body to lose heat,and the skin may look red.At the same time,the sweat glands(汗腺)produce more sweat,which cools the skin.
If your skin has ever been numb(麻木的),you will realize how important the feeling from the skin is.Nerves(神经)in the skin are sensitive(敏感的)to heat and cold,sharpness,hardness and softness,wetness and dryness and pain.If one is not able to feel these things,which can act as warnings,he is likely to be burned,cut or hurt in other ways.
The colour of the skin depends on special colour cells(细胞).These are just below the top layers of the skin.They are needed as protection from some harmful ray of the sun.The stronger the sun is,the more important it is to have a dark skin.People with pale skins may “tan”(晒黑)in the sun.This happens when the body produces extra colour cells in the skin for protection.In the sun,the skin produces a vitamin(vitamin D)which is needed for strong bones.Which of the following statements is NOT true?
| A．Our hair and nails are dead like the surface of the skin. |
| B．There is skin all over our body. |
| C．The skin of our bodies will be completely different in three weeks. |
| D．The surface of the skin is made of a living layer. |
The second paragraph mainly tells us about______.
| A．the functions of the skin |
| B．the information from the outside |
| C．the water in the body |
| D．the temperature of the body |
Bacteria will get in through the skin______.
| A．when one’s skin is numb |
| B．when one is ill |
| C．when the skin is cut |
| D．when the sweat glands produce more sweat |
When the weather is cold,the skin will contract in order to______.
| A．allow more blood near | B．make the skin look blue |
| C．keep warmth | D．help the body lose heat |
The colour of the skin is determined by______.
| A．the rays of the strong sun | B．colour cells |
| C．top layers of the skin | D．vitamin D |
Many Chinese people are confused with the two nations: one is known for its cheese and watches; the other for IKEA and Volvo.
The problem largely stems from the fact that both nation’s names are written similarly in Mandarin---Ruidian(Sweden) and Ruishi (Switzerland)------which begin with the same symbol, according to the Swedish Consul General Victoria Liu in China.
In an effort to put an end to the mix-up, the Swedish and Swiss governments have launched a competition on a website, asking Chinese people to come up with funny ways to help differentiate the two countries. Submissions can be accepted as a blog post, cartoon, photo, short film or in any other format.
The winner with the best submission will receive a 12-day trip to Sweden and Switzerland and will be expected to report back on his/her impressions of both countries following the trip, the website states. Entries will be accepted until November 20.
The organizers have also devised a humorous campaign logo with objects and people associated with Sweden and Switzerland on separate maps of each country. Sweden’s map features meatballs, a Viking, as well as two male cartoon figures with a heart between them symbolizing gay marriage, which remains illegal in Switzerland. Switzerland’s map features cheese, the Alps and a picture of Roger Federer.
China may not be the only country struggling to tell Sweden and Switzerland apart. Residents of Spanish-speaking countries also fall victim to the confusion as Sweden is spelt “Suecia” in Spanish while Switzerland is called “Suiza”.
Sweden and Switzerland aren’t the only places that have caused confusion among people. Last month, , a British holidaymaker hoped to explore the architecture of the Alhambra Palace in Granada, Spain, but instead mistakenly caught a flight across the Atlantic to the tropical Caribbean island of Grenada following a confusing booking blunder. Earlier this summer, two US holidaymakers were flown to the wrong continent after an airline confused two airport codes.What can we learn about the competition launched by the two governments?
| A．The winner of the competition will receive a 24-day trip altogether to both of the countries. |
| B．The winner will report his/her impressions on the two countries in his/her submission. |
| C．The competition is held among all people around the world. |
| D．The competition is held in order to stop people’s confusion about the two countries. |
Why does the author mention the British holidaymaker?
| A．To show us many people are confused by Sweden and Switzerland. |
| B．To prove airports make mistakes about people’s places too. |
| C．To explain Spanish-speaking people make mistakes too. |
| D．To prove many people are confused about some places. |
In which part of a newspaper could you probably find the passage?
| A．Tourism | B．News review | C．Business | D．Culture |
What does the underlined word “devised” mean?
| A．Compared. | B．Collected. | C．Invented. | D．Installed |
Many people may not believe it, but this is what is happening: polar bears are dying out! They are dying because they are losing a great deal of habitat due to human incursion（侵入）and global warming. They are dying because of starvation as well. With the sea ice they depend on for survival shrinking, it is becoming increasingly difficult for them to find food.
