1.In 1850 , Yale University established Sheffield Scientific School,......... A.engineers were educated there B. where engineers were educated C. in which engineer educated C. where were engineers educated 2. The speech ......... we listened last night was informative. A. to which B. which to C.to that D.that 3. I pulled off the sheets ..... the furniture. A.to cover B.covered C.that covering D.covering 4.The Tate Modern........... in 2000 is a huge art gallery in London. A.opening B. open C.be opened D.opened 5.i was introduced to a man ........... brother is my teacher. A. which B. whose C.that D . whom 6.Melanie was the only person ...... a letter of thanks. A.wrote B.written C.to write D.writing 7........... might have been crossed by raft during the Stone Age , is the world's largest ocean. A.The Pacific Ocean which B.The Pacific Ocean , which C.The Pacific Ocean that D. The Pacific Ocean , what 8.The Earth will be a happy planet where human beings , animals and plants .......... co-exist. A.peaceful B peacefully C.peace D.peacefulness 9.the chemical............ from cars and factories make the air , water and soil dangerously dirty. A.pollute B.pollutants C.polluted D.pollution 10. Many species of rare animals are in ........ of becoming extinct. A. endanger B.dangerously C.dangerous D.danger 11. What exactly is the influence of television....... children? A.on B.in C.with D.at 12. They started a campaign to...... smoking among teenagers. A. encourage B.decrease C.Discourage D.prohibit 13.If traffic moves at slow speeds , the number of accidents is........... A. turned off B.put away C. cut down D. pulled back 14. Tom and Bob are duscussing about choosing a present for their friend. - Tom :" We should use the Flower Telegram Service to send her a bunch of red roses. - Bob: "............................................" A. that's a good idea B. it's nice of you to say so C. never mind D. Don't mention it 15. Peter and Thomas are talking about the reason why nature is threatened. Peter: " I think the primary cause is discharging chemical pollutants into the environment" Thomas :"............................" A. Don't mention it B. I could'n agree more C. That's a nice compliment D. What a good idea!