《高等教育“十一五”规划教材:通用型大学英语听说教程(第4册)》是以中华人民共和国教育部发布的《大学英语课程教学要求》为指导,以“实用为主,够用为度”的原则编写的教材,重在培养学生的语言运用能力和交际能力,实用性强。
《高等教育“十一五”规划教材:通用型大学英语听说教程(第4册)》共分十个单元和两套模拟测试题,与读写教程各单元主题开放式关联。每个单元分为Warming-up、Listening Activities、Speaking Activities和Fun Listening四部分内容。
《高等教育“十一五”规划教材:通用型大学英语听说教程(第4册)》内容适应21世纪高等院校英语教学趋势,注重对学生英语综合应用能力,特别是听说能力的培养,体现了提高学生英语自主学习能力、综合文化素养,以及适应我国社会发展和国际交流需要的目���和要求,适合高等院校学生及各类中**英语学习者使用,也可作为其他同等学力培训教材。 通用型大学英语听说教程:第四册_张华志_科学出版社_

How long can you expect to live? That is to say, what is the average life expectancy for us?
The average life expectancy varies from country to country, but for many countries nowadays, the average life expectancy is over 70 years. That means that the average person will live to be at least 70 years old.
Actually, in the United States in 1980, the average life expectancy was 73.8 years. This age, 73.8 years, is a little higher than the average life expectancy in 1970. In 1970, the average was 70.8 years.
In fact, if you look at the average life expectancy information for this century, you'll see that the average gets higher every year. For instance, in 1900 it was 47.3, and in 1960 the average lifetime was 69.7 years. So, you can see that in 80 years the life expectancy has risen from 47.3 years to 73.8 years.
Why does the average life expectancy keep getting higher and higher? The main reasons are related to health care. First, health care, especially general health care for young children has improved steadily. Second, a large number of drugs have been developed in the past 40 to 50 years. These powerful drugs can prevent and cure many diseases that used to be fatal in the past.
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Unit 1 Friends Are Your Shadows
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 2 Love and Pain
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 3 How to Be Healthy
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 4 Jobs Are Nowhere
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 5 Digital Life
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 6 Success Needs Many Factors
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 7 Everyone Can Be Happy
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 8 Money Says
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 9 Environment Is Sniffling
Warming-up
Listening Activities
Speaking Activities
Fun Listening

Unit 10 Calamities for No Reason
Warming-up
Listening Activities
Speaking Activities
Fun Listening
Appendix I
Appendix II
References