In-line skating（滚轴溜冰）is a fun sport that everyone can enjoy. Follow these safety tips to keep skating safe and fun.
Step 1: Gear up!
Even before you put on your skates, put on all your safety gear（护具）.
Step 2: Buckle up!
Strap（绑紧）on your skates. Make sure they fit well and are snugly（紧贴）around your ankles. This helps your ankles stay strong and straight.
Step 3: Fall down!
You probably do not usually try to fall. But it is good to practice falling on skates. Fall forward onto your knee pads. Put out your hands and let your wrist guards hit the ground. See? Are you surprised that it doesn’t hurt?
Practice falling until it is easy to fall forward and get up again. If you are not afraid to fall, you will try new things. Knowing how to fall will help you be a better skater and find your balance. When you can stay balanced, you won’t fall as much.
Step 4: Stop!
Make sure you can stop on your skates. The quickest and safest is probably the brake stop. The brake is usually on the back of the right skate.
The brake stop:
Roll forward with your skates pointing the same way. Let your right skate roll a little forward. Bend your knees as if you are sitting down. Then press your right heel down hard. This will make your brake pad drag on the ground until you stop.
The T stop:
Roll forward with your skates pointing the same way. Then turn your right foot out so the toes are pointing to your right. Drag your right skate. Let the wheels drag on the ground until you come to a stop.
Another way to stop is to run or jump onto the grass.
Step 5: Roll around!
Find a flat, smooth place to practice. Do not skate in streets. Parks and playgrounds are good places to practice. Look for “No skating” signs to make sure you can skate there.According to the article, which of these steps are most important for a new skater?
| A．Learn to fall and stop safely. | B．Find a class and skate fast. |
| C．Relax and have fun. | D．Buy expensive gear and skates. |
In the step right after “Buckle up!” you should practice how to _____________.
| A．skate fast | B．brake | C．fall safely | D．put on gear |
How is the passage organized?
| A．It tells stories about skating. | B．It gives descriptions of skates. |
| C．It uses a question-and-answer form. | D．It gives step-by-step instructions. |
Like many other nations, China has been busy putting together evacuation （撤侨）plans for its citizens stuck in crisis-torn Libya．The real surprise has been just how many Chinese are living there．The foreign ministry does not know for sure but puts the figure at 30-40,000．
The huge contingent （代表团） in Libya, who work for at least 27 Chinese companies, has brought to light one of the new dilemmas facing China as its economic interests expand．For a mixture of reasons that are partly political, partly business, Chinese workers are now present in many of the most unrest and dangerous parts of the world, including places where anti-Chinese sentiment over jobs and working conditions is on the rise．One of the first wake-up calls was in 2007, when a group of Chinese women were kidnapped in Pakistan, an event which led to the siege of the Red Mosque in Lahore．In the same year, nine Chinese oil workers were killed in Ethiopia．In recent years, Chinese workers have been kidnapped in Cameroon, Congo and Afghanistan．
Publicly, Chinese diplomats admit that the country needs better contingency plans to deal with this sort of situation．Privately, they worry about a different issue: that such incidents will force them to get much more involved in domestic political disputes in far-off lands, pulling the government away from its commitment to a policy of non-interference．The nightmare, a few diplomats and academics admit, would be a large, violent attack on a group of Chinese which then prompted an intense nationalist reaction at home, forcing the government to take the sort of interventionist （干涉主义的） actions it tries to shun．
Beijing gave some indication of how it will respond in the future with the decision on Thursday to send the frigate（护卫舰） Xuzhou, currently conducting anti-piracy tasks off the coast of Somalia, to Libya．Its mission will be to help the evacuation effort, but it is also a warning to any in Libya who might attack Chinese interests, as well as the latest indication of the growing global reach of China’s navy．As Andrew Erickson, a China expert at the US Naval War College says: “This latest initiative（方案） is part of a larger ongoing increase in Chinese power, presence, and influence around the world, and should come as no surprise．China has global interests, cannot free ride forever, and requires a presence in critical areas and situations in order to have a voice．”What is the main idea of the passage?
