短文语法填空
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为1--10的相应位置上。
Scientists have developed a non-stick chewing gum. The new gum can _1_____ (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 in 2008. ___2___ it catches on(流行), the product will solve __3___ major headache for present authorities around the world.
“The advantage of our Clean Gum is that _4_______ has a great taste, it is easy to remove and has the potential to be __5________ (environment) degradable (可降解的),” said Terence Cosgrove, a professor of chemistry __6 ___ helped to found a company called Revolymer to commercialize the technology.
Today’s chewing gums are made from synthetic(人工制造的) latex(植物的乳汁), which is resistant _7____ the weather and is strongly sticky. The new gum adds a special polymer to modify(修改，改变) its properties(特性), _8 _____ (make) it far __9 ___ sticky.
In two street trials, other commercial gums remained stuck to the pavement ___10 ___ Clean Gum came away(脱掉，脱落) naturally in all cases.
【参考答案】（11）
6. be removed 2. If 3. a 4. it 5. environmentally
