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Many plant foods provide both many vitamins and minerals of very few calories.
A．Y
B．N
C．NG
答案
更多“Many plant foods provide both many vitamins and minerals of very few calories.A．YB．NC．NG”相关的问题
第1题
1.In prehistoric times people（）.
A、ate much more than we do today
B、lived mainly on plant food
C、had a wide-ranging diet
D、were more fussy about what they ate
2.The specialization of food was started by（）.
A、the emergence of supermarkets
B、the rise of agriculture
C、the rich countries
D、the modern shops
3.According to the passage, people in the West today survive on（）.
A、carrots and tomatoes
B、several thousand types of plants and cereals
C、a very small number of cultivated foods
D、special species planted one thousand years ago
4.The conclusion seems to be that we（）.
A、could make use of more natural species
B、don't cultivate the right kind of food
C、produce more food than we need
D、cultivate too many different species
5.Most of us have come to expect（）.
A、no variation in our diet
B、a reduction in food supplies
C、a specialist diet
D、food conforming to a set standard
第2题
第3题
听力原文： One of the reasons for our success as a species is our ability to eat and thrive on a large variety of foods. Many animal species have become extinct or are on the edge of extinction partly because they lack this adaptability. They need to feed on a particular kind of plant or a particular kind of animal or insect. If this source of food is for any reason re- moved, then the animal concerned is unable to change to a different diet. Gradually it becomes extinct. We know that many animal species have died out, but so have some human species such as the early form. of mall that is called Neanderthal man. Perhaps part of the reason for his failure to survive was his lack of adaptability in diet. But modern man is almost entirely free from the limitation of any particular food requirements. We are able to survive on a wide variety of foods both animal and vegetable. For example, the Eskimos are almost totally meat eaters: seal, bear, whale meat and fish form. their whole diet; the Aborigines of Australia, living in dry desert regions, have learnt to survive by making use of forms of insect life as food to supplement their diet of fruits and roots. Men have learnt to survive in the deserts and in dense rain forests; they have learnt to raise domestic animals, which live at high altitudes so that they can inhabit the mountainous regions of the world like Tibet; and they have made the coconut their chief food on the Pacific islands.
(30)
A．It is all ability both man and animals possess.
B．It is the reason for man's superiority over animals.
C．It is one of the reasons for man's success as a species.
D．It is a proof of our superior intelligence.
第5题
Part B
Directions: In the following article some paragraphs have been removed. For Questions 66-70, choose the most suitable paragraph from the list A-F to fit into each of the numbered gaps. There is one paragraph which does not fit in any of the gaps. Mark your answers on ANSWER SHEET 1.
Supermarket shoppers have never been more spoilt for choice. But just when we thought traditional systems of selective farming had created the most tempting array of foods money can buy, we are now being presented with the prospect of genetically created strains of cabbages, onion, tomato, potato and apple.
It may not tickle the fancy of food purists but it fires the imagination of scientists. Last week they discovered that the classic Parisian mushroom contains just the properties that, when genetically mixed with a wild strain of mushroom from the Sonora desert in California, could help it grow en masse while at the same time providing it with the resilience of the wild strain.
66.______
" We have found a way of increasing the success rate from one to 90 per cent. "
This is just one of the many products that, according to skeptics, are creating a generation of "Frankenfoods". The first such food that may be consumed on a wide scale is a tomato which has been genetically manipulated so that it does not soften as it ripens.
67.______
Critics say that the new tomato—which cost $25 million to research—is designed to stay on supermarket shelves for longer. It has a ten-day life span.
Not surprisingly, every-hungry US is leading the search for these forbidden fruit. By changing the genes of a grapefruit, a grower from Texas has created a sweet, red, thin-skinned grapefruit expected to sell at a premium over its California and Florida competitors.
For chip fanatics who want to watch their waist-lines, new high-starch, low-moisture potatoes that absorb less fat when fried have been created, thanks to a gene from intestinal bacteria.
The scientists behind such new food argue that genetic engineering is simply an extension of animal and plant breeding methods and that by broadening the scope of the genetic changes that can be made, sources of food are increased. Accordingly, they argue, this does not inherently lead to foods that are less safe than those developed by conventional techniques. But if desirable genes are swapped irrespective of species barriers, could things spiral out of control？ "Knowledge is not toxic, "said Mark Cantley , head of the biotechnology unit at the Organisation for Economic Cooperation and Development, "It has given us a far greater understanding of how living systems work at a molecular level and there is no reason for people to think that scientists and farmers should use that knowledge to do risky things. "
Clearly, financial incentive lies behind the development of these bigger, more productive foods. But we may have only ourselves to blame. In the early period of mass food commerce, food varieties were developed by traditional methods of selective breeding to suit the local palate. But as suppliers started to select and preserve plant variants that had larger fruit, consumer expectations rose, leading to the development of the desirable clones. Still, traditionalists and gourmets in Europe are fighting their development.
68.______
Even in the pre-packaged US, where the slow-softening tomato will soon be reaching supermarkets, 1, 500 American chefs have lent their support to the Pure Food Campaign which calls for the international boycott of genetically engineered foods until more is known about the consequences of the technology and reliable controls have been introduced.
In the short term, much of the technology remains untested and in the long term the consequences for human biology are unknown. Questions have arisen over whether new proteins in gen
第7题
A.for
B.against
C.through
D.to
第8题
A．organic foods can he more expensive but are often no better than conventionally grown foods
B．many organic foods are actually less nutritious than similar conventionally grown foods
C．conventionally grown foods are more readily available than organic foods
D．too many farmers will stop using conventional methods to grow food crops
第9题
A．It has many joints.
B．It can be easily planted.
C．It has a delicate fragrance.
D．It is a strong plant but can be easily bent.
第10题
The author cites the only Chinese word "for rice to show that ______.
A．the Chinese people especially enjoy rice
B．the Chinese people have a different viewpoint
C．important foods are not always named by many words
D．something culturally important may not be important in language
