时态语态知识考查(2011 届汕头市四校联考) Scientists have developed a nonstick chewing gum. The new gum can 16.__________ (remove) easily from pavements, shoes and clothes. It's the result of polymer(聚合体) research at the University of Bristol and could be launched commercially next year. 17.__________ it catches on, the product will solve 18.__________ major headache for present authorities around the world. “The advantage of our Clean Gum is that 19.__________ has a great taste, it is easy to remove and has the potential to be 20.__________ (environment) degradable( 可 降 解 的 ) ， ” said Terence Cosgrove, a professor of chemistry 21.__________ helped to found a company called Revolymer to commercialize the technology. Today's chewing gums are made from synthetic(人造的，合成的) latex(胶乳), which is resistant 22.__________ the weather and is strongly sticky. The new gum adds a special polymer to modify its properties, 23.__________ (make) it far 24.__________(sticky). In two street trials, other commercial gums remained stuck to the pavement 25.__________ Clean Gum came away naturally in all cases.【答案及解析】 16. be removed 考查谓语动词的时态语态，该句主语和谓语的关系显然是主语为动作的承受者，用被动语态；在情态动词后，接动词原形，故应该填 be removed。 17. If 考查状语从句的连接词，句意是“如果这种清洁香口胶流行 (catch on) 的话，将能解决一件让世界上当代政府头疼的事”，引导条件状语从句，用 if。 【答案及解析】 18. a 考查不定冠词的使用，可数名词单数前面应加冠词或形容词性的物主代词，该处填 a 表示 one 的意思。 19. it 考查代词的使用，分析句子成分可知，that 从句缺少主语，故应该填 it 来指代这种清洁型香口胶。 【答案及解析】 20. environmentally 考查词性变换，修饰形容词作状语，用副词， 故应该填 用心 爱心 专心1environmentally。 21. who 考查定语从句的连接词，引导定语从句...
