更多"It is important that the problems o"的相关试题:
[多项选择]Water Problems
Where’’s the water
Water. If you’’ve got it, you probably take it for granted. But a quick look at the globe — and a chat with the tiny group of researchers who are worrying about fresh water — both indicate that water shortages are very serious.
And they aren’’t necessarily in the future, either. Here’’s what we’’ve read in the past week or so.
... Mexico City (home to 20 million people) is sinking because the city sucks out underground water faster than the aquifer can be refilled.
... Florida wants to refill its overpumped aquifer (蓄水层) with untreated surface water, despite federal regulations to the contrary.
... Texas is moving toward private, for-profit water sales. The water will be "mined" from aquifers that are disappearing fast. No word on what the private suppliers, including corporate raider T. Boone Pickens, will do once the aquifers run dry.
... Aquifers around the world are being overtapped for irrigated agriculture, which f
[单项选择] Water Problems
Where’’s the water
Water. If you’’ve got it, you probably take it for granted. But a quick look at the globe — and a chat with the tiny group of researchers who are worrying about fresh water — both indicate that water shortages are very serious.
And they aren’’t necessarily in the future, either. Here’’s what we’’ve read in the past week or so.
... Mexico City (home to 20 million people) is sinking because the city sucks out underground water faster than the aquifer can be refilled.
... Florida wants to refill its overpumped aquifer (蓄水层) with untreated surface water, despite federal regulations to the contrary.
... Texas is moving toward private, for-profit water sales. The water will be "mined" from aquifers that are disappearing fast. No word on what the private suppliers, including corporate raider T. Boone Pickens, will do once the aquifers run dry.
... Aquifers around the world are being overtapped for i
A. Y
B. N
C. NG
[填空题]In my opinion, it is important that the water (clean) __________ before we use it.
[填空题]The problems Americans face concerning water are ground water shrinkage and tap water pollution.
[单项选择]to prevent problems it is important to
A. define roles clearly.
B. work as efficiently as possible.
C. treat each other with extra care.
[单项选择]Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage (污物). On tile other hand, increasing demands for water will decrease substantially the amount of water available for diluting (稀释) wastes. Rapidly expanding industries which involve more and mine complex chemical processes will produce large volumes of liquid wastes, and many of these will contain chemicals which are noxious. To feed our rapidly expanding population, agriculture will have to be intensified. This will involve ever-increasing quantities of agricultural chemicals. From this, it is apparent that drastic steps must be taken immediately to develop correct measures for the pollution problem.
There are two ways by which this pollution problem can be solved. The first way is to de- crease their pollution hazard. This involves the processing of solid wastes "prior to" disposal and the treatment of liquid wastes.
A s