安徽省20xx届高三英语第二次联考12月试题

安徽省20xx届高三英语第二次联考12月试题内容摘要：

slowly begins to acquire an off taste. Many people think that this is because of microanisms(微生物 ). But that39。 s not what makes old water taste not fresh. For that we can thank carbon dioxide. After about 12 hours, tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its pH and giving it an off taste. But it39。 s most likely safe to drink. However, back to those microanisms. If you use a dirty glass day after day, there is more of a chance of bacteria making themselves known。 a risk that increases if you share the glass with another mouth as well. But assuming you use a fresh glass every few days, you probably won39。 t have a problem unless the glass has been touched by dirty fingers, and especially if those dirty fingers went unwashed after using the bathroom. As for plastic water bottles that have been left out in the sun or in the car, step away from the bottle, warns Dr. Kellogg Schwab, director of the Johns Hopkins University Water Institute. A chemical called bisphenolA, or BPA, along with other things used to make plastic can leach(过滤 ) into your water if the bottle heats up or sits in the sun, he explains. BPA, as you probably know, has been linked to everything from heart disease to cancer. Schwab also adds that plastic used for mercial bottled water isn39。 t meant to be washed or refilled, so use only one time and recycle. Or don39。 t buy them at all。 use refillable water bottles instead. 28. Tap water begin to acquire an off taste because of . A. BPA B. the glass C. the microanism D. carbon dioxide 29. According to Paragragh 2 , tap water that39。 s been left sitting out for 12 hours____. A. tastes better B. is still safe to drink C. contains few microanisms D. is most likely undrinkable 30. What should we do with plastic water bottles that have been left out in the sun or in the car? A. Throw them away. B. Refill them with fresh water. C. Use them after they cool down. D. Clean them and use them again. 31. Which of the following is true about BPA? A. It is safe for people to use. B. It is a kind of new material. C. It can cause great harm to people. D. It is the main material to make plastic. D To pollute or not to pollute? That is the question. In order to survive, we all need to cause pollution. Factories that process the food we eat, clothes we wear, and cars we drive have to cause pollution. The environment has the ability to absorb our waste or the pollution, but its absorption ability has its limits. If the pollution level is higher than what the environment can cope with, then that39。 s the time when pollution is bad. If the pollution level bees too high, human health can be affected badly. Then, the productivity level of the sick people is low and the economy suffers. The economy suffers not only because of the lost productivity of the people, but also because the government must pay for the damage the pollution has done to its people. This is the reason why the government prefers taxation policy. Imposing【征收） a tax on firms that pollute the environment can be considered a good strategy, as long as the tax covers all the external costs or the cost of the damage the firm has created during production. Taxation, if enforced（执行） really well, can make firms create a technology that may reduce pollution, if they find out that it will be cheaper than continuously paying the tax. The disadvantage of this policy, however, lies in the possibility that some big firms will find the tax cheap and then they will just produce more and pollute the environment more. If other small firms find the tax expensive, thus closing down, their production will be eaten up by those firms which can afford the tax. Therefore, it is important that lawmakers in each country, when deciding to impose a tax on pollutant emissions, first review and analyze very carefully the real cost of the damage. 32. We can infer from the first paragraph that A. for human beings pollution is unavoidable B. it39。 s not easy to figure out how bad pollution is C. humans should reduce the use of everyday products D. we can survive without causing pollution. 33. The underlined word absorb h。