Wind is the great maker of waves. There are exceptions, such as the tidal(潮汐的) waves sometimes produced by earthquakes under the sea. But the waves most of us know are produced by winds blowing over the sea.
Now before constructing an imaginary life history of a typical wave, we need to know certain physical things about it. A wave has height, from trough (low point) to crest (high Point). It has length－the distance from this crest to that of the following wave. The period of the wave means the time it takes for succeeding crests to pass a fixed point. None of these things stays the same－for all depend upon the wind, upon the depth of the water and many other matters.
The water that makes up a wave does not advance with it across the sea. Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position. And it is fortunate that this is so. For if the huge masses of water that make up a wave actually moved across the sea, sailing would be impossible.
If we want to find the speed of a wave, we may use the following way:
Speed =" wavelength" × frequency
Here, wavelength is the distance between two high points (crests), frequency means the number of cycles per second.
What causes waves?
| A．Earthquakes and nothing else. | B．Only wind. |
| C．Wind causes most waves. | D．Wind causes some waves. |
Which of the following is true according to the passage?
| A．The water of a wave moves away across the sea. |
| B．The water of a wave remains almost at the same place. |
| C．The water of a wave goes with the passing of the wave. |
| D．The length of a wave means the distance from the top of a wave to the bottom. |
The speed of Wave 1 is 100 cm/s, frequency 10. The frequency of Wave 2 is 300, while its speed is twice that of Wave 1. Which of the following is right?
| A．The wavelengths of the two are equal. |
| B．The wavelength of Wave 1 is 10 times longer than that of Wave 2. |
| C．The wavelength of Wave 2 is longer than that of Wave 1. |
| D．The wavelength of Wave 1 is longer than that of Wave 2. |
How many coins do you have in your pocket right now? Three? Two? Or one? With a phone card, you can make up to 200 calls without any charges at all．
★What do you do with it?
Go to a telephone box marked "Phone-card"．Put in your card to start, make your phone call and when you have finished, the screen will tell you how much is left on your card．It costs no extra for the cards, and the calls cost 10 p（便士） per unit, the same as any other pay-phone call．You can buy it in units of 10, 20, 40, 50, or 100．
★Appear in a shop nearby．
Near each card-phone place, you will find a shop where you can buy one．They are at bus, train or metro stations．At universities, hospitals, clubs, restaurants and shopping centers, you can also buy it．
★No more broken pay-phones．
It is possible that many pay-phones don't work because they have been damaged． There are no coins in a card-phone to excite the thieves' interest in it．So you are not probably to find a broken one．
Get a phone-card yourself and try it out．Or get a bigger wallet．The passage is most probably ____．
| A．a warning | B．a notice |
| C．an advertisement | D．an announcement |
The underlined word "one" means ____．
| A．a shop | B．a coin | C．a pay-phone | D．a phone-card |
It is suggested in the passage that you buy a phone-card because ____．
| A．you have got a bigger wallet than others |
| B．it's convenient to make calls with a phone card |
| C．the phone box might have been damaged |
| D．there are many different kinds of phone-cards |
"Get out of the plane!" Justin shouted．Teddy and he dropped to the ground,．．．
When Kathy and Victor reached the edge of the meadow （牧场）flames of the fire were shooting more than five meters into the air．
Kathy couldn't believe what she was seeing．One glance told her they needed medical attention immediately．She questioned Victor, "Are you able to find someone nearby for help?"
"There are no farmers, nor villagers nearby," he replied．
"I'm a distance runner, and I'll go for help．" Looking at the seriously injured men, Kathy said to Victor, "It may take me several hours to get out．" She started out．
When she was 23, Kathy set a women's record in a Marathon of 42 kilometers．But now she was running the race of life．She had nearly 30 kilometers of hard wilderness to cover to get help．
Kathy had been running for two hours．This was far back into the wilderness．The country path was growing vague （模糊）．She stopped to take a quick compass （指南针） reading．Yes, she had run almost for more than 20 kilometers．Her heart fell, her muscle aching．And finally she saw her car in the distance．
She jumped into the car and sped away．She reached a holiday house and called the police．
During the wait, she walked around, relaxing her legs and drinking water．It took almost two hours for a police helicopter to reach her at the trail （小路） end．They needed her for one more task．Who actually had the airplane accident?
| A．Justin himself | B．Kathy and Victor |
| C．Justin and Teddy | D．Kathy herself |
The underlined part "Now, she was running the race of life" means that ____．
| A．Kathy would set up a new record |
| B．Kathy was running for the lives of others |
| C．Kathy would run a race alone |
| D．Kathy couldn't rely on Victor this time |
Kathy stopped to have a look at her compass because ____．
| A．the country path was getting vague | B．she had completely lost her way |
| C．she wasn't sure of her own memory | D．there was only the wilderness |
What do you think Kathy's final task would be?
| A．Giving the injured food and drinks． | B．Taking the injured to the hospital． |
| C．Going back to put out the big fire． | D．Showing the police the crash site． |
Do you want to live a happier, less stressful (有压力的) life?
