新概念英语第四册Lesson 30 Exploring the sea-floor

Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea-surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land. The open sea was deep and mys

新概念英语第四册Lesson 27 The ‘Vasa’

Lesson 27 The 'Vasa' 瓦萨号 First listen and then answer the following question. 听录音，然后回答以下问题。 What happened to the 'Vasa' almost immediately after she was launched? From the seventeenth-century empire of Sweden, the story

新概念英语第四册Lesson 24 Beauty

Lesson 24 Beatuy 美 First listen and then answer the following question. 听录音，然后回答以下问题。 What do glimpses of beauty, either in nature or art, often suggest to the human mind? A young man sees a sunset and, unable to understand

新概念英语第四册Lesson 19 The stuff of dreams

Lesson 19 The stuff of dreams 话说梦的本质 First listen and then answer the following question. 听录音，然后回答以下问题。 What is going on when a person experiences rapid eye-movements during sleep? It is fairly clear that sleeping

新概念英语第四册Lesson 20 Snake poison

Lesson 20 Snake poison 蛇毒 First listen and then answer the following question. 听录音，然后回答以下问题。 What are the two different ways in which snake poison acts? How it came about that snakes manufactured poison is a mystery. Over

新概念英语第四册Lesson 21 William S. Hart and the ear

Lesson 21 William S. Hart and the early 'Western' film 威廉.S. 哈特和早期限的西部影片 First listen and then answer the following question. 听录音，然后回答以下问题。 How did William Hart's childhood prepare him for his acting

新概念英语第四册Lesson 23 Bird flight

Lesson 23 Bird flight 鸟的飞行方法 First listen and then answer the following question. 听录音，然后回答以下问题。 What are the two main types of bird flight described by the author? No two sorts of birds practise quite the same sor

新概念英语第四册Lesson 17 A man-made disease

Lesson 17 A man-made disease 人为的疾病 First listen and then answer the following question. 听录音，然后回答以下问题。 What factor helped to spread the disease of myxomatosis? In the early days of the settlement of Australia, enterp

新概念英语第四册Lesson 26 The past life of the earth

Lesson 26 The past life of the earth 地球上的昔日生命 First listen and then answer the following question. 听录音，然后回答以下问题。 What is the main condition for the preservation of the remains of any living creature? It is ani

新概念英语第四册Lesson 28 Patients and doctors

Lesson 28 Patients and doctors 病人与医生 First listen and then answer the following question. 听录音，然后回答以下问题。 What are patients looking for when they visit the doctor? This is a sceptical age, but although our faith in ma

新概念英语第四册Lesson 29 The hovercraft

Lesson 29 The hovercraft 气垫船 First listen and then answer the following question. 听录音，然后回答以下问题。 What is a hovercraft riding on when it is in motion? Many strange new means of transport have been developed in our century

新概念英语第四册Lesson 18 Porpoises

Lesson 18 Porpoises 海豚 First listen and then answer the following question. 听录音，然后回答以下问题。 What would you say is the main characteristic of porpoises? There has long been a superstition among mariners that porpoises will s

新概念英语第四册Lesson 22 Knowledge and progress

Lesson 22 Knowledge and progress 知识和进步 First listen and then answer the following question. 听录音，然后回答以下问题。 In what two areas have people made no 'progress' at all? Why does the idea of progress loom so large in the m

新概念英语第四册Lesson 25 Non-auditory effects of noi

Lesson 25 Non-auditory effects of noise 噪音的非听觉效应 First listen and then answer the following question. 听录音，然后回答以下问题。 What conclusion does the author draw about noise and health in this piece? May people in indu

新概念英语第四册Lesson 36 The cost of government

Lesson 36 The cost of government 政府的开支 First listen and then answer the following question. 听录音，然后回答以下问题。 What is the most important factor, both in government or business, for keeping running costs low? If a nation

新概念英语第四册Lesson 35 Space odyssey

Lesson 35 Space odyssey 太空探索 First listen and then answer the following question. 听录音，然后回答以下问题。 When will it be possible for us to think seriously about colonising Mars? The Moon is likely to become the industrial hub

新概念英语第四册Lesson 37 The process of ageing

Lesson 37 The process of ageing 衰老过程 First listen and then answer the following question. 听录音，然后回答以下问题。 What is one of the most unpleasant discoveries we make about ourselves as we get older? At the age of twelve year

新概念英语第四册Lesson 33 Education

Lesson 33 Education 教育 First listen and then answer the following question. 听录音，然后回答以下问题。 Why is education democratic in bookless, tribal societies? Education is one of the key words of our time. A man without an educatio

新概念英语第四册Lesson 31 The sculptor speaks

Lesson 31 The sculptor speaks 雕塑家的语言 First listen and then answer the following question. 听录音，然后回答以下问题。 What do you have to be able to do to appreciate sculpture? Appreciation of sculpture depends upon the ability

新概念英语第四册Lesson 32 Galileo reborn

Lesson 32 Galileo reborn 伽利略的复生 First listen and then answer the following question. 听录音，然后回答以下问题。 What has modified out traditional view of Galileo in recent times? In his own lifetime Galileo was the centre of v