题目内容
Nobody can be really free from the sound. Whether we live in the middle of a modern city or a faraway village, we are surrounded by sound every day such as the sounds from television and radio, household appliances, and traffic. Sound makes up a part of our life.
In fact, most of us can not bear total silence. Sound gives us a sense of safety and brings us joy. Scientific tests have also proved that total silence is a very frightening experience for human beings. A recent report shows that people feel quite lonely without background sound while they are working. The background sound which doesn't change too much may even help people to concentrate.
However, sometimes, sound is not helpful and joyful in people's life. Normally, we hear these sounds at safe levels that do not affect our hearing. However, when we are exposed to harmful noise—the sounds that are too loud or loud sounds that last a long time, sensitive structures in our inner ear can be damaged, causing hearing loss.
Besides, unpleasant sounds, particularly sudden and uneven ones, may cause fear and anger. Noise is a source of stress, which can lead to tiredness, irritability and headaches. Noise can also raise blood pressure, putting strain on the heart. People living in homes exposed to high levels of road-traffic noise were more likely to report having hypertension, according to a study in Environmental Health, The researchers estimate the noise levels for the addresses of more than 24,000 Swedish. They found that people exposed to an average traffic-noise level above 64 decibels (slightly louder than a normal conversation) were 52% more likely than people exposed to 45 decibels of road noise to report having high blood pressure, a key risk factor for heart disease, after removing age, socioeconomic status, and other variables. Noise exposure could cause hypertension by persistently elevating the body's level of stress hormones.
Now we know that noise is harmful to our health, but can we get used to the excessive noise？ The answer is NO. If, after long exposure to excessive noise, we stop hearing it — because we have become deaf!
From the first and second paragraphs we learn that
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All the goods are ruled by the axioms of supply and demand. We all know that workers earn more than before, as a result, they have more to pay for what they need or what they like. The great demand promotes the price to go up. At the same time, if there is a shortage, the price also goes up. According to the economists, the value of money depends on the cost of living. The cost of living is what we spend on the necessities. The food, housing and medical expenses have increased largely these years, so the value of money has decreased. For some people whose salary has not increased much, the expense of living becomes a headache. Don't worry about that. To help you better manage ydur salary and keep the quality of your life, here comes some money saving tips.
First, you need to set ambitious goals to encourage you to save money. For example, you plan to have a formal dress in one year, to own a car in five years or to buy an apartment in twenty years.
Second, stay away from those that waste money. Learn to keep a diary of how much you spend and what it is for. Planning a budget is important. Budget helps you to spend money wisely though the cost of living increases. So, how do you make a budget？ There are numerous charts and software and all kinds of things that you can buy to help you. They're all fine, but all that you really need is a notebook, a pencil and a small calculator. Just sit down and annotate everything that you spend money on in a month with these tools. Everything! Think twice before using money on expensive skin care products. The best way to keep your skin in good condition is sufficient sleep. After you know exactly where your money is going, you can have chance to get rid of your bad consumption habit.
Following them your daily expense will be cut off easily, but still keep the quality of your life.
According to the passage, which way is the best to keep a balanced life？
As for the Dragon-Boat Festival, which statement is right？
内部会计监督制度是内部控制制度的重要组成部分。()
Electricity plays an essential part in our life. No one can deny that electric light is necessary for people's life. However, can you imagine such a world where there is no【1】of electric light？ As darkness falls over, children read in the light given by oil lamps and candles. Youths【2】time only by talking instead of watching TV. Everything is surrounded by【3】shadows.【4】, we have a man named Edison. He created bulb that【5】for two days before burning out. He also developed successfully a system for【6】electricity from a central powerhouse. It is he that gives us electric light, gramophone, moving pictures—all those we take【7】granted.
After the invention of electricity, manufacturers increasingly applied the findings of invention to their businesses,【8】generating new industrial growth. Development of electricity leads to the【9】creations of new products and materials. In the past century and a half, electricity has steadily【10】. At first, it is scientific curiosity, then to a luxurious part of the【11】, and then to being necessary in every one's life. Electricity has been common in the latest fifty years. Simple tasks, such as setting alarm clock to wake up at a【12】time or enjoying a piece of music, are accomplished via electronic means.
We live with the benefits of electricity every day. As a result, we always think that whenever we【13】our gadgets into the wall socket, the power will be there. For most modern people, the loss of power means the complete loss of【14】. Their lifestyle. is so dependent upon the grid's constancy【15】they do not know how to live without it. How do you cook a meal without electricity if your gas stove has an electric ignition？ Please imagine the life without electricity further. What do you do with a freezer full of food in a hot day？ How do you find out what is happening in your area with the TV and radio off？ These are questions which should be seriously considered. Let us imagine the【16】of a short power outage together. Factories close down; phones and computers go dead; food【17】in refrigerators. What a disordered life that would be!
All the convenience which electricity has brought to our life should owe to Edison. When Edison died at his home in New Jersey in 1931, the whole United States were switched off to mark his passing, and in【18】of the man whose discoveries had so changed and improved the life of people everywhere. For a moment, all was【19】— as the world had always been before, until Edison【20】on the light.
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