17.A 考查数字推断题。根据文章倒数第3段“Studies also show that the visibility(能见度)in eastern regions of China has dropped by 7 to 15 km compared to that in the early 1960s,as a result of air pollution.”计算得出。
18.B 考查观点理解题。根据第三段“Besides the existing pollution control program for ...air polluting areas...Coalconsumption caps will also be tried out in some areas,according to the plan.”,第四段“The plan is aimed at dealing with regional air pollution...”,以及最后一段第一行中的关键词“pollution control program”,“the plan”以及“the new plan”可知。
19.D 考查词语推测题。根据文章最后一段“The new plan also requires an improved air quality system,which will measure the pollution levels. ‘The current system,which only measures some major pollutants,cannot reflect the true picture,’ said Chai. ”得知the true picture指代上一句中的the pollution levels。
.20.Goes 21.Causes 22.polluted 23.caring
24.40/Forty 25.namely 26.asked 27.provided
28.as 29.make
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