If you see a person carelessly throw a cigarette to the ground, what are you likely to think?
If you hate people throwing things on the ground, you might think, “That person shouldn’t litter.” If you are a smoker, you might think, “I would sure like a cigarette right now.”
Most likely, though, you are not thinking, “That unused cigarette butt could be used to make something amazing!”
That is, unless you are a creative scientist. If you are, you may see potential—a possibility—where others simply see trash（垃圾）. That is just what has happened in South Korea.
The spirit of invention can hit at the strangest times and in the most unusual places. In South Korea, it happened near a trash can.
Kin Gil-Pyo is with the Seoul National University. He says he saw people throwing away cigarette butts, which got him thinking. He began wondering if something useful could be made from them.
He and other researchers found a way to convert cigarette butts into materials required for high-performance batteries.
Kim Gil-Pyo says they looked closely at used cigarette filters（滤嘴）, the parts of cigarettes smokers put into their mouths. Filters are made of a material called “cellulose acetate（醋酸纤维素）.”
Mr. Kim explains that cellulose acetate can be made into another material: carbon. The pieces of cellulose acetate, known as fibers, are changed through a one-step burning process. After this, they are turned into an energy storage material.
But why use carbon? Carbon has many qualities that seem to make it the perfect material. Carbon has a high surface area. It conducts electricity well. It also stays stable, unlikely to change, for a long time. And carbon does not cost a lot. All these qualities make it the most popular material for making super-capacitors（超级电容器）.
Super-capacitors are good at storing energy. They have high-power mass, or density(密度). They require only a short time for recharging. And they have a long lifecycle. Super-capacitors are used in products such as laptop computers and cell phones. They are also used in industrial energy converters, like wind turbine machines.
Combining carbon and super-capacitors seems like a perfect marriage.
Kim Gil-Pyo tells the Reuters News Agency that cigarette butts could affect the economy is a huge way. They could prove to be a low-cost source of carbon material. They are so cheap that smokers throw them to the ground. And you don’t get much cheaper than that.What may people think seeing a person throw a cigarette to the ground?
| A．That all depends. | B．He should be blamed. |
| C．It causes them to smoke. | D．The butts can be reused. |
Filters can be made into a material that .
| A．is used as the battery surface |
| B．can be turned into electricity |
| C．is very easy and costs nothing |
| D．can hold electricity energy well |
Super-capacitors made from carbon .
| A．need quite a long time to recharge |
| B．are comparatively very expensive |
| C．can easily carry an electrical current |
| D．can save a large quantity of electricity |
The story tells the readers the truth that .
| A．where there is a will, there is a way |
| B．the most useless is usually the most useful |
| C．ideas usually hit at the most unusual places |
| D．one person’s trash is another person’s treasure |
It’s really true what people say about English politeness: it’s everywhere. When squeezing past someone in a narrow passage, people say “sorry”. When getting off a bus, English passengers say “thank you” rather than the driver. In Germany, people would never dream of doing these things. After all, squeezing past others is sometimes unavoidable, and the bus driver is only doing his job. I used to think the same way, without questioning it, until I started traveling to the British Isles, and here are some more polite ways of interacting with people in UK.
People thank each other everywhere in England, all the time. When people buy something in a shop, customer and shop assistant in most cases thank each other twice or more. In Germany, it would be exceptional to hear more than one thank you in such a conversation. British students thank their lecturers when leaving the room. English employers thank their employees for doing their jobs, as opposite to Germans, who would normally think that paying their workers money is already enough.
Another thing I observed during my stay was that English people rarely criticize others. Even when I was working and mistakes were pointed out to me, my employers emphasized several times but none of their explanations were intended as criticism. It has been my impression that by avoiding criticism, English people are making an effort to make others feel comfortable. This also is showed in other ways. British men still open doors for women, and British men are more likely to treat women to a meal than German men. However, I do need to point out here that this applies to English men a bit more than it would to Scottish men! Yes, the latter are a bit tightfisted.What is the author’s attitude towards English politeness?
| A．He thinks it is unnecessary. | B．He thinks little of it. |
| C．He appreciates it very much. | D．He thinks it goes too far. |
What can be inferred from the passage?
