星火：2008年12月英语四级模拟试卷样题及解析.doc

声明： 考试吧（E） 收集整理，转载请注明出自 服务：面向较高学历人群，提供计算机类，外语类，学历类，资格类，会计类，工程类，医学类等七大类考试的全套考试信息服务及考前培训. 　　Part Ⅰ Writing (30 minutes) 　　Directions: For this part, you are allowed 30 minutes to write a short essay entitled The Decrease of Public Transportation Ticket Fare. You should write at least 120 words following the outline given below: 　　1. 近来一些城市政府实施多项举措降低公共交通票价，大力发展公共交通; 　　2. 此措施带来的好处; 　　3. 作为市民应如何响应政府的号召。 　　The Decrease of Public Transportation Ticket Fare 　　Part Ⅱ Reading Comprehension (Skimming and Scanning)(15 minutes) 　　Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. 　　For questions 1-7,choose the best answer from the four choices marked A), B), C) and D). 　　For questions 8-10,complete the sentences with the information given in the passage. 　　The Debate Over Genetically Modified Foods 　　For thousands of years farmers have used a process of selection and cross breeding to continually improve the quality of crops. Traditional breeding methods are slow, requiring intensive labor: while trying to get a desirable trait in a bred species, undesirable traits will appear and farmers must continue the process over and over again until all the undesirables are bred out. In contrast, organisms acquire one specific gene or a few genes together through genetic modification, without other traits included and within a single generation. However, this technology too is inherently unpredictable and some scientists believe it can produce potentially dangerous results unless better testing methods are developed. Traditional breeding is based on sexual reproduction between like organisms. The transferred genes are similar to genes in the cell they join. They are conveyed in complete groups and in a fixed sequence that harmonizes with the sequence of genes in the partner cell. In contrast, bioengineers isolate a gene from one type of organism and collect it randomly into the DNA of a