新概念英语四 Lesson 1 Finding fossil man 发现化石人
新概念英语四 Lesson 1 Finding fossil man 发现化石人Lesson 1 Finding fossil man 发现化石人First listen and then answer the following question.
听录音，然后回答以下问题。Why are legends handed down by s
新概念英语四 Lesson 3 Matterhorn man
新概念英语四 Lesson 3 Matterhorn manLesson 3 Matterhorn man
马特霍恩山区人First listen and then answer the following question.
听录音，然后回答以下问题。What was the main objective of e
新概念英语四 Lesson 2 Spare that spider
新概念英语四 Lesson 2 Spare that spiderLesson 2 Spare that spider
不要伤害蜘蛛First listen and then answer the following question.
听录音，然后回答以下问题。How much of each year do spid
新概念英语四 Lesson 5 Youth
Lesson 5 Youth
青年First listen and then answer the following question:
How does the writer like to treat young people? People are always talking abou
新概念英语四 Lesson 4 Seeing hands
新概念英语四 Lesson 4 Seeing handsLesson 4 Seeing hands
能看见东西的手First listen and answer the following question.
听录音，然后回答以下问题。How did Vera discover she had this gift of sec
新概念英语四 Lesson 7 Bats
新概念英语四 Lesson 7 BatsLesson 7 Bats
蝙蝠First listen and then answer the following question.
听录音，然后回答以下问题。In what way does echo-location in bats play an utilitarian
新概念英语四 Lesson 6 The sporting spirit
新概念英语四 Lesson 6 The sporting spiritLesson 6 The sporting spirit
体育的精神First listen and then answer the following question.
听录音，然后回答以下问题.How does the writer describe s
新概念英语四 Lesson 9 Royal espionage
新概念英语四 Lesson 9 Royal espionageLesson 9 Royal espionage
王室谍报活动First listen and then answer the following question.
听录音，然后回答以下问题。What important thing did King Alfre
新概念英语四 Lesson 8 Trading standards
新概念英语四 Lesson 8 Trading standardsLesson 8 Trading standards
贸易标准First listen and then answer the following question.
听录音，然后回答以下问题。What makes trading between rich co
Finding fossil man
We can read of things that happened 5,000 years ago in the Near East, where people first learned to write. But there are some parts of the world where even now people cannot writ
新概念英语四 Lesson 10 Silicon valley
Lesson 10 Silicon valley
硅谷First listen and then answer the following question.
听录音，然后回答以下问题。What does the computer industry thrive on apart from anarchy? Technology t
Matterhorn man Modern alpinists try to climb mountains by a route which will give them good sport, and the more difficult it is, the more highly it is regarded. In the pioneering days, however, thi
Spare that spider Why, you may wonder, should spiders be our friends? Because they destroy so many insects, and insects include some of the greatest enemies of the human race. Insects would make it i
Youth People are always talking about 'the problem of youth'. If there is one -- which I take leave to doubt -- then it is older people who create it, not the young themselves. Let us get down to
Seeing hands Several cases have been reported in Russia recently of people who can detect colours with their fingers, and even see through solid and walls. One case concerns and eleven-year-old sc
Bats Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian r
The sporting spirit I am always amazed when I hear people saying that sport creates goodwill between the nations, and that if only the common peoples of the would could meet one another at football
Royal espionage Alfred the Great acted his own spy, visiting Danish camps disguised as a minstrel. In those days wandering minstrels were welcome everywhere. They were not fighting men, and their h
Trading standards Chickens slaughtered in the United States, claim officials in Brussels, are not fit to grace European tables. No, say the American: our fowl are fine, we simply clean them in a di
How to grow old
Some old people are oppressed by the fear of death. In the young there is a justification for this feeling. Young men who have reason to fear that they will be killed in battle ma
Silicon valley Technology trends may push Silicon Valley back to the future. Carver Mead, a pioneer in integrated circuits and a professor of computer science at the California Institute of Techno
The search for oil
The deepest holes of all made for oil, and they go down to as much as 25,0000 feet. But we not need to send men down to get the oil our, as we must with other mineral deposits.
Banks and their customers
When anyone opens a current account at a bank, he is lending the bank money, repayment of which he may demand at any time, either in cash or by drawing a cheque in favou
Secrecy in industry
Two factors weigh heavily against the effectiveness of scientific research in industry. One is the general atmosphere of secrecy in which it is carried out, the other the lac
The Butterfly Effect
Beyond two or three days, the world's best weather forecasts are speculative, and beyond six or seven they are worthless.
The Butterfly Effect is the reason. For small pie
A man-made disease
In the early days of the settlement of Australia, enterprising settlers unwisely introduced the European rabbit. This rabbit had no natural enemies in the Antipodes, so that it