题目内容
听力原文： Unwanted sound, or noises produced by airplanes, traffic, or industrial machinery, is considered a form. of pollution. Noise pollution is at its worst in densely polluted areas. It can cause hearing loss, stress, high blood pressure, sleep loss, distraction, and lost productivity.
Most humans can hear sounds between 20 and 20,000 hertz, while dogs can hear high-pitched sounds up to 50,000 hertz. While high frequency sounds tend to be more hazardous and more annoying to heating than low frequency sounds, most noise pollution damage is related to the intensity of the sound. Measured in decibels, noise intensity can range from zero, the quietest sound the human ear can detect, to over 160 decibels. Conversation takes place at around 40 decibels, a subway train is about 80 decibels, and a rock concert is from 80 to 100 decibels. The intensity of a nearby jet taking off is about 100 decibels. The threshold for pain, tissue damage and potential hearing loss in humans is 120 decibels. Long lasting, high intensity sounds are the most damaging to hearing and produce the most stress in humans.
Solutions to noise pollution include adding insulation and sound proofing to doors, walls, and ceilings; using ear protection, particularly in industrial working areas; planting vegetation to absorb and screen out noise pollution; and zoning urban areas to maintain a separation between residential areas and zones of excessive noise.
According to the passage, intense noise pollution may NOT cause ______.
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听力原文：A: Hello, Michael. How are things going？
B: Very well, thanks. Cathy, guess what, Tom and I have just won this year's speech contest.
A: Oh, how wonderful! Congratulations!
B: Thanks. Are you free this Saturday evening？ You see, we are thinking about having a Party,.... you know ... just to celebrate.
A: Yeah, I'll be glad to come. You guys deserve to celebrate. You've been working so hard, haven't you？
B: Yes, to tell the truth, we haven't had a good night's sleep last week. We need a break.
A: Are there any other people coming to the party？
B: We've invited some of our friends to come over and we would especially like you to join us.
A: I'd be delighted to. Thank you ... Um ... Would you like me to bring some food or drinks？
B: Oh, don't bother. We've got everything ready.
A: Oh, that's very kind of you. By the way, can I bring my sister to the party？ She’s coming to visit me this weekend.
B: Sure, you can. She'll be welcome.
(27)
China was also seriously affected in the crisis.
企业所得税纳税人依照章程规定解散时，其清算终了后的清算所得应当缴纳企业所得税。()
Acid Rain
However, many advantages the industrial society brings us also have a down side. One of the adverse effects of industrialization is acid deposition due to power plants, fossil fuels and automobile emissions. Acid rain is the popular term but the scientists prefer the term acid deposition. Acid rain can have adverse effects on the environment by damaging forests and lakes, making it too difficult for many plants and animals to live.
Charles Angus Smith, an Englishman, was the first to suggest, in 1852, that sulfuric acid in Manchester, England, was causing metal to rust and dyed goods to fade. One source that causes acid rain is fossil fuel. This energy source contributes 23.1 million tons of sulfur dioxide and 20.5 million tons of nitrogen oxides to our atmosphere worldwide. When fossil fuels are ignited, such as oil and coal, they release carbon dioxide, a so-called greenhouse gas that traps heat within the earth's atmosphere, which causes global warming. Also, they release sulfur dioxide, nitrogen oxide and metals such as mercury, aluminum into the atmosphere, which later can be carried a long distance from their source and be deposited as acid rain.
Forests are a complex ecosystem that involves trees, soil, water, the air, climate and other living organisms that support the community of wildlife: animals, birds, insects and plants. The countries most affected by acid rain arc in Europe. Central Europe faces a much greater threat since it has a large amount of forest area and about 8% of German's forest face the lethal effect of acid rain. Acid rain kills about 50 million hectares of forest. Acid rain does not kill trees outright but weakens them to the point where they become susceptible to extremes of heat or cold, attacks from blight-causing or from inserts, and other environmental stresses.
When acid rain falls into lakes and rivers, it destroys all living things and populations of fish, aquatic plant life and microorganisms decline. Fish just goes extinct because they simply fail to reproduce and become less and less abundant, until they die out.
The result of acid rain is not only the destruction of forests and lakes, but also the corrosion of buildings and monuments. Almost every building of a major urban or industrial centre may be at risk from the corrosive effects of acid deposition and the rate of corrosion has increased dramatically in many urban areas. The Athenian monuments have got worst in the past 20～25 years as a result of pollution. Acid attack can also lead to stone decay through the creation of salt, which can crystallize and force apart mineral grains, causing the stone to disintegrate.
As our society gets more advanced, there is also the rising effect of pollution. To stop the effect we need to find alternative ways to remove or replace fossil fuel that is responsible for acid rain. The government needs to put stricter laws on the industries that pollute. People should find an efficient and alternative way to stop the pollution, because the effects of acid rain can be seen all round ns, starting with forests and lakes, and in the heart of a city where the buildings and monuments are being eaten away by pollution.
According to the passage, acid rain is
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