原文：Rudimentary air traffic control(ATC) existed well before the Grand Canyon disaster.题目：Air traffic control started after the Grand Canyon crash in 1956.

答案：F

考点：原文是before，题目中是after，这就是时间上出错了。

原文：…biological control, involving the selective use of natural enemies of the pest population…题目：Biological control entails using synthetic chemicals to try and change the genetic make-up of the pests’ offspring.

答案：F

考点：原文中有提到使用人工化学，但是生物控制则是使用害虫的天敌natural enemies，题目中说生物控制是使用人工化学物品 synthetic chemicals，明显的对象错误，关系错误。

原文：无明确出处

题目：In the future, governments should maintain ownership of water infrastructures.

答案：NG

考点：因为该题目是全文的最后一题，所以按顺序原则应定为最后一段寻找，但文章中没有出现过government这个具体名词，事实上整篇文章都没有出现过。题干中的主体在文章中没有出现过，你无法判断这个事实是否存在，因此就是NG。

原文： Lowing secondary schools in Japan cover three school years, from the seventh grade (age 13) to the ninth grade (age 15). Virtually all pupils at this stage attend state schools: only 3 percent are in the private sector. Schools are usually modern in design, set well back from the road and spacious inside.

题目：Private schools in Japan are more modern than and spacious than state-run lower secondary schools.

答案：NG

考点：题目中的两个主体private schools 和后面的state-run lower secondary schools 原文都提到了，细节上modern and spacious也提到了，但是比较关系more than并没有提及，因此是NG。