It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many teens don't get enough sleep because they have too much homework, which keeps them up at night. Some teens cannot sleep at night even when they want to.
Studies show that during your teenage years, the body's biological clock is reset, telling you to sleep later at night and wake up later in the morning.
But changes in the body clock aren't the only reason teens lose sleep. Lots of people have insomnia (失眠). The most common cause of insomnia is stress. But all sorts of things can lead to insomnia. These include physical discomfort, emotional troubles and even sleeping environment. It's common for everyone to have insomnia from time to time. But if it lasts for a month or more go and see a doctor.
Some people have a condition that causes stomach acid (酸) to move backward towards the chest. This produces the uncomfortable, burning feeling called heartburn. So even if the person doesn't notice the feelings of heartburn because he is sleeping, he may feel tired the next day.
Most teens have nightmares sometimes. But, if they are frequent, a person's sleep pattern can be seriously affected. The most common cause of nightmares is emotional problems, such as stress (压力) or anxiety. If you have them a lot, it's a good idea to talk to a doctor.
Doctors encourage teens to make lifestyle changes to develop good sleeping habits. You probably know that coffee can keep you awake, but did you know that playing video games or watching TV does the same?
1. The main idea of the first paragraph is ________.
A. There is a problem that teenagers can’t get enough sleep.
B. Sleeping problems have different causes.
C. Yawning is a good way to get rid of sleep.
D. Teenagers care too much for homework.
2. The Teenagers’ biological clock ________.
A. easily makes teenagers lead to insomnia
B. is the origin of their insomnia
C. provides them with plenty of time at night
D. is helpful to improve their concentration(注意力)
3. What does the writer say about “nightmares”?
A. It is nothing and shouldn’t be taken seriously.
B. It can release their stress or anxiety.
C. Emotional problems are the only way to form nightmares.
D. People will suffer from sleep if frequent.
4. Which way can help to get rid of insomnia?
A. Drinking some coffee before going to bed.
B. Playing video game or watching TV from time to time.
C. Turning to a doctor for help.
D. Eating much medicine for insomnia.
The idea of being able to walk on water has long interested humans greatly. Sadly, biological facts prevent us ever accomplishing such a thing without artificial aid --- we simply weigh too much, and all our mass pushes down through our relatively small feet, resulting in a lot of pressure that makes us sink.
However, several types of animals can walk on water. One of the most interesting is the common basilisk Basilicus basilicus, a lizard（蜥蜴）native to Central and South America. It can run across water for a distance of several meters, avoiding getting wet by rapidly hitting the water’s surface with its feet. The lizard will take as many as 20 steps per second to keep moving forward. For humans to do this, we’ll need huge feet that we could bring up to our ears in order to create adequate “hitting.”
But fortunately there is an alternative: cornflour. By adding enough of this common thickening agent to water (and it does take a lot), you can create a “non-Newtonian” liquid that doesn’t behave like normal water. Now if the surface of the water is hit hard enough, particles（粒子）in the water group together for a moment to make the surface hard. Move quickly enough and put enough force into each step, and you really can walk across the surface of an adequately thick liquid of cornflour.
Fun though all this may sound, it’s still rather messy and better read about in theory than carried out in practice. If you must do it, then keep the water wings handy in case you start to sink --- and take a shower afterward!What do we know about Basilicus basilicas from the passage?
| A．It is light enough to walk on water. |
| B．Its huge feet enable it to stay above water. |
| C．It can run across water at a certain speed |
| D．Its unique skin keeps it from getting wet in water |
What is the function of the cornflour according to the passage?
| A．To create a thick liquid. |
| B．To turn the water into solid. |
| C．To help the liquid behave normally. |
| D．To enable the water to move rapidly. |
What is the author’s attitude toward the idea of human’s walking on water?
| A．It is risky but beneficial. |
| B．It is interesting and worth trying |
| C．It is crazy and cannot become a reality |
| D．It is impractical though theoretically possible |
According to the dictionary definition of "create "，ordinary people are creative every day. To create means " to bring into being, to cause to exist"-something each of us does daily.
We are creative whenever we look at or think about something in a new way. First, this includes an awareness （意识）of our surroundings. It means using all of our senses to become aware of our world. This may be as simple as being aware of color and texture（质地），as well as taste, when we plan a meal. Above all, it is the ability to notice things that others might miss.
A second part of creativity is an ability to see relationships among things. If we believe the expression，"There is nothing new under the sun，" the creativity is remaking or recombining（重组）the old in new ways. For example, we might do this by finding a more effective way to study or a better way to arrange our furniture, or we might make a new combination of camera lenses and filters to create an unusual photograph.
A third part of creativity is the courage and drive to make use of our new ideas, to ask for them to achieve some new results. To think up a new idea is one thing; to put the idea to work is another.
These three parts of creativity are included in all the great works of geniuses, but they are also included in many of our day-to-day activities.Which of the following activities is NOT a creative one according to the passage?
| A．To prepare for a meal. |
| B．To arrange the furniture in a special way. |
| C．To buy some books from a bookstore. |
| D．To "write" a letter with the computer. |
"There is nothing new under the sun" really implies that __________.
| A．a new thing can only be created at the basis of earliest things |
| B．a new thing is only a tale |
| C．we can seldom create new things |
| D．we can hardly see really new things in the world |
What does the author think about the relationship between a new thought and its being put into practice?
| A．It's more difficult to create a new thought than to use it in practice. |
| B．To find a new thought will clearly lead to the production of a new thing. |
| C．A man with an excellent ability of practice can easily become an inventor. |
| D．One may come up with a new thought, but cannot put it into practice. |
The best title for this passage is __________.
| A．How to Cultivate One's Creativity |
| B．What Is Creativity |
| C．The Importance of Creativity |
| D．Creativity a Not Faraway Thing |
" Earthquake ！ " The word flashed in my brain. A roaring sound filled my ears. I tried to slide beneath my desk. The desk did a wild tap dance, slipping and sliding towards the centre of the room. I twisted my body and grabbed at the windowsill behind me, somehow kicking free of my dancing chair. I tried to stand. My legs skated a-way as if on a bucking escalator.
