1、专业英语四级（听写听力）模拟试卷 154及答案与解析 一、 PART I DICTATION Directions: Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, the passage wi
2、ll be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work. 专业英语四级（听写听力）模拟试卷 154答案与 解析 一、 PART I DICTATION Directions: Listen to the following passage. Altogether the passage
3、will be read to you four times. During the first reading, which will be done at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done a
4、t normal speed again and during this time you should check your work. 1 【正确答案】 Teaching Assistants A teaching assistant usually works about twenty hours each week. / Teaching assistants are paid to help professors teach students in entry-level study programs. / Generally, the professor gives a talk,
5、 or lecture, / to a large group of students one or two times a week. / The teaching assistant meets with smaller groups of students during the week. / The T.A. gives tests and reads any homework or reports the students may be required to write. / Teaching assistants also meet with students who seek
6、help. / They attend teaching meetings. / And some working with science professors help to organize laboratory equipment. / 【知识模块】 听写 2 【正确答案】 Trees Trees are the oldest living organisms on earth. / The great age of trees makes them useful for all sorts of scientific research. / Besides, trees also h
7、ave a lot to teach us about being part of a community / and how cooperation is better for a society than competition. / A community of trees growing together / share all of the available resources with each other. / They do this through their roots, through the soil, / and also through the networks
8、of tiny fungi growing in the soil between them. / They dont only share with trees of the same species. / Any type of tree can benefit. / 【知识模块】 听写 3 【正确答案】 Pedestrian Safety Roads are dangerous places for people on foot. / So, it is important for pedestrians to be aware / that traffic may be approac
9、hing from unexpected directions. / Here is some general knowledge to bear in mind. / First, pedestrians are not allowed to walk along or cross any motorway at any time. / Second, its advisable to use crossings whenever you can / although its not illegal to cross the road at any point apart from moto
10、rways. / Third, you may cross the road when the green man is showing. / But you must not start to cross if the light is flashing. / 【知识模块】 听写 4 【正确答案】 Open-source Software Open-source software is computer software / that is available to the general public in source code form. / If a person has enoug
11、h knowledge about computers and computer programming, / he or she can change the programs source code. / The source code is like a set of directions that show the program how to operate. / People change the codes so that the program will operate / in a way that will meet their needs. / Sometimes cha
12、nging the code will make the program run faster. / Or it will take problems out of the program. / These problems can cause a computer program to shut down. / 【知识模块】 听写 5 【正确答案】 Marathon Races in America Many Americans enjoy running. / And one kind of race, the marathon, has captured the imagination
13、of people all over the nation. / The race has roots in ancient history. / The Boston Marathon in Massachusetts is the oldest marathon which was started in 1897. / It was not until 1972 that women could officially compete in Boston. / Todays marathons do not bar anyone because of sex or age. / Racing has expanded to average runners. / Hundreds of these races are organized in America every year, / which are often in connection with a cause / like fighting disease or supporting local hospitals and schools. / 【知识模块】 听写