Try laughing for no reason at all. That’s how thousands of people start their day at Laughter Clubs around the world – and many doctors now think that having a good laugh might be one of the best ways to stay healthy.
The first Laughter Club was started in Mumbai, India, in 1995 by Dr Madan Kataria. “Young children laugh about 300 times a day. Adults laugh between 7 and 15 times a day,” says Dr Kataria. “Everyone’s naturally good at laughing – it’s the universal language. We want people to feel happy with their lives.” There are now more than 500 Laughter Clubs in India and over 1,300 worldwide.
Many doctors are also interested in the effects (效果) of laughter on our health. According to a 5 – year study in the body. Laughter improves our health against illness by about 40%.
So, what happens at a Laughter Club? I went along to my nearest club in South London to find out. I was quite nervous at the beginning of the class, to be honest – I wasn’t interested in laughing with a group of strangers, and I was worried about looking stupid. Our laughter teacher told us to clap our hands and say “ho ho ho, ha ha ha,” while looking at each other. However, our bodies can’t tell the difference between fake laughter and real laughter, so they still produce the same healthy effects.
Surprisingly, it works! After ten minutes everybody in the room was laughing for real – and some people just couldn’t stop! At the end of the class I was surprised by how relaxed and comfortable I felt. So if you’re under stress, then start laughing. You might be very pleased with the results!In which country was the first Laughter Club started?
| A．Britain. | B．America. | C．Australia. | D．India. |
How did the writer feel at the beginning of the class?
| A．Surprised. | B．Pleased. | C．Nervous. | D．Stressful. |
When did the people in the club begin to laugh for real?
| A．After a few minutes. | B．After a few hours. |
| C．After a few seconds. | D．After a few days. |
Which of the following is true according to the passage?
| A．Fake laughter and real laughter are both good for health. |
| B．40% of the people in Laughter Clubs are good friends. |
| C．Adults laugh more often than children in a day. |
| D．Laughing is the best way to prevent illness. |
We had known for along time that flowers of different plants open and close at different time of day. Yet no one really understands why flowers open and close like this at special time. The question is not as simple as we might think, as recent experiments have shown. In one experiment, flowers were kept in constant (持续的）darkness. We might expect that the flowers ,without any information about the time of the day, did not open as they usually do. In fact, they continue to open at their usual time. This shows that they have some special ways of knowing the time. Their sense(感觉) time does not depend on information from the outside world. It is inside them: a kind of "inner (内部的）clock". This discovery may not seem to be very important. However, it is later found that not just plants but animals have this "inner clock" which control（控制）the working of their bodies and influences their activities. Human beings, then, are also influenced by it. Whether we wish or not, itaffectssuch things in our life as our need for sleep or need for food.Before the experiment arrived at a conclusion, people had thought that the flowers would____.
| A．never open in constant darkness |
| B．change their usual time to open |
| C．open ahead of the time as they usually did |
| D．continue to open at usual time |
The sense of time that flowers have is connected with_____________.
| A．its age and size |
| B．light and temperature |
| C．a kind of strange power(力量）inside them |
| D．some unknown information from the outside world |
What will happen if we make good use of the "inner clock"
| A．We'll need less sleep or food. |
| B．We'll be able to sleep as long as we wish to. |
| C．We'll be able to change our work time when necessary. |
| D．We'll have more energy to do our work better. |
What's the Chinese meaning of the underlined word" affects"
| A．产生 | B．影响 | C．给予 | D．依赖 |
Roger was a thief，but he wasn't very clever. When he was in school, he stole apples or oranges from other children. Sometimes he stole pencils or books from other children. But he always got caught.
The teacher spoke to Roger's parents and they tried to stop him from stealing things, but Roger wouldn't stop. He kept stealing.
When he was older, he began to steal from stores, but he was still stupid. Once, he went into a store wearing the clothes he had stolen the day before. The still had the price tags（标签） on them, and the store manager called the police. They warned him that he would go to jail if he didn't stop stealing.
Then Roger decided to rob a bank. He planned everything. He got some gloves so that he would not leave fingerprints, and a mask so that no one would recognize him.
" But what if they recognize my voice?" he thought.
He decided to write his message on a piece of paper so that he wouldn't need to speak. He found an old envelope and wrote "give me all the money" on the back of it. He got a toy gun and went to the bank. He put on his mask and his gloves（ and showed the note to the bank clerk. The clerk gave him all the money, and Roger ran out of the bank and went home.
Ten minutes later he heard a knock on the door. It was the police. They had come to arrest him for robbing the bank.
" How did you find me so quickly?" asked Roger
" It was easy," said the police." Your address was on the envelope!"How old was Roger when he started stealing things?
| A．10 | B．40 | C．70 | D．22 |
What is something Roger did not steal?
| A．money | B．food | C．a shirt | D．a bicycle |
In this story, the underline word "recognize" means __________.
| A．know | B．make | C．watch | D．understand |
How did the police catch Roger?
| A．His friend worked in the bank. | B．The clerk knew his voice. |
| C．They found his picture. | D．They knew his address. |
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