[填空题]The author uses the metaphor "a fish out of water" to mean______.

[填空题]If there isn’t any water, fish can’ t live.
Fish can’t live ______ water.

[填空题]Nearly all natural water bodies bear fish life excepting ______.

[填空题]Water filtered out of Ceramic Water Purifier is completely safe for drink.

[单项选择]Water is to fish （）air is to men.
A. that
B. so
C. what
D. so does

[单项选择]

Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts (干旱)are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the worlds population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis.
But that doesn’t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want.
Instead, for all uses except the domestic demand of the poor, governments should price water to refl
A. Only half of the worlds water can be used.
B. The world population is increasing faster and faster.
C. Half of the worlds water resources have been seriously polluted.
D. Humanity has not placed sufficient value on water resources.

[填空题]Why can water put out a fire

[单项选择]Air is to humans ______ water is to fish,
A. that
B. as
C. what
D. which

[单项选择]Water is to fish ______ air is to man.
A. that
B. which
C. what
D. how

[单项选择]A large fish was slowly swimming through the water, its tail （　） back and forth like the pendulum of a clock.
A. swung
B. was swinging
C. was swung
D. swinging

[单项选择]Humanity uses a little less than half the water available worldwide. Yet occurrences of shortages and droughts are causing famine and distress in some areas, and industrial and agricultural by-products are polluting water supplies. Since the world"s population is expected to double in the next 50 years, many experts think we are on the edge of a widespread water crisis. But that doesn"t have to be the outcome. Water shortages do not have to trouble the world—if we start valuing water more than we have in the past. Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective. We can no longer afford to consider water a virtually free resource of which we can use as much as we like in any way we want. Instead, for all uses except the domestic demand of the poor, governments should price water to reflect its actual value. This means charging a fee for the water itself as well as for the supply costs. Governments should also protect this resource by providing water in more economically and environmentally sound ways. For example, often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland. No matter what steps governments take to provide water more efficiently, they must change their institutional and legal approaches to water use. Rather than spread control among hundreds or even thousands of local, regional, and national agencies that watch various aspects of water use, countries should set up central authorities to coordinate water policy.According to the author, the water price should ______.
A. be reduced to the minimum
B. stimulate domestic demand
C. correspond to its real value
D. take into account the occurrences of droughts