摘要:英文文本 William S. Hart and the early 'Western' film First listen and then answer the following question.How did William Hart's childhood prepare him for his acting role in Western films？ Willi[阅读全文]

摘要:英文文本 Snake poison First listen and then answer the following question.What are the two different ways in which snake poison acts？ How it came about that snakes manufactured poison is a mystery[阅读全文]

摘要:英文文本 The stuff of dreams First listen and then answer the following question.What is going on when a person experiences rapid eye-movements during sleep？ It is fairly clear that sleeping perio[阅读全文]

摘要:英文文本 Porpoises First listen and then answer the following question.What would you say is the main characteristic of porpoises？ There has long been a superstition among mariners that porpoises[阅读全文]

摘要:英文文本 A man-made disease First listen and then answer the following question.What factor helped to spread the disease of myxomatosis？ In the early days of the settlement of Australia， enterpri[阅读全文]

摘要:英文文本 The modern city First listen and then answer the following question.What is the author's main argument about the modern city？ In the organization of industrial life the influence of the[阅读全文]

摘要:英文文本 Secrecy in industry First listen and then answer the following question.Why is secrecy particularly important in the chemical industries？ Two factors weigh heavily against the effectivene[阅读全文]

摘要:英文文本 The Butterfly Effect　　 First listen and then answer the following question.Why do small errors make it impossible to predict the weather system with a high degree of accuracy？ Beyond tw[阅读全文]

摘要:英文文本 The search for oil First listen and then answer the following question.What do oilmen want to achieve as soon as they strike oil？ The deepest holes of all made for oil， and they go down[阅读全文]

摘要:英文文本 Banks and their customers　 First listen and then answer the following question.Why is there no risk to the customer when a bank prints the customer's name on his cheques？ When anyone op[阅读全文]

摘要:英文文本 Silicon valley First listen and then answer the following question.What does the computer industry thrive on apart from anarchy？ Technology trends may push Silicon Valley back to the futu[阅读全文]

摘要:英文文本 Trading standards　　 First listen and then answer the following question. What makes trading between rich countries difficult？ Chickens slaughtered in the United States， claim officials[阅读全文]

摘要:英文文本 Bats First listen and then answer the following question. In what way does echo-location in bats play an utilitarian role？ Not all sounds made by animals serve as language， and we have[阅读全文]

摘要:英文文本 The sporting spiritFirst listen and then answer the following question.How does the writer describe sport at the international level？ I am always amazed when I hear people saying that spor[阅读全文]

摘要:英文文本 Youth First listen and then answer the following question: How does the writer like to treat young people? People are always talking about 'the problem of youth'. If there is one -- whi[阅读全文]

摘要:英文文本 Seeing hands First listen and answer the following question.How did Vera discover she had this gift of second sight? Several cases have been reported in Russia recently of people who can[阅读全文]

摘要:英文文本 Matterhorn man First listen and then answer the following question.What was the main objective of early mountain climbers? Modern alpinists try to climb mountains by a route which will give[阅读全文]

摘要:英文文本 Finding fossil man First listen and then answer the following question. Why are legends handed down by storytellers useful? We can read of things that happened 5,000 years ago in the Ne[阅读全文]

摘要:英文文本 From the earth: Greetings Listen to the tape then answer the question below. Which life forms are most likely to develop on a distant planet? Recent developments in astronomy have made it p[阅读全文]

摘要:英文文本 Predicting the future Listen to the tape then answer the question below. What was the 'future' electronic development that Leon Bagrit wasn't able to foresee? Predicting the future is no[阅读全文]