1 . The body gives off many gases. Although some smells may signal a need to bathe or that you ate a certain meal, other gases might point to serious disease. Now, researchers have come up with a system that uses earmuffs to catch the disease-signaling gases. Doctors could get the information as patients wear a set of earmuffs. Results could be ready within minutes.
“The ear is a good place to monitor,” explains Johnson, a biomedical engineer. The ear’s skin is fairly thin, he notes. So gases don’t have to travel far to get out of the blood and escape through skin pores.
To collect the gases, Johnson and his team selected earmuffs that make a tight seal with the head. These are the type people often wear to protect the ears from loud noise. His team made two holes in the muff covering one ear. A tube slowly pumped air in one hole. Another tube pulled air out of the second hole and sent it to a sensor.
In their tests, the team found that they could measure changes in the amount of alcohol coming from the skin of the ear. It could work much like a Breathalyzer that police use to test people for driving drunk. The team invited three men. Each had to avoid drinking alcohol for at least three days before taking part. Once in the lab, these men wore the earmuffs and sat for 10 minutes as the system recorded normal gas levels leaving their ears. Afterward, the men drank a big amount of alcohol. About 7 minutes later, the earmuff system tested out a rise in alcohol leaving the skin. After 50 minutes, alcohol levels reached the peak and continued falling until the test was over.
The team then measured other gases by changing out the sensor. With the right sensor, their earmuff system could test out disease. Later, they replaced the earmuffs with a one-eared version to make it a bit more comfortable.
Johnson imagines another possible benefit. The earmuff system could help doctors tell whether a child’s ear infections have been caused by bacteria or a virus. How? Each type of infection exudes different gases. That, in turn, could guide how doctors cure the disease.
1. What makes the ear a good place to monitor?| A．Its small size. | B．Its thin skin. |
| C．Its clean surface. | D．Its blood flow. |
| A．Sensors should be examined in time. | B．Drunk-driving tests were ineffective. |
| C．Serious diseases were difficult to identify. | D．Their system could be used to tell diseases. |
| A．Collects. | B．Gives off. | C．Cuts off. | D．Uses. |
| A．Politics. | B．Business. | C．Science. | D．Entertainment. |
| A．To see | B．Seeing | C．Seen | D．Having seen |
Young Chinese are fighting against society through a simple act of resistance: lying down. Examples of the “tangping”, or “lying flat”, way of life
“Tangping”
“Lying flat is my movement,” he
But as “tangping” gained
For Zhang in Wuxi, lying flat is not about giving up or withdrawing from society. “Many people want to lie down because 996 is too
4 . So this is it—senior high school at last! I’m not outgoing so I’m a little
I just had my first maths class at senior high school! The class was difficult,
This afternoon,we had our chemistry class in the science lab. The lab is new and the lesson was great, but the
What a day! This morning, I was
| A．annoyed | B．anxious | C．amazed | D．awful |
| A．friend | B．schedule | C．vacation | D．impression |
| A．talks | B．smiles | C．plays | D．comes |
| A．or | B．so | C．but | D．then |
| A．never | B．even | C．seldom | D．also |
| A．polite | B．outgoing | C．helpful | D．rude |
| A．man | B．male | C．guy | D．female |
| A．test | B．experiment | C．check | D．job |
| A．quiet | B．loud | C．calm | D．peaceful |
| A．sorry | B．worried | C．frightened | D．convinced |
| A．sad | B．confused | C．satisfied | D．awkward |
| A．senior | B．college | C．junior | D．primary |
| A．explain | B．explode | C．explore | D．exchange |
| A．certain | B．confident | C．difficult | D．surprised |
| A．nervous | B．common | C．special | D．great |
The Amazon Rainforest is home to a great variety of plant life;
6 . Anger is a natural feeling that everyone experiences in life. Some researchers believe the first sound a baby makes when born could be a sign of anger. Anger may be the first feeling we have and respond to. It’s in many cases a perfectly healthy feeling. Anger can cause people to make very positive changes in their lives. Sometimes we have to be angry at injustice (不公正), at wrong doings, or even at nature, before we can do what needs to be done to correct wrongs or make things better. But of course, that is not how we usually think of anger.
Most people think of anger as a feeling we must keep under control. Children are sometimes sent to their rooms or punished for expressing anger in an uncontrolled way. Parents tell a child to control himself when the child shows anger. We may be angry with friends or at work, but we know it’s not right to show it. Very early in life, we learn that anger is something that must be controlled.
We learn this for a good reason. Uncontrolled anger can lead to fights, car accidents, bad relationships with others, unacceptable social behavior, and many other problems. However, many experts say that if one suppresses his anger, he may suffer serious mental and physical health problems. So what can we do to understand and calm this feeling?
