1．2011•安徽高考the factory used 65 percent of the raw materials, the rest of which________ saved for other purposes. a．is b．are c．was d．were
解析：考查主谓一致。句意：这家工厂用了65%的原材料，剩余的被作为它用。raw materials 是先行词，which 引导的定语从句中，the rest 作主语；the rest 作主语时，谓语的数由其后的名词而定，而which＝raw materials，所以谓语要用复数形式；由主句中的时态可知，从句中要用一般过去时态。故选d项。答案：d
2．2011•湖南高考one¬third of the country________ covered with trees and the majority of the citizens ________ black people.
a．is; are b．is; is c．are; are d．are; is
解析：考查主谓一致。“国家三分之一的领土”在概念上是单数，故系动词用单数；而“国家公民的大多数”是复数，故系动词用复数。句意：这个国家三分之一的领土被树木覆盖且多数公民为黑人。故选a项。答案：a
