3、应采取措施，解决缺水问题：充分利用，避免污染，净化雨水或海水。
2、缺水问题越来越严重。原因是人口增长；工、农业生产发展；环境污染。
1、水是生命的源泉，农业的命脉、工业的血液！
34、Nowadays the _______between financial markets both at home and abroad is becoming closer and closer．
A．account B．situation C．connection D．condition
33、Students are asked to ________themselves in this boarding school and they are only allowed to go back home once a week．
A．behave B．act C．perform D．observe
32、Liz and Brian spent a long time______about which film to go and see．
A．discussing B．quarrelling C．complaining D．arguing
31、_____by keeping down costs will Power Data hold its advantage over other companies．
A．Even B．Only C．Still D．Despite
30、Captain Scott’s example_______them with the determination to reach the South Pole on foot ．
A．respected B．inspired C．admired D．prepared
29、It_____John and Mike that I met in the library yesterday afternoon．
A．was B．were C．had been D．would be