题目内容
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The way red meat is prepared has much to do with the probability of breast cancer.
A．Right
B．Wrong
C．Not mentioned
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更多“The way red meat is prepared has much to do with the probability of breast cancer.A．RightB”相关的问题
Different events can change the balance of sea life./Red fides are an example./These can happen in oceans, rivers or lakes, anywhere in the world./What happens is that algae suddenly increase in numbers./ Algae are sit. e-celled organisms./They are a normal part of sea life./
As they spread, or bloom, the water may turn red or brown./Sometimes the water does not change color at all./But deadly algae could still be present./
Some kinds of algae produce a strong poison./This can build up in shellfish that eat the algae/and make them poisonous, but not kill them./Other kinds of algae may kill sea life by reducing oxygen levels in the water./ In some red fides, thonsands of dead fish appear on beaches./
Scientists do not know exactly why red tides happen./But they say a combination of conditions all play apart./These include water temperature, nutrients in the water and water flow./Pollution could also play a part/
(1)
A、Yes
B、No
C、Not given
D、/
One characteristic common to unsuccessful food innovations has been that, even with extensive government support, they often have not been technologically adapted or culturally acceptable to the people for whom they had been developed. A successful new technology, therefore, must fit the entire sociocultural system in which it is to find a place security of crop yield, practicality of storage, and costs are more significant than had previously been realized by the advocates of new technologies.
The adoption of new food technologies depends on more than these technical and cultural considerations; economic factors and governmental policies also strongly influence the ultimate success of any innovation. Economists in the Anglo-American tradition have taken the lead in investigating the economics of technological innovation. Although they exaggerate in claiming that profitability is the key factor guiding technical change—they completely disregard the substantial effects of culture—they are correct in stressing the importance of profits. Most technological innovations in agriculture can be fully used only by large landowners and are only adopted if these profit-oriented business believe that the innovation will increase their incomes. Thus, innovations that carry high rewards for big agribusiness groups will be adopted even if they harm segments of the population and reduce the availability of food in a country. Further, should a new technology promise to alter substantially the profits and losses associated with any production system, those with economic power will strive to maintain and improve their own position. Since large segments of the populations of many developing countries are close to the subsistence(ability to live)margin and essentially powerless, they tend to be the losers in this system unless they are aided by a government policy that takes into account the needs of all sectors (branches) of the economy. Therefore, although technical advances in food production and processing will perhaps be needed to ensure food availability, meeting food needs will depend much more on equalizing economic powers among the various segments of the populations within the developing countries themselves.
Which of the following best describes the organization of the first paragraph?
A．A suggestion is made and arguments in its favor are provided.
B．A criticism is imposed and an alternative proposal is suggested.
C．An example is analyzed and general conclusions are derived from it.
D．A generalization is advanced and supporting evidence is provided.
A、Low pH
B、High Temprature
C、Eutrophication
D、zooxanthellae
A、Population.
B、Community.
C、Individual
D、Ecosystem
A、Where coral reefs are common
B、Where equatorial upwelling takes place.
C、Where coastal upwelling takes place.
D、Around Antarctica and in the Arctic.
A、Oil pollution from tanker discharge.
B、Eutrophication due to algae blooms.
C、Thermal pollution from power plants
D、Pesticides from agriculture
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