新概念英语第三册Lesson47 Too high a price?练习题

Lesson 47 Too high a price? 一、选择正确的答案。 1.Some plants are so sensitive_______pollution that they can only survive in a perfectly clean environment. A.from B.against C.to D.with 2.Your story about the frog turning into a prince is________ nonsense. A.sheer B.shear C.shield D.sheet 3. The twentieth century has witnessed an enormous worldwide political, economic and cultural________ . A.tradition B.transportation C.transmission D.transformation 4.The scenic splendors of the Rocky Mountains are________ . A.inevitable B.constant C.overwhelming D.potential 5.Every day the chimneys of factories pour a large volume of smoke to the air to________ it. A.crash B.pollute C.spot D.stain 6.She________ that there was a mouse under the bed. A.roared B.exclaimed C.whistled D.screamed 7.The teacher had both extensive knowledge and________ scholarship. A.profound B.valid C.decent D.upright 8.The traffic noise is a constant________ to city dwellers. A.disturbance B.discrimination C.irritation D.irregularity 9.The dress is carefully styled for________ comfort. A.maximum B.minimum C.possible D.practical 10.He has made an important________ to the company's success. A.conclusion