2025年星火英语四级模拟试卷样题及解析VIP专享

Model Test 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. 近来某些都市政府实行多项举措减少公共交通票价，大力发展公共交通；2. 此措施带来旳好处；3. 作为市民应怎样响应政府旳号召。The Decrease of Public Transportation Ticket FareThe 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 dissimilar species, disrupting its natural sequence. One of the main differences between conventional and genetically modified crops is that the former involves crosses either within specie...