每天一练：2008年大学英语六级试题：第三十一期

Directions：This part consists of a short passage. In this passage，there are altogether 10 mistakes, one in each numbered line. You may have to change a word, add a word or delete a word. Mark out the mistakes and put the corrections in the blanks provided. If you change a word，cross it out and write the correct word in the corresponding blank. If you add a word, put an insertion mark(∧)in the right place and write the missing word in the blank. If you delete a word, cross it out and put a slash(/) in the blank.　　
　　Almost every new innovation goes through three phases.
　　When initially introducing into the market, the process 1.
　　of adoption is slow. The early models are expensive and
　　hard to use, and perhaps even unsafe. The economic
　　impact is relatively great. 2.
　　The second phase is the explosive one, where the innovation
　　was rapidly adopted by a large number of people. It gets 3.
　　cheaper and easier to use and becomes something familiar.
　　And then in the third stage, diffusion of the innovation
　　slows down again, as if it permeates out across the economy. 4.
　　During the explosive phase, whole new industries spring
　　up to produce the new product or innovation, and to service
　　it. For example, during the 1920s, there was dramatic 5.
　　acceleration in auto production, from 1.9 million in 1920
　　to 4.5 million in 1929. This boom was accompanied with all 6.
　　sorts of other essential activities necessary for an
　　auto-based nation: Roads had to been built for the cars to 7.
　　run on; refineries and oil wells, to provide the gasoline;
　　and garages, to repair it. 8.
　　Historically, the same pattern is repeated again and again
　　with innovations. The construction of the electrical system
　　requested an enormous early investment in generation and 9.
　　distribution capacity. The introduction of the radio was
　　followed by a buying spree (无节制的狂热行为) by Americans
　　what quickly brought radios into almost half of all households 10.
　　by 1930, up from nearly none in 1924.
　　答案：
　　1. introducing改为 introduced；
　　2. great 改为small；
　　3. was改为is；
　　4. as 后面的 if 去掉；
　　5. was 后面加a；
　　6.with改为by；
　　7. been改为be；
　　8. it改为them；
　　9. requested改为required；
　　10. what改为that。