A.Profitability is neither necessary nor sufficient for a new technology to be adopted.
B.Profitability is the key factor guiding technological change.
C.Economic factors and governmental policies strongly influence the ultimate success of any innovation.
D.Innovations carrying high rewards for big agribusiness groups harm the poor.
5.The primary purpose of the passage is to discuss the ___.
A.means of assessing the extent of the world food shortage.
B.difficulties of applying technological solutions to the problem of food shortages.
C.costs of introducing a new food technology into a developing country.
D.nature of the new technological innovations in the area of food production.
答案:CBCCB
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第42篇
What most people dont realize is that wealth isnt the same as income. If you make $ 1 million a year and spend $ 1 million, youre not getting wealthier, youre just living high. Wealth is what you accumulate, not what you spend.
The most successful accumulators of wealth spend far less than they can afford on houses, cars, vacations and entertainment. Why? Because these things offer little or no return. The wealthy would rather put their money into investments or their businesses. Its an attitude.
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