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1、贵阳市贵阳市 2015 高考英语（三月）阅读理解、信息匹配练习（高考英语（三月）阅读理解、信息匹配练习（9）答案）答案【由江苏省盐城市2014模拟改编】阅读理解。阅读下面短文，从每题所给的 A、B、C、D 四个选项中，选出最佳选项。Air pollution is a leading cause of cancer and classified among Group 1,or top, human carcinogens (致癌物质), said the International Agency for Research on Cancer (IARC), which is the Worl
2、d Health Organizations (WHO) cancer agency, on Oct 17,2013.The most widely used system for classifying carcinogens comes from the IARC, which places them into five groups. Group 1 carcinogens definitely cause cancer in humans. Group 2A is probably carcinogenic to humans, Group 2B is possibly carcino
3、genic, the carcinogenicity of Group 3 in humans is unclassifiable, and Group 4 is probably not carcinogenic to humans. Only a little more than 100 are classified as Group 1 cancer-causing substances, including ultraviolet radiation and tobacco smoke.“Our task was to evaluate the air everyone breathe
4、s rather than focus on specific air pollutants,” the lARCs Dana Loomis said in a statement. “The results from the reviewed studies point in the same direction: the risk of developing lung cancer is significantly increased in people exposed to air pollution.”In 2010, lung cancer resulting from air po
5、llution killed 223,000 people worldwide, and there was also convincing evidence that it increases the risk of bladder (膀腕) cancer, according to the IARC.Air pollution is already known to raise risks for a wide range of illnesses, including respiratory and heart diseases.Air pollution is global, alth
6、ough the levels of it vary over space and time.Loomis said people in Asia, eastern North America, some places in Central America and Mexico, as well as North Africa have relatively high exposure. Developing countries with large populations and booming manufacturing sectors, such as China, are partic
7、ularly at risk.Many cities in China, such as Beijing, frequently see smog. This week, Harbin, the capital city of Heilongjiang province, became the first Chinese city to officially suspend classes due to serious smogMany developed countries face similar problems, although to a lesser degree than mos
8、t developing nations. In Europe, levels of many pollutants have fallen. But between 91 and 96 percent of Europeans living in cities are exposed to levels of PM2.5tiny particles with a diameter of less than 2.5 micrometersthat are higher than the WHO safety limits, says a report published by the Euro
9、pean Environment Agency on Oct 15.Although both the composition and levels of air pollution can vary dramatically from one location to the other, the 1ARC said its conclusions apply to all regions of the world.“Given the scale of the exposure affecting people worldwide, this report should send a str
10、ong signal to the international community to take action without further delay,” said Christopher Wild, director of the IARC.1、What might be the best title of the passage?ASignals of air pollutionBSafety limits of air pollutionCAir pollution, cancer riskDAir pollution, smog risk2、Whats the main task
11、 of IARC?ATo focus on cancer-causing substances.BTo evaluate the air quality.CTo study the developing risk of cancer.DTo send signals to the international community.3、Why should the international community take action without further delay?AThe composition and levels of air pollution vary from place
12、 to place.BMore and more people in developing countries are exposed to air pollution.CDeveloped countries face air pollution, the level of which is higher than the safety limits.DA large number of people worldwide are exposed to air pollution.【参考答案】13、C B D 【科普知识型-阅读理解】Doctors sometimes prescribe li
13、ght therapy to treat a form of depression in people who get too little morning sun. But too much light at other time may actually cause such mood disorders. Longlasting exposure to light at night brings depression, a new study finds, at least in animals.The new data confirm observations from studies
14、 of people who work night shifts, says Richard Stevens of the University of Connecticut Health Centre. Mood disorders join a growing list of problems, including cancer, obesity and diabetesthat can occur when light throws life out of balance by disturbing the biological clock and its timing of daily
15、 rhythms.In the new study, Tracy Bedrosian and Randy Nelson of Ohio State University exposed mice to normal light and dark cycles for four weeks. For the next four weeks, half of the mice remained on this schedule, and the rest received continuous dim light throughout their night. Compared with mice
16、 exposed to normal nighttime darkness, those getting dim light at night lost their strong preference for sweet drinks， “a sign they no longer get pleasure out of activities they once enjoyed， ” Bedrosian says.In a second test, mice were clocked on how long they actively tried to escape a pool of water. Those exposed to night lights stopped struggling and just floated in the water, a sign of “behavioural despair”，10 times as long as the mice that had experienced normal nightt
