1、专业英语四级（听写听力）模拟试卷 183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 183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】 Varieties of Milk Supermarkets now stock many different varieties of milk. / The most common is still cows milk, / but others include sheep and goats milk, as well as a number of plant-based substitutes. / Milk is general
5、ly distinguishable by its fat content. / Whole milk is relatively high in fat / and certainly semi-skimmed and skimmed milk can be labelled as low-fat food. / Contrary to popular belief, lowering the fat content in milk does not affect the calcium content, / so an adequate calcium intake can still b
6、e obtained from lower-fat dairy products. / However, low-fat milk contains less energy and lower amounts of fat-soluble vitamins / and isnt suitable for children under two years. / 【知识模块】 听写 2 【正确答案】 Minerals Minerals are non-organic substances which contain the element carbon. / But they are vital
7、for good health / and have many key roles to play in the body. / Minerals needed daily are present in almost all cells of the body. / Acute imbalances of the daily needed minerals can be potentially fatal. / On one hand, mineral shortages may lead to health problems / such as failure to thrive in ba
8、bies and an increased risk of heart disease. / On the other hand, taking in too many dietary minerals can also harm the body. / For example, too much calcium in the blood / may cause vomiting, loss of appetite and irregular heart rate. / 【知识模块】 听写 3 【正确答案】 Disguise Many species of animal practise ta
9、ctics to disguise their appearance, / usually by blending in with their environment. / Such tactics mainly depend on the physical characteristics or behavior of a species and its enemies. / Usually environmental and behavioral factors can cause species to employ a variety of tactics. / And the most
10、common one is background matching, / in which a species conceals itself by resembling its environment. / In its simplest form, animals such as deer and squirrels / resemble the earth tones of their environment. / Another important tactic is to have disruptive color and pattern. / This form of disrup
11、tion causes attackers to misidentify what they are looking at. / 【知识模块】 听写 4 【正确答案】 How to Apply to an American College The American university system is one of the best in the world, / but competition for admission can be steep. / The application process itself is a labyrinth / that most American s
12、tudents approach only with the help of school councilors, parents and peers. / Above all else, applying to American colleges and universities requires patience and persistence. / The application process consists of filling out the Common Application, supplemental applications, / writing a personal s
13、tatement, and any necessary supplemental essays. / In addition, all applicants are required to submit standardized test scores, / letters of recommendation, high school transcripts, / along with an application fee. / 【知识模块】 听写 5 【正确答案】 Forest Fire Forest fire or wildfire is often used to signify an
14、uncontrolled intense fire / that breaks out in the wooded areas / due to many factors ranging from natural to man-made causes. / Wildfires can be witnessed throughout the world and they usually occur in cycles. / Mild forest fires are often considered beneficial, / as growth of many plant species de
15、pend on it. / Many plant species also depend on wildfires for reproduction. / However, the large forest fires can have serious damaging effect on the surrounding environment. / Some important causes of it are lightning and volcanic eruptions. / Besides these, sparks from rock falls can also cause forest fires. / 【知识模块】 听写
