填空题 Directions: In this section, you will hear a talk. Answer the questions below. You will hear the recording twice. At the end of the talk there will be a 3-minute pause, during which time you are asked to write down your answers briefly on the Answer Sheet.

填空题 A report by the United Nations Environment Program says Africa faces severe ______ unless urgent action is taken.

填空题 It says Africa faces increases in air and water pollution, ______, water shortages and wildlife losses.

填空题 Experts say there will be many new threats during the next thirty years. They include climate change, the spread of ______ and animals, uncontrolled expansion of cities and pollution from cars and industry.

填空题 Records show that has been ______ decreasing since 1968.

填空题 They say more could be done to reduce ______, increase aid and help give local communities more power.