1. Our city ......... from different kinds of pollution: water, air and noise A. is suffering B. are suffering C. suffer D. had suffered 2. Several tropical storms ........... our country recently A. struck B. have struck C. are striking D. strike 3. The victims on the roofs of the houses ......... with food and water by the rescue team A. provided B. will be provide C. were provided D. had provided 4. If we ........... soon, the pollution will get much worse A. don't act B. didn't act C. will not act D. hadn't acted 5. I learnt from the news on TV that the earthquake ........... hundreds of houses A. destroys B. were destroyed C. had destroyed D. are destroying 6. People who cannot hear or speak often communicate using ............. A. pictures B. sounds C. codes D. signs 7. If the teacher were here now, we'd ask him the difference ......... " science " and " technology " A. among B. of C. between D. for 8. The ........ in technology allow astronomers to know more about outer space A. development B. science C. exploration D. discovery 9. Alexander Graham Bell was a great ..........., who invented the telephone A. developer B. conservationist C. scientist D. explor 10. To generate cheap and clean energy, instead of burning fossil fuels, scientist have developed ......... A. oil B. solar panels C. electricity D. coal burning