Water is the most precious resource on our planet. It covers about 71% of the Earth'ssurface,with approximately 97% being salt water in oceans and only 3% being freshwater. This fresh water exists in different forms: about 68% is trapped in glaciers,30%

is underground, and just 2% is found in rivers, lakes, and the atmosphere.

The continuous movement of water on Earth is called the_______1___This naturalprocess begins when the sun's heat causes water to _______2_____from oceans,lakes,andrivers. The water vapor rises into the atmosphere where it cools and _____3____into tinydroplets,forming clouds. When these droplets become too heavy, they fall back to Earthas precipitation(降水)，which could be rain, snow, or hail depending on the temperature.

Water is essential for all_____4_____ processes in living organisms.Humans can survivewithout food for weeks, but can only live 3-5 days without water.Besides drinking, weuse water for agriculture, which consumes about 70% of global fresh water.Industries also require large quantities of water for______5_____ and cooling purposes.

However, water resources are under threat. Many areas face_____6____due to climate change and overuse. Pollution from factories and farms has made many water sources_____7_____ . In some developing countries, millions of people lack access to_____8____ drinking water, leading to waterborne diseases. To address these challenges, we must take action. Simple measures like fixing ______9_____ pipes can save thousands of liters annually. Using ____10_____appliances and practicing rainwater harvesting are other effective solutions. Governments should also

invest in water treatment plants to ensure clean water for all.

 ( ) 1.A. water cycle B.rain circle C. ocean flow

( )2.A.freeze B. evaporate C.disappear

( )3.A. condenses B.expands C. disappears

( )4.A. chemical B.biological C. environmental

( )5.A. cleaning B. manufacturing C.transporting

( )6.A.water shortages B. heavy rains C.floods

( )7.A. cleaner B.polluted C. deeper ( )8.A.warm B. safe C. expensive

( )9.A.new B. leaking C.metal

( )10.A. water-saving B. electric C.smart