新视野大学英语读写教程听力 第一册 unit09b_new

[-1:-7.00]HIV/AIDS,however,is spreading quickly all over the world.
[-1:-8.00]The third major trend is toward an attitude of indifference.
[-1:-9.00]People seem to have forgotten ways to keep diseases under control.
[-1:10.00]Although medical science had achieved control
[-1:11.00]over several dangerous diseases,some are returning.
[-1:12.00]For instance,tuberculosis,once a dangerous killer,was cured.
[-1:13.00]Now the disease is appearing again.
[-1:14.00]Nature
[-1:15.00]Pollution continues to affect our forests and water.
[-1:16.00]The bird population is decreasing because of oil spills and spreading cities.
[-1:17.00]Seas and oceans are changing.
[-1:18.00]Trees are cut down,more soil washes away,and water quality is affected.
[-1:19.00]Many of these trees are in our rain forests
[-1:20.00]where thick areas of plants and trees,
[-1:21.00]home for many birds and animals,are disappearing.
[-1:22.00]Conclusion
[-1:23.00]Our challenges for this new century are clear.
[-1:24.00]The problems of numerous inhabitants on this small planet
[-1:25.00]will continue to be important to each of us.
[-1:26.00]These challenges show that all of us need to be involved in solving the problems.
[-1:27.00]May we find new ways to accomplish the task.