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新概念英语四册 Lesson 1:Finding Fossil man2010-08-11- 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 word where even now people cannot write.
- 新概念英语四册 Lesson 2:Spare that spider2010-08-11
- 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.
- 新概念英语四册 Lesson 3:Matterhorn man2010-08-10
- 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.
- 新概念英语四册 Lesson 4:Seeing hands2010-08-10
- Several cases have been reported in Russia recently of people who can detect colours with their fingers, and even see through solid and walls.
- 新概念英语四册 Lesson 5:Youth2010-08-09
- 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.
- 新概念英语四册 Lesson 6:The sporting spirit2010-08-09
- 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 or cricket, they would have no inclination to meet on the hattlefield.
- 新概念英语四册 Lesson 7:Bats 蝙蝠2010-08-08
- 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 role.
- 新概念英语四册 Lesson 8:Trading standards2010-08-08
- 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 different way.
- 新概念英语四册 Lesson 9:Royal espionage2010-08-07
- Alfred the Great acted his own spy, visiting Danish camps disguised as a minstrel. In those days wandering minstrels were welcome everywhere.
- 新概念英语四册 Lesson 10:Silicon valley2010-08-07
- 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 Technology, notes there are now work-stations that enable engineers to design, test and produce chips right on their desks, much the way an editor creates a newsletter on a Macintosh.
- 新概念英语四册 Lesson 11:How to grow old2010-08-06
- 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 may justifiably feel bitter in the thought that they have cheated of the best things that life has to offer.
- 新概念英语四册 Lesson 12:Banks and their customers2010-08-06
- 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 favour of another person.
- 新概念英语四册 Lesson 13:The search for oil2010-08-05
- 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.
- 新概念英语四册 Lesson 14:The Butterfly Effect2010-08-05
- Beyond two or three days, the world's best weather forecasts are speculative, and beyond six or seven they are worthless.
- 新概念英语四册 Lesson 15:Secrecy in industry2010-08-04
- 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 lack of freedom of the individual research worker.
- 新概念英语四册 Lesson 16:The modern city2010-08-04
- In the organization of industrial life the influence of the factory upon the physiological and mental state of the workers has been completely neglected.
- 新概念英语四册 Lesson 17:A man-made disease2010-08-03
- 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 multiplied with that promiscuous abandon characteristic of rabbits.
- 新概念英语四册 Lesson 18:Porpoises2010-08-03
- There has long been a superstition among mariners that porpoises will save drowning men by pushing them to the surface, or protect them from sharks by surrounding them in defensive formation.
- 新概念英语四册 Lesson 20:Snake poison2010-08-02
- How it came about that snakes manufactured poison is a mystery. Over the periods their saliva, a mild, digestive juice like our own, was converted into a poison that defies analysis even today.
- 新概念英语四册 Lesson 19:The stuff of dreams2010-08-02
- It is fairly clear that sleeping period must have some function, and because there is so much of it the function would seem to e important.
- 新概念英语四册 Lesson 23:Bird flight2010-08-01
- No two sorts of birds practise quite the same sort of flight; the varieties are infinite; but two classes may be roughly seen. Any shi that crosses the Pacific is accompanied for many days by the smaller albatross, Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.