| A．There are many Chinese workers in the most unrest and dangerous parts of the world． |
| B．China should protect workers in the foreign countries． |
| C．China are taking actions to bring its citizens back from Libya． |
| D．The international situation is terrible |
The underlined word “shun” in the third paragraph most probably means?
| A．take part in | B．avoid |
| C．carry out | D．refuse |
Which of the following is NOT true according to the passage?
| A．It remains unknown how many Chinese are living in Libya． |
| B．A large number workers are working abroad, which bring about advantages and disadvantages． |
| C．In no case will the Chinese government take part in solving the political problems in far-off lands． |
| D．Our government take immediate action to deal with this sort of situation． |
What’s Not true about the frigate Xuzhou?
| A．It is conducting anti-piracy tasks off the coast of Somalia． |
| B．It will help the evacuation effort． |
| C．It is a warning to Libya who might attack Chinese interests． |
| D．It indicates that China’s navy can reach an increasing number of parts of the global． |
The huge Florida wetland known as the Everglades is a slow-moving river 80 kilometres wide but only a few centimeters deep. People call the Everglades a “river of grass” because sawgrass covers most of it. Sawgrass is not really grass. It is a plant that has leaves edged with tiny sharp teeth that can easily cut through clothes—and skin!
Travel in the Everglades is difficult. You cannot walk through shallow water because the sawgrass will cut you. The water is too shallow for regular boats. So, we use an airboat. An airboat is a flat, open boat. Like an airplane, it has a big propeller to move it. The propeller is fixed on the rear of the boat. It makes a tremendous noise, but it does the job. The boat skims along the water’s surface. Although we can still get lost in an airboat, at least we are above the alligators(短吻鳄).
While hundreds of different kinds of animals live in the Everglades, the most famous is surely the alligator. Once endangered, alligators are now protected within Everglades National Park. Visitors are likely to see them both on land and in water.
For a long time, dangers have threatened the Everglades. Around 1900, some people felt this precious wetland should be drained (排干). They said it was just a big swamp and not good for anything. In the 1920s, there was a land boom in Florida. People wanted to build homes everywhere, including in the Everglades. They built canals, levees (防洪堤), and other water systems that stopped the rivers flowing into the Everglades. Factories were built near rivers that flowed into the wetland. These factories dumped poisonous waste that damaged the Everglades ecosystem.
People are now working to preserve the Everglades National Park for the future. Right now, one big problem is the paperbark tree. This tree is an invader from Australia.
Paperbark trees soak up a lot of water. In the early 1900s, people brought them to Florida because they thought they would help drain the Everglades. However, the invaders adapted too well. Paperbark trees have taken over hundreds of thousands of acres of the Everglades and killed other trees. Scientists are cutting down these invaders or spraying them with herbicides (除草剂) to kill them.Which helps to explain why it is difficult to travel in Everglades?
| A．Airboats may make a very big noise. |
| B．You may get lost when passing through. |
| C．Paperbark trees soak up too much water there. |
| D．Many different kinds of animals are to be protected. |
Why do people use airboats instead of normal boats?
| A．They have big propellers to move them faster than alligators. |
| B．The propeller makes loud noise so as to scare alligators. |
| C．Their flat bottom can skim along the water surface. |
| D．They can watch alligators without hurting them. |
The following measures were taken to drain the Everglades except that people______.
| A．built canals and levees to stop the rivers flowing into Everglades |
| B．built factories near rivers that flowed into the wetland |
| C．brought Paperbark to soak up water in Everglades |
| D．are cutting down these Paperbark trees |
The underlined word "invader" probably means something______.
| A．that moves in from another place |
| B．that enters and takes control |
| C．that has been brought in |
| D．that is in danger |
That “Monday morning feeling” could be a crushing pain in the chest which leaves you sweating and gasping for breath. Recent research from Germany and Italy shows that heart attacks are more common on Monday mornings and doctors blame the stress of returning to work after the weekend break.
