1、专业英语四级（听写听力）模拟试卷 25及答案与解析 一、 PART I DICTATION (15 MIN) Directions: Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. For the second and third readings, the pa
2、ssage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minute 专业英语四级（听写听力）模拟试卷 25答案与解析 一、 PART I DICTATION (15 MIN) Directions: Listen to
3、 the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read 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
4、 of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minute 1 【正确答案】 Light Pollution We usually think of pollution as a harmful waste substance that threatens the air and water. But some people have become conce
5、rned about another kind of pollution. It can be everywhere, depending on the time of day. And it is not thought of as a substance. It is light. The idea of light pollution has developed with the increase of lights in cities. In many areas, this light makes it difficult or impossible to observe stars
6、 and planets in the night sky. Light pollution threatens to reduce the scientific value of research telescopes. Light pollution is the result of wasted energy. Bright light that shines into the sky is not being used to provide light where it is needed on Earth. Lights that are brighter than necessar
7、y also cause light pollution. Recently, two Italian astronomers and an American environmental scientist created a world map of the night sky. The map shows that North America, Western Europe and Japan have the greatest amount of light pollution. 【知识模块】 听写 2 【正确答案】 Monkeys That Eat Less Live Longer A
8、 study of monkeys over a twenty-year period suggests that eating less may extend life and prevent disease. American researchers said they believe their findings could apply to people as well. Half of the monkeys were permitted to eat as much as they wanted. The other half ate a controlled diet. The
9、researchers found that thirty-seven percent of the monkeys that ate as much as they wanted had died of causes related to aging after twenty years. In comparison, only thirteen percent of the monkeys on restricted diets had died. Extended life was not the only observable difference between the two gr
10、oups. The monkeys that ate less had half the amount of heart disease and cancer. In addition, there is also a difference in the appearance. The monkeys that ate less look younger and healthier than fatter monkeys on a normal diet. The researchers say this study is not complete and that they will con
11、tinue to observe the remaining monkeys throughout their lives. 【知识模块】 听写 3 【正确答案】 Dangerous Lead-based Paint Common Around the World A new study shows that lead-based paint remains a worldwide threat to public health. Paint containing lead is a major cause of lead poisoning in children. The heavy me
12、tal enters the body when children breathe the paint dust or fumes in the air. Or when babies put their mouth on painted surfaces or swallow pieces of paint. Lead can damage the brain and the nervous system. It can decrease intelligence, create behavior problems and slow a childs growth. Researchers
13、tested new household paints from twelve countries in Africa, Asia and South America. The paints were sold under different brand names. The study found that almost three-fourths of the brands had dangerously high levels of lead. The professor says high quality paint can be produced without lead. He a
14、nd his team are calling for a worldwide ban on lead-based paint. He says many parts of the world are doing too little to correct the problem of lead poisoning in children. He notes that research has found no safe level of lead. 【知识模块】 听写 4 【正确答案】 Expressions That Are Old and True A proverb is a shor
15、t, well-known saying that expresses a common truth or belief. Many proverbs give advice about how to live. For example, my son is just like his father in many ways. We often say the two of them prove the proverb that the apple does not fall far from the tree. My daughter is very short. She would lik
16、e to be taller. But I tell her that good things come in small packages, like diamonds and other jewels. Also, I tell them do not judge a book by its cover. Do not be fooled by appearances. Another proverb is, do not bite off more than you can chew. This means do not try to do more than you are able
17、to do. Finally, I always like this proverb: You can catch more flies with honey than with vinegar. Honey is sweet while vinegar is not. In other words, you can win people to your side more easily with gentle persuasion than by hostile actions. 【知识模块】 听写 5 【正确答案】 Death Valley: A Beautiful but Dangero
18、us Place Death Valley is a land of beautiful but dangerous extremes. There are mountains that reach more than three thousand meters into the sky. There is a place called Badwater that is the lowest area of land in the Western Hemisphere. If there were water there, it would be eighty-six meters below
19、 the level of the ocean. Death Valley can be dangerously cold during the winter months. Storms in the mountains can produce sudden flooding on the floor of the Valley. The extreme heat in summer has killed people in the past. It will continue to kill those who do not honor this extreme climate. Deat
20、h Valley does not forgive those who are not careful. It is a good example of the violence of nature. However, it would be wrong to think that nothing lives there. The Valley is full of life. Wild flowers grow very quickly after a little rain. Birds, snakes and other animals always enjoy their stay. 【知识模块】 听写
