have breakfast with the family.They can also get a bed-sitting room,that is to say one self-contained room in which they can cook,live and sleep Altematively,they can share a rented flat or house with a group of young people,perhaps the most popular option ofall. Passage2“How to'”Books 25min Books which give instructions on how to do things are popular in the United States today.Thousands of these "how to"books are available.In fact,there are about four thousand books with titles that begin with the words"how to” Many "how to"books give advice on careers.They tell you how to choose a career and how to succeed in it.Many of these books help people to use their free time better.Some people want books which will give them useful information about sports,hobbies,and travel.Other people use their free time to make repairs and improvements on their homes.They prefer books which give step-by-step instructions on how to repair things like plumbing and electrical wiring or on how to redecorate or enlarge a house. Why have"how to"books become so popular?Probably because life has become more complex.Today people have far more free time to use more choices to make,and more problems to solve,"how to"books help people to deal with modern life. Passage 3 Our Concern 25 min The history of life on earth has been a history of interaction between living things and their surroundings.To a large extent,the physical form and the habits of the earth's vegetation and its animal life have beer molded by the environment.Only in the present century has one species of man acquired significant power to alter the nature of his world. The rapidity of change follows the pace of man rather than the pace of nature.Radiation is now the unnatural creation of man's tamperinghave breakfast with the family. They can also get a bed-sitting room, that is to say one self-contained room in which they can cook, live and sleep. Alternatively, they can share a rented flat or house with a group of young people, perhaps the most popular option of all. Passage 2 “How to” Books Books which give instructions on how to do things are popular in the United States today. Thousands of these “how to” books are available. In fact, there are about four thousand books with titles that begin with the words “how to”. Many “how to” books give advice on careers. They tell you how to choose a career and how to succeed in it. Many of these books help people to use their free time better. Some people want books which will give them useful information about sports, hobbies, and travel. Other people use their free time to make repairs and improvements on their homes. They prefer books which give step-by-step instructions on how to repair things like plumbing and electrical wiring or on how to redecorate or enlarge a house. Why have “how to” books become so popular? Probably because life has become more complex. Today people have far more free time to use, more choices to make, and more problems to solve, “how to” books help people to deal with modern life. Passage 3 Our Concern The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and the habits of the earth’s vegetation and its animal life have been molded by the environment. Only in the present century has one species of man acquired significant power to alter the nature of his world. The rapidity of change follows the pace of man rather than the pace of nature. Radiation is now the unnatural creation of man’s tampering 25 min 25 min