The risk of having a heart attack on any given day should be one in seven, but a six-year study helped by researchers at the Free University of Berlin of more than 2,600 Germans showed that the average person had a 20 per cent higher chance of having a heart attack on a Monday than on any other day.
Working Germans are particularly not protected against attack, with a 33 per cent higher risk at the beginning of the working week. Non-workers, by comparison, appear to be no more at risk on a Monday than any other day.
A study of 11,000 Italians proved 8 am on a Monday morning as the most stressful time for the heart, and both studies showed that Sunday is the least stressful day, with fewer heart attacks in both countries.
The findings could lead to a better understanding of what is the immediate cause of heart attacks, according to Dr Stefan Willich of the Free University. “We know a lot about long-term risk factors such as smoking and cholesterol（胆固醇）but we don’t know what actually causes heart attacks, so we can’t give clear advice on how to prevent them,” he said.
Monday mornings have a double helping of stress for the working body as it makes a rapid change from sleep to activity, and from the relaxing weekend to the pressures of work.
“When people get up, their blood pressure and heart rate go up and there are hormonal（内分泌）changes in their bodies,” Willich explained. “All these things can have an unfavourable effect in the blood system and increase the risk of a clot（血凝块）in the arteries（动脉）which will cause a heart attack.”
“When people return to work after a weekend off, the pace of their life changes. They have a higher workload, more stress, more anger and more physical activity,” said Willich.Monday morning feeling, as this passage shows, .
| A．is not so serious as people thought |
| B．is harmful to working people in developed countries. |
| C．is the first killer in Germany and Italy. |
| D．is created by researchers in Germany and Italy |
To protect people from suffering from heart attack, doctors have paid much attention to .
| A．people’s working time |
| B．people’s living place |
| C．people’s diet and lifestyle |
| D．people’s nationalities |
It can be learned from this passage that heart attack has nothing to do with .
| A．blood pressure | B．heart rate |
| C．hormonal changes | D．blood group |
If the researchers give us some advice to avoid Monday morning feeling, what might it be?
| A．Stop working on Monday |
| B．Create a pleasant working environment |
| C．Get up late on Monday morning |
| D．Go to work with a doctor |
Science is a dominant theme in our culture. Since it touches almost every aspect of our life, educated people need at least some idea of its structure and operation. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to obtain if one knows something about the things that excite and frustrate the scientist.
This book is written for the intelligent student or lay (外行) person whose knowledge of science is superficial; for the person who has been presented with science as a musty storehouse of dried facts; for the person who sees the chief objective of science as the production of small devices; and for the person who views the scientists as some sort of magician.
The book can be used to supplement a course in any science, to accompany any course that attempts to give an understanding of the modern world, or independently of any course, simply to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is, who scientists are, and what they do.
It will give them an awareness and understanding of the relationship between science and our culture and an appreciation of the roles science may play in our culture. In addition, readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are widespread in our culture.
We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populate it. That population has in recent years come to consist of more and more women. This increasing role of women in the scientific subculture is not an unique incident but, rather, part of the trend evident in all parts of society as more women enter traditionally male-dominated fields and make significant contributions.
In discussing these changes and contribution, however, we are faced with a language that is somewhat sexist, one that uses male nouns or pronouns in referring to unspecified individuals. To balance this built-in bias (倾向), we have adopted the policy of using plural nouns and pronouns whenever possible and , when absolutely necessary, alternating him and her.
This policy is far from being ideal, but it is at least an acknowledgement of the inadequacy of our language in treating half of the human race equally.
