(11)It’s estimated that one-third of the countries of the world are very rich, and （）are very poor. People in the richer countries don’t understand the great differences between them and those in the poorer countries. A very simple example is that a dog or a cat in North America is better than a child in the poorer countries. (12)A fisherman in South America may catch the fish which is made into （）while the children in poor countries are not getting enough to eat for their bodies to grow properly. (13)Although a lot of the world’s natural resources come from these （） countries, (14)it’s the （） countries that decide what kind of price they are ready to pay for these resources. And (15)the prices the richer countries get from （）, however, are always rising. So they are getting richer and richer, and the poorer countries are getting poorer.
What percentage do the poor countries account for in the world(11)It’s estimated that one-third of the countries of the world are very rich, and （）are very poor. People in the richer countries don’t understand the great differences between them and those in the poorer countries. A very simple example is that a dog or a cat in North America is better than a child in the poorer countries. (12)A fisherman in South America may catch the fish which is made into （）while the children in poor countries are not getting enough to eat for their bodies to grow properly. (13)Although a lot of the world’s natural resources come from these （） countries, (14)it’s the （） countries that decide what kind of price they are ready to pay for these resources. And (15)the prices the richer countries get from （）, however, are always rising. So they are getting richer and richer, and the poorer countries are getting poorer.
What may the fish the fisherman catches be made into
With the world’s population estimated to grow from six to nine billion by 2050, researchers, businesses and governments are already dealing with the impact this increase will have on everything from food and water to infrastructure (基础设施) and jobs. Underlying all this (1) will be the demand for energy, which is expected to double over the next 40 years. Finding the resources to meet this demand in a (2) , sustainable way is the cornerstone (基石) of our nation’s energy security, and will be one of the major (3) of the 21st century. Alternative forms of energy—bio-fuels, wind and solar, to name a few—are (4) being funded and developed, and will play a growing (5) in the world’s energy supply. But experts say that even when (6) , alternative energy sources will likely meet only about 30% of the world’s energy needs by 2050. For example, even with (7) investments, such as the $93 million for wind energy. development (8) in the American Recovery and
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