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When foods from different plant sources are eaten together,deficiency in one is compen
sated for by_____in another.(sufficient)
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更多“When foods from different plant sources are eaten together,deficiency in one is compen”相关的问题
第1题
回答题：
New Foods and the New World
In the last 500 years, nothing about people--not their clothes, ideas, or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree by South American Indians. The Spanish introduced it to the rest of the world during the 1500&39;s. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today.
The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Europe, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the "Potato Famine" of 1845--1846, and thou-sands more Were forced to emigrate to America.
There are many other that that have traveled from South America to the Old World.. But some others went in the opposite direction. Brazil is now the world&39;s largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia. It was first made into a drink by Arabs during the 1400&39;s.
According to an Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush. He tried one and experienced the "wide-awake" feeling that one-third of the world&39;s population now starts the day with.
According to the passage， which of the following has changed the most in the last 500 years？ 查看材料
A.Food
B.Chocolate
C.Potato
D.Coffee
第2题
When we speak of a human need, we mean something
which is unnecessary to life, something we can live with. 【M1】______
Food is a human need. We will starve to death if there 【M2】______
were no food on earth; but even if we have plenty of food,
but of the wrong kind, our bodies will have problem from
lack of the right food. This is known for malnutrition (营 【M3】______
养不良).
In countries where are not developed, man's food 【M4】______
needs are the same like in the most advanced societies. We 【M5】______
all need food and could live a good life on very few types of
food. People in very developed countries eat only the kinds 【M6】______
of food which can be grown near their homes, whereas
people in developed countries eat foods which are often
grown many thousands of miles away form. their homes.
People in undeveloped countries are happy with less
different kinds of foods than people in very developed ones
are, so we can say that despite the needs of the two kinds 【M7】______
of people are the same, their wants are different. People in
very developed countries eat many different types of
meat--they could live by only one, but they would be very 【M8】______
unhappy because every time what they ate was the same.
Even such special foods like chicken would be less fun to 【M9】______
eat if you had them every day. But we can't just live on
meat--we need other kinds of food like bread, rice, and
vegetables which are no more necessary to our bodies. 【M10】______
【M1】
第3题
The body can choose what it needs from the nutrients in the【B6】. Your body sees to it【B7】each organ gets the right amount of nutrients it needs. However, if the diet lacks some nutrients, the body has no【B8】of getting them.
Your body works twenty four hours a day. It is always building itself【B9】, and getting rid of waste products. It needs a constant【B10】of nutrients to do its job. When it receives the nutrients, it sends them【B11】they are needed.
Nutrients working with other nutrients【B12】the difference in our health and well-being. No single nutrient can work properly【B13】. For example, it takes calcium to build strong bones, but that is only the【B14】. Without vitamin D, the calcium can not be taken【B15】the body. The use of protein is another【B16】. Protein forms part of every cell and all the fluids that【B17】in and around the cells. However, it takes vitamin C to help make the fluids between the cells.【B18】vitamin C, the protein could not do its job.
The foods you eat keep you.【B19】for today, but they also build your body for a lifetime. They keep you well today, tomorrow, and【B20】.
【B1】
A．counted
B．accounted
C．numbered
D．measured
第4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5题
However, many of these fast foods have been attacked by scientists. The main problem with most fast food meals is that they're not nutritionally balanced. Those of chicken or beef usually contain more than enough protein for a person in one meal. They tend to supply you with too much fat and sugar but too little vitamins and iron. Pizza, a well-balanced fast food, however, is especially high in salt content, a factor for developing high blood pressure. And potatoes are a nutritious food, but when fried in fat they also become a high-fat food. Fast food meals also sadly lack of vegetables and fruit. Thus it is good to eat vegetables and fruit at your other meals on the days when you eat fast food.
There are many reasons why Americans like fast food EXCEPT that ______.
A．fast food is very cheap
B．fast food is very delicious
C．only a little of fast food makes you feel full
D．fast food is nutritionally balanced
第6题
It ____________(他万万没有想到)that Tom, his best friend, betrayed him when he was in difficulty.
第7题
阅读材料，回答题：
Transport and Trade
1Transport is one of the aids to trade.by moving goods from places where they are plentiful toplaces where they are scarce, transport adds to their value. The more easily goods can be broughtover the distance that separates producer and consumer, the better for trade. When there were norailways, no good roads, no canals, and only small sailing ships, trade was on asmall scale.
2The great advances made in transport during the last two hundred years were accompanied byabig increase in trade. bigger and faster ships enabled atrade in meat to develop between britainand New Zealand, for instance. Quicker transport makes possible mass-production and big busi-ness, drawing supplies from, and selling goods to, all parts of the globe. big factories could not ex-ist without transport to carry the large number of workers they need to and from their homes. bigcity stores could not have developed unless customers could travel easily from the suburbs andgoods were delivered to their homes. big cities could not survive unless food could be brought fromadistance.
3Transport also prevents waste. Much of the fish landed at the ports would be wasted if it couldnot B．e taken quickly to inland towns. Transport has given us amuch greater variety of foods and goods since we no longer have to live on what is produced locally. Foods which at one time could be obtained only during apart of the year can now be obtained all through the year. Transport hasraised the standard of living.
