Tham khảo tài liệu 'anh ngữ sơ cấp - học tiếng anh bằng hình ành (phần 2) part 10', tài liệu phổ thông, tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | There were more than twice as many people in the world in the year 1850 as in 1650. There were more than twice as many in 1950 as in 1850. L L I o N 1450 1750 1050 1950 Will the population of the world go on increasing Look at the curve in this picture. twice twice o thing Is two times It. world the earth and all that which is on It people other living things and the things that mon has made. curve line that goes on changing Its direction. 298 There were over two billion six hundred million 2 600 000 000 people in the world in 1954. Less than hatf of them could get as much food as they needed. Many of them because of this are not healthy. There are some people everywhere who take more food than is good for them but many more get less than they need. People are asking one another what the world population will be in 2050 if it goes on increasing like this. It will be very great. It will be much greater in some parts of the world than in others. Some people say it will be between five and ten billion and some that it may be as much as thirty billion. healthy well right in body and mind everywhere in every place. 299 More than a hundred million people on earth today live in cities. Some cities have more people in them than some countries have. There are nineteen or more cities in the world which have over two million people in them. Cities have been increasing in size in our time. Before the twentieth century it was hard for the people in a great city to get enough food. On the next page you will see a map of the world on which are marked ten cities with more than three million people in each. Hyt town of groat size. twontlottl conlwyl the hundred yean numbered from 1900 through 1999. .
