Air pollution is a leading cause of cancer and classified among top human carcinogens .said the International Agency for Research on Cancer .which is the World Health Organization's (WHO) cancer agenc 题目和参考答案——青夏教育精英家教网—

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19．Air pollution is a leading cause of cancer and classified among top human carcinogens （致癌物质），said the International Agency for Research on Cancer （IARC），which is the World Health Organization's （WHO） cancer agency，on Oct 17，2013．"Our task was to evaluate the air everyone breathes rather than focus on specific air pollutants，"the IARC's 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 pollution killed 223，000 people worldwide，and there was also convincing evidence that it increases the risk of bladder （膀胱） cancer．Loomis said people in Asia，Eastern North America，some places in Central America and Mexico，as well as North Africa have relatively high exposure（暴露）．Developing countries with large populations and booming manufacturing sectors，such as China，are particularly at risk．This week，Harbin，the capital city of Heilongjiang province，became the first Chinese city to officially suspendclasses due to serious smog，really good for teachers and students．
    Many developed countries face similar problems，although to a lesser（较少的、次要的） degree than most developing nations．Between 91 and 96 percent of Europeans living in cities are exposed to levels of PM2.5-tiny particles with a diameter of less than 2.5 micrometers-that are higher than the WHO safety limits．
    Although both the composition and levels of air pollution can vary dramatically from one location to the other，the IARC said its conclusions apply to all areas of the world．"Given the scale of the exposure affecting people worldwide，this report should send a strong signal to the international community to take action without further delay，"said Christopher Wild，director of the IARC．
60．What's the main task of IARC？B
A．To focus on cancer-causing substances．
B．To evaluate the air quality．
C．To study the developing risk of cancer．
D．To send signals to the international community．
61．The underlined word"suspend"in Paragraph 2 probably meansC．
A．accelerate        B．acknowledge          C．delay        D．decline
62．Why should the international community take action without further delay？A
A．A large number of people worldwide are exposed to air pollution．
B．More and more people in developing countries are exposed to air pollution．
C．Developed countries face air pollution，the level of which is higher than the safety limits．
D．The composition and levels of air pollution vary from place to place．
63．What might be the best title of the passage？D
A．PM2.5，bad effect．
B．Safety limits of air pollution．
C．Signals of air pollution．
D．Air pollution，cancer risk．

分析本文属于说明文阅读，作者通过这篇文章主要向我们描述了空气污染会造成癌症的危险，评估空气质量的 IARC数据显示，全世界的人们不同程度的受到空气污染的影响，因此呼吁国际社会应该立即采取行动．

解答 60．B．推理判断题．根据文章第一段"Air pollution is a leading cause of cancer and classified among Group 1，or top，human carcinogens"可知文章讲的是空气污染会造成癌症的危险；故选B．
61．C．词义猜测题，根据第二段This week，Harbin，the capital city of Heilongjiang province，became the first Chinese city to officially suspendclasses due to serious smog，really good for teachers and students．可知哈尔滨严重的雾霾导致了学校停课，故选C．
62．A．细节理解题．根据文章第三段"Our task was to evaluate the air everyone breathes rather than focus on specific air pollutants"，可知 IARC的主要目的是评估空气质量；故选A．
63．D．细节理解题．根据文章最后一段"Given the scale of the exposure affecting people worldwide，this report should send a strong signal to the international community to take action without further delay"，可知国际社会应该立即采取行动，因为全世界很多人受到空气污染的影响；故选D．

点评考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．

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