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Within 80 years, some scientists estimate, the world must produce more than eight times the present world food supply. The productiveness of the sea raises our hopes for an adequate food supply in the future. Aided by men of science, we have set forth to find out
that 70 percent of the earth remains unexplored--the ocean depths. Thus, we may better discover and utilize the sea’s natural products for the world’s hungry.
It is fish protein concentrate that is sought .from the seas. By utilizing the unharvested fish in United States waters alone, enough fish protein concentrate can be obtained to provide supplemental animal protein for more than one billion people for one year at the cost of less than half a cent per day per person. The malnutrition of children is terribly tragic, But the crime lies in society’s unrestrained breeding, not in its negligence in producing fish powder. But wherever the population projects are caref
A. the seas we will depend on for future food have been more or less contaminated.
B. the marine resources are directly bound up with our future life.
C. the exploitation drives are essential for us to improve the quality of llfe on the earth.
D. the ecological balance in the seas has nothing to do with that on the land.
Text 3
Within 80 years, some scientists estimate, the world must produce more than eight times the present world food supply. The productiveness of the sea raises our hopes for an adequate food supply in the future. Aided by men of science, we have set forth to find out
that 70 percent of the earth remains unexplored--the ocean depths. Thus, we may better discover and utilize the sea’s natural products for the world’s hungry.
It is fish protein concentrate that is sought .from the seas. By utilizing the unharvested fish in United States waters alone, enough fish protein concentrate can be obtained to provide supplemental animal protein for more than one billion people for one year at the cost of less than half a cent per day per person. The malnutrition of children is terribly tragic, But the crime lies in society’s unrestrained breeding, not in its negligence in producing fish powder. But wherever the population projects are caref
A. the seas we will depend on for future food have been more or less contaminated.
B. the marine resources are directly bound up with our future life.
C. the exploitation drives are essential for us to improve the quality of llfe on the earth.
D. the ecological balance in the seas has nothing to do with that on the land.
Within fifteen years Britain and other nations should be well on their way to operating huge industrial complexes for the recycling of waste. The word "rubbish" could lose its meaning because everything which goes into the dumps would be made into something useful.
The latest project is to take a city around half a million inhabitants and discover exactly what raw materials go into it and what go out. The aim is to find out how much of these raw materials could be provided if a plant for recycling waste were built just outside the city. This plant would recycle not only metal such as steel, lead and copper, but also paper and rubber as well.
Another new project is being set up to discover the best ways of sorting and separating the rubbish. When this project is complete, the rubbish will be processed like this: first, it will pass through sharp metal bars which will tear open the plastic bags in which rubbish is usually packed; then it will pass
A. a cheap way to get energy
B. the location of recycling plants
C. new ways of recycling waste
D. the word rubbish could lose its meaning
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