How High Can You Jump? Fleas trainers have observed a strange habit of fleas while training them. Fleas are trained by putting them in a cardboard box with a top on it. The fleas will jump up and hit the top of the cardboard box over and over and ove

发表于:2019-01-17 / 阅读(95) / 评论(0) 分类 英语专业四级听力50篇

Natural Resources Through the changes in the ways of making a living in a family over several generations, the cartoon aims at sounding a warning against man's wasteful use of natural resources and emphasizing the urgent need to preserve these resour

发表于:2018-12-18 / 阅读(105) / 评论(0) 分类 英语专业四级听力50篇

Population Growth It is well-known that there has been a drastic increase in world population. But it is probably less well-known that the extinction rate of wildlife species is experiencing a parallel trend. Take the United States for instance. In 1

发表于:2018-12-18 / 阅读(96) / 评论(0) 分类 英语专业四级听力50篇

House and Home House and home are two words that have similar meanings. House and home both refer to places where people live. However, there is a difference between them. Home is often referred to as the place that we live in with our families. Sadl

发表于:2018-12-18 / 阅读(92) / 评论(0) 分类 英语专业四级听力50篇

Automobiles It is impossible to say that any one man invented the automobile. Many individuals living and working in different countries and at different times contributed to its development. Many of the discoveries that went into the creation of the

发表于:2018-12-18 / 阅读(115) / 评论(0) 分类 英语专业四级听力50篇

The Influence of Life In the early times when human beings hunted and gathered food, they were not in control of their environment. They could only interact with their surroundings as the other lower animals did. When they learned to make fire, howev

发表于:2018-12-18 / 阅读(93) / 评论(0) 分类 英语专业四级听力50篇

Gardening in America Believe or not, 43,000,000 Americans are gardening. That is about one in six. Gardeners, of course, come in many varieties. Not surprisingly, most of them are people who live in the suburbs, and enjoy planting flowers, or maybe a

发表于:2018-12-18 / 阅读(124) / 评论(0) 分类 英语专业四级听力50篇

Our Concern The histoly of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and the habits of the earth's vegetation and its animal life have been molded by the environ

发表于:2018-12-18 / 阅读(99) / 评论(0) 分类 英语专业四级听力50篇

Sleep Why is it so difficult to fall asleep when you are overtired? There is no one answer that applied to every individual. It is possible to feel tired physically and still be unable to fall asleep, because while your bocdy may be exhausted, you do

发表于:2018-12-18 / 阅读(77) / 评论(0) 分类 英语专业四级听力50篇

Apology Helps It is never easy to admit you are in the wrong. Being human, we all need to know the art of apologizing. Look back with honesty and think how often you have judged roughly, you said unkind things, and pushed yourself ahead at the expens

发表于:2018-12-18 / 阅读(137) / 评论(0) 分类 英语专业四级听力50篇

Reading Nowadays few of us read books after we leave school. This is rather disturbing, for one should know that books are no less necessary to ones mental life than fresh air is to ones physical life. From good reading we can derive companionship, e

发表于:2018-12-18 / 阅读(132) / 评论(0) 分类 英语专业四级听力50篇

A Henpecked Husband and His Wife There was once a large, fat woman who had a small, thin husband. He had a job in a big company and was given his weekly wages every Friday evening. As soon as he got home on Fridays, his wife used to make him give her

发表于:2018-12-01 / 阅读(169) / 评论(0) 分类 英语专业四级听力50篇

One of the best means of understanding the people of any nation is watching what they do with their non-working time. Most English men, women and children love growing things, especially flowers. Visitors to England in spring, summer, or autumn are l

发表于:2018-12-01 / 阅读(169) / 评论(0) 分类 英语专业四级听力50篇

Real policemen, both in Britain and the U. S., hardly recognize any common points between their lives and what they see on TV---if they ever get home in time. Some things are almost the same, of course, but the policemen do not think much of them. Th

发表于:2018-12-01 / 阅读(245) / 评论(0) 分类 英语专业四级听力50篇

How much living space does a person need? What happens when his space needs are not met? Scientists are doing experiments on rats to try to determine the effects of overcrowded conditions on man. Recent studies have shown that the behaviour of rats i

发表于:2018-12-01 / 阅读(130) / 评论(0) 分类 英语专业四级听力50篇

In 1945, representatives of 50 nations met to plan this organization. It was called the United Nations. After the war, many more nations joined. There are two major parts of the United Nations. One is called the General Assembly, m the General Assemb

发表于:2018-12-01 / 阅读(132) / 评论(0) 分类 英语专业四级听力50篇

We use plastic wrap to protect our foods. We put our garbage in plastic bags or plastic cans. We sit on plastic chairs, play with plastic toys, drink from plastic cups, and wash our hair with shampoo from plastic bottles! Plastic does not grow in nat

发表于:2018-12-01 / 阅读(296) / 评论(0) 分类 英语专业四级听力50篇

Are supermarkets designed to persuade us to buy more? Fresh fruit and vegetables are displayed near supermarket entrances. This gives the impression that only healthy food is sold in the shop. Basic foods that everyone buys, like sugar and tea, are n

发表于:2018-12-01 / 阅读(125) / 评论(0) 分类 英语专业四级听力50篇

Albert Einstein was born in Germany in 1879. His号father owned a factory that made electrical devices. His mother enjoyed music and books. His parents were Jewish but they did not observe many of the religions rules. Albert was a quiet child who spe

发表于:2018-12-01 / 阅读(164) / 评论(0) 分类 英语专业四级听力50篇

With the increase in the general standard of living, some ordinary Chinese families begin to afford a car. Yet opinions of the development of a private car vary from person to person. It gives a much greater degree of comfort and mobility. The owner

发表于:2018-12-01 / 阅读(242) / 评论(0) 分类 英语专业四级听力50篇