My fingers shook, grasped and held the windowsill tightly. Somewhere through the roar sounded the terrified scream of some wounded animal. I looked behind me and tried to steady my gaze on the other kids but the scene was a dizzy nightmare. Some of the class were sitting in the middle of the room, surrounded by chairs and desks. One girl was screaming. A boy was trying to claw his way across the floor to the door in a crazy overarm crawl. My grip froze me to the windowsill.
I cried aloud，" I'm going to die. I'm going to die. Save me, I'm not ready to die, I'm not ready ！" I hunched forward on my knees and pressed my face against my clenched fingers. I looked at the backs of my fingers and stupidly noticed the fragile pale hairs growing out of the pores. The fingers would soon cease to exist. Somehow the impending horror of my death was too terrible to even cry about.
Suddenly, I became aware that the rocking had ceased. Perhaps I wasn't going to die.The roaring sound was made by __________.
| A．a wounded animal | B．people screaming |
| C．children running | D．an earthquake |
When the narrator clenches his fingers, he is __________.
| A．afraid | B．angry | C．injured | D．impatient |
Paragraph two describes the __________.
| A．injuries suffered by the narrator |
| B．effects of a bad nightmare |
| C．disorder in the classroom |
| D．narrator's fear of death |
At the end of the passage there is a feeling of __________.
| A．panic | B．hope |
| C．sorrow | D．excitement |
Alzheimer's disease is a major national health problem. Nearly2 million Americans over the age of 65 have Alzheimer's disease. It is a leading cause of death among the elderly. But Alzheimer's disease is not confined （限于）to the aged. There may be a million or more people under the age of 65 suffering from the disease.
At one time, people suffering from the disease were said to be "getting old". The disease was thought to be a natural part of growing old, but it is now known that Alzheimer's disease strikes young and old alike. It is an organic （器官的）disease, that destroys brain cells.
Alzheimer's disease affects the patient's memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking, then the patient's memory begins to fail. He may forget dates, numbers, names and plans.
As the disease progresses, the patient may not recognize family and friends. These symptoms （症状）often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.
In the last stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.
Scientists don't know exactly what causes Alzheimer's disease. It may be caused by a virus （病毒）. It may be caused by a poisonous substance （物质）in the environment. At present, there is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease.The main idea of the passage is that Alzheimer's disease __________.
| A．is a terrible part of the aging process |
| B．is an organic disease that affects young and old |
| C．can be cured by physical treatment |
| D．causes forgetfulness |
All of the following are symptoms of Alzheimer's disease EX-CEPT __________.
| A．forgetfulness | B．difficulty in speaking |
| C．loss of sight | D．loss of the ability to walk |
According to the passage, which of the following may be a cause of Alzheimer's disease?
| A．Poisons produced by the brain. |
| B．Getting old. |
| C．A virus. |
| D．Lack of exercise. |
The press of Alzheimer's disease can be slowed by __________.
| A．operation |
| B．a change in environment |
| C．medicines |
| D．physical treatment and exercise |
Tourism probably started in Roman times. Rich Romans visited friends and family who were working in another part of the Roman Empire. But when the empire broke down, this kind of tourism stopped.
In the early 17th century, the idea of the "Grand Tour" was born. Rich young English people sailed across the English Channel（英吉利海峡）. They visited the most beautiful and important European cities of the time, including Paris in France, and Rome and Venice（威尼斯）in Italy. Their tours lasted for two to four years, and the tourists stayed a few weeks or months in each city. The "Grand Tour" was an important part of young people's education-but only for the rich.
In the 18th century, tourism began to change. For example, people in the UK started to visit some towns, such as Bath to" take the waters". They believed that the water there was good for their health. So large and expensive hotels were built in these towns.
In the 19th century, travel became much more popular and faster. When the first railways were built in the 1820s, it was easier for people to travel between towns, so they started to go for holidays by the sea. And some started to have holidays in the countryside as cities became larger, noisier and dirtier.
Traveling by sea also became faster and safer when the first steamships were built. People began to travel more too far away countries.
The 20th century saw cars become more and more popular among ordinary people. Planes were made larger, so ticket prices dropped and more people used them.
Thus tourism grew. In 1949，Russian journalist Vladimir Raitz started a company called Horizon Holidays. The company organizes everything-plane tickets, hotel rooms, even food-and tourists pay for it all before they leave home. The package tour and modern tourist industry was born.
The first travel agency in China was set up as early as 1949. But tourism did not take off until 1978. In 2002，the industry was worth 500 billion yuan and became an important part of China's social development.In the early times, the travelers __________.
| A．all came from Roman | B．were very young and strong |
| C．had lots of money | D．traveled by boat |
__________ played the most important role in the tourism development.
| A．Education | B．Money |
| C．Transportation | D．People's ideas |
Modern tourism was born __________.
| A．in 1949 | B．in Roman times |
| C．in the early 17th century | D．in the 19th century |
The underlined phrase " take off" means __________.
| A．a plane rising into the air | B．develop very fast |
| C．remove hats and clothes | D．bring down the prices |