We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as many other scientists do, that we shouldn’t take ourselves too seriously. As the reader may observe, we see science as a delightful pastime rather than as a grim and dreary way to earn a living.According to the passage, ‘scientific subculture’ means __________.
| A．cultural groups that are formed by scientists. |
| B．people whose knowledge of science is very limited |
| C．the scientific community |
| D．people who make good contribution to science |
We need to know something about the structure and operation of science because_______.
| A．it is not easy to understand the things that excite and frustrate scientists. |
| B．science affects almost every aspect of our life. |
| C．scientists live in a specific subculture. |
| D．it is easier to understand general characteristics of science. |
The book mentioned in this passage is written for readers who __________.
| A．are intelligent college students and lay person who do not know much about science. |
| B．are good at producing various devices |
| C．work in a storehouse of dried facts |
| D．want to have a superficial understanding of science. |
According to this passage, ______________.
| A．English is a language full of sexual discrimination. |
| B．only in the scientific world is the role of women increasing rapidly. |
| C．women are making significant contributions to eliminating the inadequacy of our language. |
| D．male nouns or pronouns should not be used to refer to scientists. |
From the health point of view we are living in a marvelous age. We are immunized (被免疫) from birth against many of the most dangerous diseases. A large number of once fatal illnesses can now be cured by modern drugs and surgery. It is almost certain hat one day remedies will be found for the most stubborn remaining diseases. The expectation of life has increased enormously. But though the possibility of living a long and happy life is greater than ever before, every day we witness the incredible slaughter of men, women and children on the roads. Man versus the motorcar! It is a never-ending battle which man is losing. Thousands of people the world over are killed or horribly killed each year and we are quietly sitting back and letting it happen.
It has been rightly said that when a man is sitting behind a steering wheel, his car becomes the extension of his personality. There is no doubt that the motorcar often brings out a man’s very worst qualities. People who are normally quiet and pleasant may become unrecognizable when they are behind a steering-wheel. They are ill-mannered and aggressive, willful as two-years-olds and utterly selfish. All their hidden frustrations, disappointments and jealousies seem to be brought to the surface by the act of driving.
The surprising thing is that society smiles so kindly on the motorist and seems to forgive his behavior. Everything is done for his convenience. Cities are allowed to become almost uninhabitable because of heavy tragic; towns are made ugly by huge car parks; the countryside is desecrated (滥用) by road networks; and the mass annual slaughter becomes nothing more than a statistic, to be conveniently forgotten.
It is high time a world code were created to reduce this senseless waste of human life. With regard to driving, the laws of some countries are notoriously lax and even the strictest are not strict enough. A code which was universally accepted could only have a dramatically beneficial effect on the accident rate. Here are a few examples of some of the things that might be done. The driving test should be standardized and made far more difficult than it is; all the drivers should be made to take a test every three years or so, the age at which young people are allowed to drive any vehicle should be raised to at least 21; all vehicles should be put through strict annual tests for safety. Even the smallest amount of alcohol in the blood can weaken a person’s driving ability. Present drinking and drinking laws (where they exist) should be made much stricter. Maximum and minimum speed limits should be enforced on all roads. Governments should lay down safety specifications for manufacturers. All advertising stressing power and performance should be banned. These measures may sound extremely harsh. But surely nothing should be considered as too severe if it results in reducing the annual loss of human life. After all, the world is for human being, not motorcars.The main idea of this passage is that __________ .
| A．traffic accidents are mainly caused by motorists. |
| B．thousands of people the world over are killed each year. |
| C．the laws of some countries about driving are too lax. |
| D．only stricter traffic laws can prevent accidents. |
What does the author think of society toward motorists?
| A．Society smiles on motorists. |
| B．Huge car parks are built in cities and towns. |
| C．Victims of accidents are nothing. |
| D．Society forgives their rude driving. |
Why does the author say, ‘His car becomes the extension of his personality’.
| A．Driving can show his real self. |
| B．Driving can show the positive part of his personality. |
| C．Driving can bring out his character. |
| D．His can show his temper. |
The attitude of the author is _________.
| A．ironical | B．critical |
| C．appealing | D．aggressive |
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