1、专业英语四级（听写听力）模拟试卷 54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 54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】 How Are Our Bodies Made? The human body is like a complicated machine made of many interconnected parts. At the smallest scale, the body is co
5、mposed of about 100 trillion tiny living cells. There are different kinds of cells, each with its own task to do. For example, nerve cells carry messages of sensations and pain to the brain. Groups of similar cells are organized together to make tissues, such as skin and muscle. In turn, various typ
6、es of tissues combine to form organs. Among the bodys major organs are heart, brain, stomach, and kidneys. Finally, groups of organs and other body parts work together as organ systems. The immune system, for example, is a complicated mass of organs and chemicals whose job is to combat infection and
7、 diseases. The heart and veins make up circulatory blood system, which keeps blood flowing around the body. 【知识模块】 听写 2 【正确答案】 Animal Chatter Among the most unusual and varied sounds on earth are those made by animals. Monkeys chatter and shriek, birds chirrup and squawk, and bullfrogs produce an am
8、azingly loud noise to attract mates and drive away other males during the breeding season. Most animal sounds, like those of the bullfrog, serve as a form of communication. They may warn, attract, or help an individual to identify others nearby. Whales and dolphins produce an especially complex vari
9、ety of sounds. So much so that scientists have suggested they may have an advanced language of their own. What is certain is that these creatures can call to one another with sounds that are both below and above the range of human hearing. Dolphins seem to have another use for the ultrasonic “clicks
10、 they are capable of producing. With a powerful, narrow beam of ultrasound they can stun a fish and then grab it in their jaws before it has a chance to recover. 【知识模块】 听写 3 【正确答案】 Where Did Our Calendar Come from? People have not always had a strong interest in the past or the future. Long ago, th
11、ey did not need to keep an exact record of the changing seasons. But when men and women began to settle and depend heavily on farming, they needed to form a calendar. If crops were not sown and harvested at the right time of year, there would not be enough food for people to eat. This was especially
12、 important in ancient Egypt where life revolved around the annual flooding of the river Nile. Egyptians noticed that the Nile floods came at about the same time each year. They always started around the day when the bright star Sirius appeared on the horizon just before sunrise. As a result, this da
13、y was taken to mark the start of the Egyptian year. The year was then split up into 12 months of 30 days. Five extra days were added at the end to make 365 in all. Using this scheme, the Egyptian calendar kept reasonably in step with the seasons. 【知识模块】 听写 4 【正确答案】 Shortcuts to the Future Within the
14、 last 100 years, the world has changed beyond all recognition. To someone from the year 1900, jet aircraft, television sets, computers, microwave ovens and many other modern devices would seem like magic. A century ago, people traveled slowly by horse-drawn carriage. Today, they glide along freeways
15、 in cars at a mile a minute. People can use mobile phones to talk to other people anywhere on Earth. They can watch events in another country as they happen via signals transmitted by a satellite far out in space. Given that change has come so quickly, imagine what things may be like in the year 210
16、0 or beyond. Perhaps, by then, people will have colonized other planets around the Sun. Or there may be computers that are more intelligent than human beings. The possibilities are endless, and we can scarcely begin to imagine them all. 【知识模块】 听写 5 【正确答案】 Hear, Hear People who have limited hearing c
17、an have sounds made louder by hearing aids. But it doesnt necessarily mean they are clearer. The problem is that ordinary hearing aids amplify all the sounds they pick up by the same amount. They dont allow for the fact that deafness affects different people in different ways. Very often, people who
18、 are deaf can hear some frequencies of sound better than others. The frequency of sound determines pitch. For example, a high-frequency note has a high pitch. A low-frequency note has a low pitch. Deafness usually affects sounds of higher pitch more than sounds of lower pitch, which makes understand
19、ing speech, in particular, very difficult. To help get around this problem, researchers have developed hearing aids that can amplify some sounds more than others. Now medical science has developed a number of ways to restore partial hearing to those who have lost or have never been able to use this sense. 【知识模块】 听写
