精选优质文档-倾情为你奉上 新编英语教程(高英)6练习册 3,6,7,8,11单元选择题答案Unit 31. It is not profitable to provide bus services in districts where the population is widely scattered.2. Sand is to glass as clay is to bricks.3. His test results for the whole term were not very consistent. He did well one week and badly the next.4. The novelist is a highly imaginative person with great talent.5. Mary is so sentimental that she cried for days when her pet died.6. The rainbow diss