听力原文： The majority of Australia state and central governments have signed a deal to safeguard the country's water resources. A multi-million dollar scheme to revive one of its most important river basins has also been approved, Australia is the world's driest continent. There's general agreement that the country has to use water more efficiently. In many parts supplies are in crisis. At a meeting in Canberra, the Council of Australian Governments has approved a national water plan. It attempts to balance environmental concerns and the needs of the community. The amount of water taken from rivers for commercial use is to be cut and farmers will be compensated. At the heart of the initiative is a 350 million dollar scheme to revitalize the Murray Darling river basin. It's one of-the most important water courses in the country and stretches across four states in south-eastern Australian. In recent times, it's been badly affected by excessive irrigation and a lack of rain. However, there was a concern that projects to help revive other struggling rivers will not be funded. A special commission is to be set up and will help develop the trade in water between the states and territories. Domestic consumers could soon face permanent restrictions, such is the perilous state of supplies in many parts of the country. What is the passage mainly about?