An ecosystem is highly dependent on all of its parts, and removing even a single species can result in serious consequences. Polar bears are at the top of the predators（捕食性动物）where they live. They play an important part in the ecosystem. They feed on seals, fish and deer. Several other animals depend on the kill of polar bears. The failure to save polar bears might result in loss of these predators.
In addition, all large predators perform a very important function in their habitat: helping to control the populations of other species. When an animal group loses its natural predators, its population will rise rapidly, having a direct result in population decrease of other groups. A huge boom in population of Arctic seals would have a direct effect on the prey(捕食) of seals, and could reduce numbers of certain types of fish.
This could also have a direct effect on humans, who might have to compete with Arctic seals for food supplies from fish. Lack of polar bears could eventually affect human food supply. Human beings shall save polar bears to ensure the food supply.
There is no doubt that we should save polar bears. However, there is still another question: can they be saved? This is a matter that scientists debate because of rapid degradation（恶化）of the polar bear’ environment in recent years due to warming temperatures. It is estimated that if the bears cannot adapt to changing climates, they might die out before the end of the 21st century, with about 50% of the animals disappearing by 2050. So time is running out!
There are some things that may help slow down global warming and help delay extinction of polar bears. These include finding new energy sources that don’t give off greenhouse gases and not making any more incursions into polar bear’s territory.Which is NOT the threat to the survival of polar bears according to the passage?
| A．Human’s killing. | B．Global warming. |
| C．Habitat loss. | D．Lack of food. |
Why do we need to save polar bears?
| A．For the predators in the ecosystem. |
| B．For the seals in Arctic Circle. |
| C．For our own source of food. |
| D．For our environment. |
If bears can’t adapt to changing climates, we will probably have lost _____ by the middle of the 21st century.
| A．half of polar bears |
| B．most of polar bears |
| C．90% of polar bears |
| D．all of polar bears |
We can infer that _____ .
| A．nothing can prevent the extinction of polar bears |
| B．drilling for oil in the Arctic should be encouraged |
| C．polar bears can surely adapt to changing climates |
| D．using solar energy is good for saving polar bears |
Bob was born in Cambridge. When he was in elementary school, he asked his mother to take him to parks in their community so he could collect empty soda cans to recycle. His mother agreed, as long as he saved part of the money he earned for college.
Bob’s mother remembers Bob as the most determined of her seven kids. Bob’s persistence paid off. On Friday, he will become the first person in his family, originally from El Salvador, to graduate from college. And he’s graduating with university honors.
For his honors thesis（毕业论文）he researched unmanned solar-powered airplanes, which BYU students have been building and testing for about 10 years. Bob’s study helps discover the best way to fly a solar-powered airplane so that it uses the least amount of power. The goal is to design and build an airplane that flies indefinitely. Bob’s thesis helps lay the foundation for this work.
“My parents were always diligent,” Bob said. “They often tell us hard work leads to success. ” Bob’s father taught him to read at the age of 3, and his mother is currently a student at Utah Valley University in a way to becoming a dentist.
Bob acknowledges he overcame some obstacles to get where he is. For starters, English is his second language. He also faced stereotypes（模式化的形象）. Although Bob never doubted that he would be a college graduate, other people assumed he wouldn’t because he didn’t come from a family of high income. There were other obstacles as well, but Bob viewed them all as opportunities.
Bob’s mother says she feels very happy and proud that her son is about to graduate with honors, and remembers the sacrifices he’s made to get there. “He has worked very hard. He started something, and now he has finished it,” Cathy says. “I have always told him, ‘If this is your dream, then you can get it! Keep working hard and you can get it!’”From the passage we can know that Bob’s honors thesis _____ .
| A．makes his mother feel surprised |
| B．helps to save the power of flying a solar-powered airplane |
| C．is done with BYU students |
| D．doubts the way of flying a solar-powered airplane |
According to the passage, Bob _____ .
| A．researched unmanned solar-powered airplanes for 10 years |
| B．paid for all his study by collecting empty soda cans |
| C．worked hard and has graduated from college |
| D．was affected by his family and has made some achievements |
People thought Bob couldn’t graduate from college because _____ .
| A．his parents had little money to support him |
| B．his teacher didn’t think he could graduate |
| C．he didn’t work hard on his study |
| D．he didn’t dare to face the obstacles for short of confidence |
It can be inferred that _____ .
| A．Bob’s mother is in a way to becoming a dentist |
| B．Bob’s mother works in their community |
| C．Bon’s father will graduate from Utah Valley University on Friday |
| D．Bob’s father learnt to read at the age of 3 |
Britain's most popular lie has been disclosed, with one in four people admitting using “sorry I had no signal" when returning a missed mobile phone call, a survey found.
