【正确答案】As is depicted in the picture, we are facing serious shortage of fresh water. The land has become barren with the last tree struggling for survival in vain and there is no water coming from the tap. What impresses us most is that a drop of tear full of despair shedding from the eye. Definitely, the picture reminds us of the serious situation we are confronting that if we don't value this resource the last drop of water will be our own tears.
Short as it is, people still waste it. With the growth of population and industry, the amount of fresh water in use is also growing rapidly. It is estimated that if not properly controlled, fresh water will be used up by the next century. Another dangerous factor that contributes to this phenomenon is the water pollution, which aggravates the seriousness of fresh water shortage. Freshwater is a vital resource for agriculture, industry, and daily necessities, without which life couldn't exist. So it would be no exaggeration to say that lack of freshwater has become a threat to the survival of human beings, even the entire ecology.
It is no use only being aware of the shortage of fresh water. It is never too late if we act right now. The first important measure is to protect our water resources form being polluted. Educating people to save water in daily life is of similar significance. Techniques such as recycling waste water and converting sea water into drinkable water are especially needed in dry areas. Only when these measures are put into practice can the shortage of fresh water be solved.