| A．German men never treat a woman to dinner. |
| B．The author think it’s unnecessary to say “thank you” to the bus driver. |
| C．In Germany, employers often say “thank you” to employees for their job. |
| D．Germans think it is unnecessary to thank workers because payment is enough. |
We can learn from the last paragraph that Scottish men ______.
| A．like to fight with each other |
| B．treat women in a polite way |
| C．are as generous as English men |
| D．are unwilling to spend money for women |
The author develops the text through the method of ______.
| A．making comparisons | B．telling stories | C．giving reasons | D．giving examples |
For the last couple of weeks, I had been stuck in front of my computer working on a project that was very important to me. My every waking hour was consumed by the project and although I imagined that I would feel happy after completing parts of the project, I was confused to find that instead, I was feeling rather depressed. I tried a range of methods to help cheer myself up. I had a relaxing bath, cooked a delicious meal to enjoy with my family and even watched a lighthearted movie, but to no avail. It was only when I turned to meditation for a solution that the answer came to me: turn to nature!
The very next day, I grabbed my camera and a bottle of water and set off to spend a few hours walking in a nature reserve, even though it was pouring with rain. Within a couple of minutes I felt alive again. To be honest, I felt like a young school girl again and had to stop myself from hopping along the path singing, "I'm singing in the rain", a song I used to sing when I was a child. I think as adults we often try too hard to control our inner children and as a result we restrain our own spirits, which only leads to depression and stress.
Interestingly, it has been shown that people who spend 40 minutes walking in a nature reserve have a drop in their blood pressure levels, but this does not happen when they spend a similar amount of time walking in a busy city centre.
If you feel a little low in spirit and know that you have spent too much time indoors, relax completely, remove your shoes and let your inner child come out and play.The author walked in a nature reserve in the rain in order to__________.
| A．take photos | B．find a solution to the project |
| C．hop along the path | D．cheer herself up |
The underlined part "to no avail" in Paragraph 1 probably means " __________.".
| A．unsuccessful | B．unrelated | C．uninteresting | D．unexpected |
In the author's opinion, __________.
| A．a bath can make people relaxed |
| B．depression is usually caused by hard work |
| C．walking in a busy city centre harms people's health |
| D．adults should express their inner feelings freely |
The last paragraph mainly serves as a(n) __________.
| A．explanation | B．suggestion | C．introduction | D．reminder |
Many years ago，when I was fresh out of school and working in Denver，I was driving to my parents’ home in Missouri for Christmas. I stopped at a gas station(加油站)about 50 miles from Oklahoma City，where I was planning to stop and visit a friend. While I was standing in line at the cash register(收款台)，I said hello to an older couple who were also paying for gas.
I took off，but had gone only a few miles when black smoke poured from the back of my car. I stopped and wondered what I should do. A car pulled up behind me. It was the couple I had spoken to at the gas station. They said they would take me to my friend’s. We chatted on the way into the city，and when I got out of the car，the husband gave me his business card.
I wrote him and his wife a thank you note for helping me. Soon afterward，I received a Christmas present from them. Their note that came with it said that helping me had made their holidays meaningful.
Years later，I drove to a meeting in a nearby town in the morning. In late afternoon I returned to my car and found that I’d left the lights on all day，and the battery(电池) was dead. Then I noticed that the Friendly Ford dealership—a shop selling cars —was right next door. I walked over and found two salesmen in the showroom.
“Just how friendly is Friendly Ford？”I asked and explained my trouble. They quickly drove a pickup truck to my car and started it. They would accept no payment，so when I got home，I wrote them a note to say thanks. I received a letter back from one of the salesmen. No one had ever taken the time to write him and say thank you，and it meant a lot，he said.
“Thank you”－two powerful words. They’re easy to say and mean so much.The author planned to stop at Oklahoma City ________.
| A．to visit a friend | B．to see his parents |
| C．to pay at the cash register | D．to have more gas for his car |
The underlined words “took off” underlined in Paragraph 2 mean “________”．
| A．turned off | B．moved off | C．put up | D．set up |
The battery of the author’s car was dead because ________.
| A．something went wrong with the lights |
| B．the meeting lasted a whole day |
| C．he forgot to turn off the lights |
| D．he drove too long a distance |
By telling his own experiences，the author tries to show ________.
| A．how to write a thank you letter |
| B．how to deal with car problems |
| C．the kind heartedness of older people |
| D．the importance of expressing thanks |
What is a lifestyle and how is that different from a life? A lifestyle is about brand names and buying identity or fame. Lifestyle gives a false sense of peace and acceptability that comes from others recognizing what you’ve bought into (as well as bought). If your car, clothes, and home are expensive, you’re sophisticated(世故的) and stylish. If you have the right kind of job or go to the right social gatherings, then you receive the insincere approval of others. This means that your self-esteem(自尊) is always at the mercy of others, with no appreciation of you as an individual.