Researchers found the average Briton tells on average four lies every day or almost 1500 every year. Almost one in six men admitted they were most likely to lie to their wife or girlfriend, on average at least twice a day. The most popular lie was saying you had no mobile phone signal, with one in four people admitting regularly using the little white lie. It usually came after they hit the “ignore" button when their mobile rang.
Three quarters of people think women are better liars. The research found 46 per cent of girls have been caught lying, compared to 58 of men.
The second most common fib is “I haven't got any cash on me” when asked for money by beggars and Big Issue sellers. “Nothing's wrong – I'm fine” came third followed by “You look lovely” and “Nice to see you”.
Modern technology turned out to have contributed to many lies with “I didn't get your text” in 18th, “Our server was down” in 20th and “My battery died” in 26th place. Other lies to make the top ten included “I'll give you a ring”, “We're just good friends” and “We'll have to meet up soon”. “I'm on my way” and “No, your bum doesn't look big in that” completed the top ten.
In many cases perhaps it is better to delight someone with a fib than destroy someone with the truth, according to a spokesman for OnePoll, which carried out the research of 4,300 adults. He added: ‘As a nation we just like trying to be nice and not upsetting people. Often little white lies can cover what we actually want to say. Most of these were considered completely harmless. ’“You look lovely” and “Sorry, I had no signal” ranked __________ on the popular-lie list.
| A．fourth and tenth | B．fourth and first |
| C．third and tenth | D．third and first |
What does the underlined part in Paragraph 4 mean?
| A．sentence | B．expression | C．excuse | D．lie |
How many lies does an average Briton tell on average every month?
| A．About 120 | B．About 360 |
| C．About 1,500 | D．About 4 |
Why do British people like telling lies, according to the spokesman for One Poll?
| A．Because truth will destroy others. |
| B．Because British people are very considerate. |
| C．Because it’s easier for others to understand lies. |
| D．Because lies were harmless. |
Learning a second language can improve brain power, scientists believe. US researchers from Northwestern University say bilingualism(双语) is a form of brain training — a mental "work out" that adjusts the mind finely.
Speaking two languages well affects the brain and changes how the nervous system reacts to sound, lab tests showed. Experts say the experiment performed by the National Academy of Sciences provides "biological" evidence of this.
In an attempt to prove the guess that speaking two languages is good for one's mind, the team monitored how the brain of 48 healthy student volunteers reacted to different sounds. Twenty three of these volunteers were bilingual.
The scientists used special equipment to trace the pattern of brainwaves. Under quiet, laboratory conditions, the bilingual students responded in a similar way to the English-only-speaking students, who formed the control group. But the bilingual group were far superior at processing sounds even when there were a lot of people talking in the room. They were better able to focus on to the important information — the speaker's voice — and block out other distracting noises.
Prof Nina Kraus, who led the research, said: "The bilingual's better experience with sound results in a hearing system that is highly efficient, flexible and focused in its automatic sound processing, especially in challenging or novel listening conditions."
Co-author Viorica Marian said: "People do crossword puzzles and other activities to keep their minds sharp. But the advantages we've discovered in double language speakers come automatically simply from knowing and using two languages.''
Musicians appear to gain a similar benefit when rehearsing(彩排), say the researchers. According to some theories, being bilingual might help avoid dementia（痴呆）.What’s the purpose for the lab test led by Prof Nina Kraus?
| A．To find how better the bilingual students can react to sound than other students. |
| B．Just to find scientific proof for a previous guess. |
| C．To show the students how good it is to learn a second language. |
| D．To find a way to prevent dementia. |
What does the underlined word “distracting” mean?
| A．tiring | B．exciting |
| C．interesting | D．disturbing |
What does Viorica Marian seem to believe?
| A．People should do crossword puzzles to keep their minds sharp. |
| B．Bilingual students have more advantages in study than non-bilingual ones. |
| C．Speaking two languages is an easier way for people to increase their brain power. |
| D．Bilingual students are better at solving crossword puzzles. |
What conclusion could be drawn from the passage?
| A．Being bilingual strengthens brain power. |
| B．Speaking a second language can change your nervous system. |
| C．Bilingual musicians perform better on stage. |
| D．The English-only-speaking students can concentrate easily. |
How was the bilingual group better at processing sounds?
| A．They were the control group. |
| B．They could better fix their attention on something of importance. |
| C．They were able to find the speaker’s voice quickly. |
| D．They had better nervous system. |