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
__________ 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 resistan