One solution is to talk about it with someone we trust, for example, a good friend. We can also try to walk away from a situation that causes anger, ask a doctor for advice, or just exercise more in our daily life. And of course we may have many other methods. Whatever solution we choose, as long as we are trying to find the solution to the problem, we have already taken the first step in the right direction.
1. According to Paragraph 1, anger can _____.| A．lead to justice | B．keep us healthy |
| C．help us tell right from wrong | D．help us make things better |
| A．We are taught to control anger. |
| B．Anger appears early in life. |
| C．We shouldn’t get angry at work. |
| D．Angry children should be punished. |
| A．holds in | B．takes in | C．expresses | D．understands |
| A．Excellent physical health. |
| B．A talk with a close friend. |
| C．Some exercises given by teachers. |
| D．A good relationship with others. |
| A．Anger shown by children is unacceptable. |
| B．Anger leads to deadly mental and physical illnesses. |
| C．Anger can be a healthy feeling and need be treated properly. |
| D．Anger builds up relationships with our friends or workmates. |
7 . A new interactive (互动的)map shows which parts of the world have been hit hardest by climate change. The map, called ClimateEX, allows users to see how global warming (全球 变暖)influences temperature and rainfall across the Earth.
The map shows, in the UK, areas of eastern Scotland have been most influenced by climate change. In the US, the west coast has seen a rise in temperature and loss of rainfall. The map also shows that over the next 50 years parts of Wales and northeast England will see big changes to their climate.
Developed by a scientist at the University of Cincinnati, the map uses 50 years of public climate data from 50, 000 international weather stations around the Earth. It shows not only how the climate has changed, But also what will possibly happen by the year 2070.
According to the map, over the next 50 years Central America will be subject to terrible heat and rainfall. Papua New Guinea, southeastern China, the west coast of the US, Greenland and the Arctic are also easily influenced, most importantly for sea level change.
ClimateEX can also help users search for places where climate change may lead to extreme phenomena (现象)in the future. The user simply touches the place where storms are frequent at present on the map and then ClimateEX will show all the places where storms are likely to happen in 50 years.
1. A rise in temperature and loss of rainfall have happened in ____.| A．the US | B．China | C．Papua New Guinea | D．the UK |
| A．setting up weather stations | B．recording rainfall |
| C．measuring the sea levels | D．using past climate data |
| A．cause | B．suffer | C．avoid | D．change |
| A．reduce the influences of climate change |
| B．change the climates of different countries |
| C．show where extreme climates will happen |
| D．suggest how people deal with climate change |
| A．Increasing Rainfall | B．An Amazing Map |
| C．A Map of the World | D．Changeable Climate |
Yoghurt
It was a rough week. The price of oil skyrocketed as the temperature dropped sharply in Maine. We were looking at a high of eight degrees that week, and I had missed three days of work so my paycheck was going to be lower than normal. I was stressed, to say the least. I shopped strategically, looking for every possible way to cut pennies so I could buy groceries and keep the house warm.
My eight-year-old son didn't understand when I told him we were struggling that week. He wanted a special kind of yoghurt, but I didn't have the extra three dollars to buy it for him. It was the kind of yoghurt with a cartoon kid riding a skateboard on the front of the box, and a mere two spoonfuls in each cup. It was the kind of product that wastes a parent's money and makes me hate advertising.
I felt guilty as a parent when those big eyes looked at me with confusion, as if to say, “It's just yoghurt. What's the big deal?” So I found a way. I put something back as single mothers often do. He got his yoghurt.
On the way driving back from the grocery store, I noticed a homeless man holding a sign by the side of the road. My heart hurt, and I tried not to look at him. I watched people stay away from him on the street and walk by without even meeting his eyes. My son didn't seem to care much, either. I looked at the man closely then — bare hands grasping a piece of cardboard, snot frozen to his face, a worn-out jacket. And there I was struggling because I had to buy oil and groceries. But I decided to help. I pulled over to the man and handed him a five-dollar bill.
Paragraph 1:Seeing this, my son became confused and surprised.
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Paragraph 2:
On that day, my son performed an act that most adults wouldn’t have done.
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________| A．satisfying | B．energetic | C．absorbed | D．incredible |
10 . City life is cool: but is country life cooler? The answer is yes. As cities grow ever bigger, lots of people would like to leave their city and live in the countryside.
The English countryside has a classic image. People imagine that life in the countryside is slow and calm; that people have more space and most houses have gardens; that there are no traffic jams, no pollution, and no crime.
People in Britain want to live in the countryside. It is causing problems in some rural areas. People live in the countryside and work in the city.
| A．Where are the people going? |
| B．In some places, this is true; but in others it is not. |
| C．So they travel long distances each day to go to work. |
| D．The population of British cities has been falling for years. |
| E．Besides, lots of young people say that life in the countryside is boring. |