A life, on the other hand, is very different. A life is what you lead when you know what matters most to you. It is very simple and comes from being connected to what you know is important and being willing to put that first, no matter what others may think. When you create a life vs. a lifestyle, your self-esteem comes from what’s inside you, not what others think about you.
Lifestyle is expensive financially and personally, because it costs a great deal to keep up appearances and do what you think is socially acceptable. A life is not expensive. Rather than using personal or financial resources, a life generates energy and staying power. It’s about liberating yourself from the mindless consumption that society expects. It is about making the choices that are in line with your values, instead of using up your bank account or energy for no heart-driven reason.
How can you make the change? Understand the difference between a life and a lifestyle. Analyze your current lifestyle to see what is costing you in money, time, stress, and energy to maintain it. Let go and make room for what is really important to you, what supports you and brings you joy. Remember who you are from within, not what you own!Which of the following examples best explains “what is life about”?
| A．We work long hours in a job that we do not enjoy. |
| B．We focus on what we wear, or what kind of car we drive. |
| C．We find out what our true beliefs and values are and choose to live by these. |
| D．We think that how others see us is more important than what we think of ourselves. |
What method does the author use to explain his opinion in the third paragraph?
| A．Making comparison. | B．Giving an example. |
| C．Giving a definition. | D．Giving a reason. |
To make the change, we need to______________________.
| A．be directed from within | B．be directed from outside |
| C．be driven by social values | D．be driven by others’ opinions |
What is the author’s purpose of writing this passage?
| A．To describe what life is. |
| B．To introduce what lifestyle is. |
| C．To promote life instead of lifestyle. |
| D．To tell the differences between life and lifestyle. |
Researchers claimed that waitresses who wear red get up to 26 percent extra in tips than they would wearing other colors. However, the team finds that the sexes tip very differently—with the bigger tips coming only from male customers.
No matter what color they wear, female diners will give the same kind of amounts for service every time. Yet men, whether they realize it or not, add anything between 15 and 26 percent more to a waitress in red than they would if it was the same waitress wearing a different color.
The test was simple. Take 11 waitresses in five restaurants over a six-week period and ask them to wear the same kind of T-shirt every day but change the colors. Previous research has suggested waitresses could earn more if they acted charmingly or wore more make-up than their colleagues. But this study, by the Journal of Hospitality and Tourism Research, only changed the color of the T-shirt. Every other aspect from make-up to behavior remained the same.
When wearing either black, white, green, blue or yellow T-shirts, the size of the tips from both male and female customers was almost identical. But when they wore red, the size of the tips went up by between 15 and 26 percent from male customers, yet stayed the same from female ones.
A total of 272 restaurant customers were studied by researchers Nicolas Gueguen and Celine Jacob for the international journal of the tourism industry.
Even as a T-shirt, it shows just how much the color red is thought, by men, to increase the physical and sexual attractiveness of woman, said the researchers.
The researchers wrote: As red color has no negative effect on women customers, it could be in their interest to wear clothes at work.The underlined word “identical” in Para. 4 probably means____________________.
| A．different | B．similar | C．the same | D．close |
According to the passage, in the research by the Journal of Hospitality and Tourism Research waitresses could earn more by _________________.
| A．wearing red T-shirts |
| B．putting on attractive make-up |
| C．changing the color of T-shirts |
| D．behaving themselves |
Which of the following is right according to the passage?
| A．Bright color can increase the physical and sexual attractiveness of women. |
| B．Waitresses in red make no difference to female customers. |
| C．Make-up makes no difference to man customers. |
| D．Whether male customers tips more or not depends on service. |
What is the main idea of the passage?
| A．People tip differently if waitresses wear different make-up. |
| B．Waitresses who wear red get more tips than they would wearing other colors. |
| C．Male customers are more interested in the red color. |
| D．Red color has no negative effect on female customers. |