4by moving fuel, raw materials, and even power, for example, through electriccables, transporthas led to the estaB．lishment of industries and trade in areas where they would have been impossi-ble before. Districts and countries can concentrate on making things which they can do better andmore cheaply than others and can then exchange them with one another. The cheaper and quickertransport becomes,the longer the distance over which goods can profitably be carried． Countrieswith poor transport have alower standard of living.
5Commerce requires not only the moving of goods and people but also the carrying of messagesand information. Means of communication, like telephones, cables and radio, send informationabout prices, supplies, and changing conditions in different parts of the worlD． In this way, ad-vanced communication systems also help to develop trade.
Paragraph 2__________ 查看材料
A.Higher Living Standard
B.Importance of Transport in Trade
C.Various Means of Transport
D.birth of Transport-related Industries and Trade
E.Role of Information in Trade
F.PublicTransportation
第8题
根据下列材料，请回答题
Food Fright
Experiments under way in several labs aim to create beneficial types of genetically modified （GM） foods， including starchier potatoes and caffeine-free coffee beans. Genetic engineers are e-yen trying to transfer genes from a cold-water fish to make a frost-resistant tomato. A low-sugar GM strawberry now in the works might one day allow people with health problems such as diabetes to enjoy the little delicious red fruits again. GM beans and grains supercharged with protein might help people at risk of developing kwashiorkor. Kwashiorkor， a disease caused by severe lack of protein， is common in parts of the world where there are severe food shortages.
Commenting on GM foods， Jonathon Jones， a British researcher， said， "The future benefits will be enormous， and the best is yet to come. "
To some people， GM foods are no different from unmodified foods. "A tomato is a tomato，" said Brian Sansoni， an American food manufacturer.
Critics of GM foods challenge Sansoni"s opinion. They worry about the harm that GM crops might do to people， other animals， and plants.
In a recent lab study conducted at Cornell University， scientists tested pollen made by Btcorn， which makes up one-fourth of the U. S. corn crop. The scientist sprinkled the pollen on to milkweed， a plant that makes a milky juice and is the only known food source of the monarch butterfly caterpillar. Within four days of munching on the milkweed leaves ~ almost half of a test group of caterpillars had died. "Monarchs are considered to be a flagship species for conservation，" said
Cornell researcher Linda Raynor. "This is a warning bell. "
Some insects that are not killed by GM foods might find themselves made stronger. How so？ The insecticides used to protect most of today"s crops are sprayed on the crops when needed and decay quickly in the environment. But GM plants produce a continuous level of insecticide. Insect species feeding on those crops may develop resistance to the plants and could do so in a hurry， say the critics. Insects may also develop a resistance to the insecticide Bt.
At the forum on GM food held last year in Canada， GM crops that have been made resistant to the herbicide might crossbreed with wild plants， creating"superweeds" that could take over whole fields.
So where do you stand？ Should GM foods be banned in the United States， as they are in parts of Europe？ Or do their benefits outweigh any of the risks they might carry？
Paragraphs 1，2&；3 try to give the idea that 查看材料
A.GM foods are particularly good to the kwashiorkor patients
B.GM foods may have both benefits and harm
C.we cannot recognize the benefits of GM foods too early
D.GM foods may bring about great benefits to humans
第9题
When a new kind of cooking oil is used in McDonald's, ______.
A．the prices of McDonald's foods will be much higher
B．consumers will find the taste of McDonald's foods different
C．many other food companies will do what McDonald's does
D．fatness will disappear in American society sooner or later
第10题
听力原文： A study published in September suggests there is a surprising way to get people to avoid unhealthy foods: change their memories. Scientist Elizabeth Loftus of the University of California at Irvine asked volunteers to answer some questions on their personalities and food experiences. "One week later," Loftus says, "we told those people we'd fed their answers into our smart computer and it came up with an account of their early childhood experiences." Some accounts included one key additional detail. "You got sick after eating strawberry ice-cream." The researchers then changed this detail into a manufactured memory through leading questions—Who were you with？ How did you feel？ By the end of the study, up to 41% of those given a false memory believed strawberry ice-cream once made them sick, and many said they'd avoid eating it.
When Loftus published her findings, she started getting calls from people begging her to make them remember hating chocolate or French fries. Unfortunately, it's not that easy. False memories appear to work only for foods you don't cat on a regular basis. But most important, it is likely that false memories can be implanted only in people who are unaware of the mental control. And lying to a patient is immoral, even if a doctor believes it's for the patient's benefit.
Loftus says there's nothing to stop parents from trying it with their overweight children. "I say, wake up—parents have been lying about Father Christmas for years, and nobody seems to mind. If they can prevent diseases caused by fatness and all the other problems that come with that, you might think that's a more moral lie. Decide that for yourself."
(33)
A．To improve her computer program.
B．To find out their attitudes towards food.
C．To find out details she can make use of.
D．To predict what food they'll like in the future.
第11题
History is important to us because ______.
A．it teaches us how to do when we meet some difficulties
B．it offers us the way to overcome frustrations
C．it makes us conscious of the present and the future
D．it makes us aware of getting out of the predicament
