【答案及详解】

　　　　　　　答案：
　　1.A)Its excessive use of air-conditiong对应原文Today most Americans need to take air-conditioning for granted to homes, offices, factories, theatres, shops, studios, schools, hotels, and restaurants.
　　take sth for granted认为某事理所当然　
　　2.B)the reduction of social communications of neighborhood life对应原文forced families into retreating into families with closed doors and shut windows, reducing the interactions of neighborhood life
　　neighborhood life社区生活
　　选项A并未对应题干中的According to the author　而是对应原文中的some medical experts suggest that
　　3.标准答案是C)brings more benefits than damage to its users，但我认为应该选D)does harm as well as good to its users，对应原文最后一句If so, air-conditioning is only like many other greatly useful technical developments(positive words)that liberate man from nature by increasing his productivity and power in some way - while indirectly weakening him in others(negative words)，于是does harm as well as good to its users.
　　4.D)Consumers是最精确的。原文直接批判空调的一句话是forced families into retreating into families with closed doors and shut windows, reducing the interactions of neighborhood life，显然according to the author，consumers为从空调中受益最少的。而ABC三个选项，BC可以作为by increasing his productivity的受益者，A的工作性质则完全与空调无关，ABC甚至也都可以成为D的一种。
　　5.C)Critical对应原文It has, at will, forced，听起来很像批判。
　　at will随意　任意