高中英语牛津版高三上学期05

[-3:38.00]storing paints and pesticides in closed containers,
[-3:39.00]and using those pollutant sources in periods of low or no occupancy
[-3:40.00]are all easy and effective means to prevent the problems
[-3:41.00]Of course,of all the measures to take,education is on top of the list.
[-3:42.00]When everyone in the school fully understands the matter,
[-3:43.00]a safer and healthier learning environment with cleaner air can be created
[-3:44.00]B Listening
[-3:45.00]In 1950,30% of the world's population lived in urban areas
[-3:46.00]By 2000,the proportion of urban dwellers had risen to 47%
[-3:47.00]and it expected to reach 60% by 2030.
[-3:48.00]At the current rate of change,
[-3:49.00]the number of urban dwellers will equal the number of rural dwellers
[-3:50.00]in the world in 2007.
[-3:51.00]There are 2.9,000,000,000 inhabitants in urban areas today
[-3:52.00]and 4.9,000,000,000 are expected by 2030 ,
[-3:53.00]whereas the world has 6.1,000,000,000 inhabitants
[-3:54.00]and is expected to have 8.1,000,000,000 by 2030.
[-3:55.00]More than 150,000 people
[-3:56.00]are being added to the urban population in developing countries every day
[-3:57.00]Greater Tokyo,Japan,already has 26,000,000 people,
[-3:58.00]Sao Paulo,Brazil 18,000,000 and Bombay,India,18,000,000
[-3:59.00]It is predicted that by 2015,
[-4:00.00]the world  will have 23'megacities'with populations over 10,000,000
[-4:-1.00]and more than 500 cities with populations of 1,000,000 or more.
[-4:-2.00]The prediction is that by 2025,2/3 of the world's people will live in cities