| Country | City | PM2.5concentration (浓度) | Family (million) | Cars (million) | Ways to control PM 2.5 |
| China | Beijing | 1.121 | 6.9 | 5.2 | In January 2012,PM2.5was first tested(检测) by China.Beijing,Shanghai,Tianjin,Shandong and Wuhan have taken action to test PM 2.5step by step. |
| Japan | Tokyo | 0.023 | 4.3 | 8 | Japanese experts all agree PM2.5comes from the tail gas of the car.They use the white towel to test tail gas. |
| America | New York | 0.021 | 6 | 8 | In 1997,America first set up a level to test PM2.5.They use colors to show the air quality.Green means"good".Orange means"dangerous".Red means"unhealthy". |
| England | London | 0.029 | 2.7 | 4 | We can test air quality (质量)by phone and show it to the public. |
分析 短文详细的介绍了一些国家的地区的空气质量,及其控制方法等.
解答 答案:51.A 细节理解题.根据第二列和第三列句子Beijing:1.121;Tokyo:0.023;New York:0.021;London:0.029.可知北京的浓度最高.故选A.
52.A 细节理解题.根据表格倒数第二行句子In 1997,America first set up a level to test PM2.5.1997年,美国第一个建立PM2.5测试标准.可知是美国.故选A.
53.B 细节理解题.根据表格最后一行句子We can test air quality (质量)by phone and show it to the public.通过电话向公众展示空气质量.可知如果你去英国,你可以通过电话知道空气质量.故选B.
54.A 细节理解题.根据表格第三行句子Family:4.3;Cars:8.可知在东京每个家庭有近两辆车.故选A.
55.C 细节判断题.根据倒数第二行句子Red means"unhealthy".红色意味着"不健康".可知在美国,人们用红色表示PM 2.5是危险的是错误的.故选C.
点评 在通读全文的基础上,根据全文大意,展开逻辑思维,瞻前顾后,认真观察选项,仔细推敲,确定最佳答案.
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