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Are organically grown foods the best food choices?The advantages claimed for such foods ov

er【C1】______grown and marketed food products are now being debated.【C2】______of organic foods-a term whose meaning varies greatly-frequently proclaim that【C3】______products are safer and more nutritious than others.

The growing interest of【C4】______in the safety and nutritional quality of the typical North American diet is a welcome development.【C5】______,much of this interest has been sparked by sweeping claims that the food supply is unsafe or inadequate in meeting nutritional needs.Although most of these【C6】______are not supported by scientific evidence,the preponderance(优势)of written material【C7】______such claims makes it difficult for the general public to separate fact from【C8】______.As a result,claims that eating a diet【C9】______entirely of organically grown foods prevents or【C10】______disease or provides other benefits to health have become widely【C11】______and form. the basis for folklore.Almost daily the public is【C12】______by claims for“no-aging”diets,new vitamins and other【C13】______foods.There are numerous unsubstantiated reports that【C14】______vitamins are superior to synthetic ones,that fertilized eggs are nutritionally【C15】______than unfertilized eggs and the【C16】______.

One thing that most organically grown food products seem to have in common is that they【C17】______more than conventionally grown foods.But in many cases consumers are【C18】______if they believe organic foods can maintain health and provide better nutritional quality than conventionally grown foods.So there is real cause for concern if consumers particularly those with【C19】______incomes,distrust the【C20】______food supply and buy only expensive organic foods instead.

【C1】

A.conventional

B.traditional

C.formal

D.normal

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更多“Are organically grown foods th…”相关的问题
第1题
Organic Food Organic farming was among the fastest growing segments of U.S. agriculture du

Organic Food

Organic farming was among the fastest growing segments of U.S. agriculture during the 1990s. The value of retail. sales of organic food was estimated to be $16 billion in 2004. According to the Food Marketing Institute, more than half of Americans now buy organic food at least once a month. Why is organic food becoming so popular?

What is Organic Food?

In December 2000, the National Organic Standards Board of the U.S. Department of Agriculture (USDA) established a national standard for the term "organic". Organic food, defined by how it cannot be made rather than how it can be made, must be produced without the use of sewer-sludge fertilizers, most synthetic fertilizers and pesticides, genetic engineering (biotechnology), growth hormones, irradiation and antibiotics. A variety of agricultural products can be produced organically, including produce, grains, meat, dairy, eggs, and processed food products.

"Organic" does not mean "natural". There is no legal definition as to what constitutes a "natural" food. However, the food industry uses the term "natural" to indicate that a food has been minimally processed and is preservative-free. Natural foods can include organic foods, but not all natural foods are organic. Only foods labeled "organic" have been certified as meeting USDA organic standards.

Organic Farming

The phrase 'organic farming' — first appeared in Lord Northbourne's book Look to the Land, published in 1940. But the truth is, organic farming is the oldest form. of agriculture. Before the end of World War Ⅱ, farming without the use of petroleum-based chemicals (synthetic fertilizers and pesticides) was the only option for farmers. Technologies developed during the war were found to be useful for agricultural production. For example, the chemical ammonium nitrate (硝酸铵), which was used as munitions (军需品), became useful as fertilizer, and organophosphates (有机磷酸盐) used for nerve gas were later used as insecticide.

These days, farmers are switching to organic agriculture once again, but now with an ecologically based, systematic approach that includes long-term planning, detailed record keeping and major investment in equipment and supplies. Although it is still only a small industry, the number of organic farmers is growing by about 12 percent per year and now stands at more than 12,000 nationwide.

Organic Farming in the U.S. Today

The USDA's Economic Research Service reports that in 1997, the latest year for which data are available, farmers in 49 states used organic production methods and thirdVparty organic certification services on 1.35 million acres out of a total of 828 million acres of farmland. Approximately two-thirds of the certified U.S. organic farmland was used for crops, and one-third was used as pasture.

Large farms, mostly located in the Midwest and West, produced processed tomatoes, organic wine grapes and other high-value crops on a commercial scale, whereas numerous small farms, concentrated in the Northeast, specialized in mixed vegetable production for direct marketing to consumers and restaurants.

While organic food can be found throughout the country, California was the leader in production of organic fruits and vegetables in 1997, followed closely by Arizona, Florida, Texas, and Washington in decreasing order of total yield. Farmers and ranchers in 23 states raised a small number of certified organic cows, hogs and sheep. New York, Wisconsin and Minnesota were the top producers of organic dairy cows.

Production: Organic vs. Conventional

As you can imagine, organic agricultural practices are quite distinct from those of "conventional" fanning.

Organic farmers:

feed soil and build soil matter with natural fertilizer to grow their crops use insect predators, mating disruption, traps and barriers to protect crops from

A.Y

B.N

C.NG

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第2题
The young man has a wife and two children to ().

A.grow

B.rose

C.keep

D.case

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第3题
In China, some rivers are so polluted that fish can' t grow in them.A.YB.NC.NG

In China, some rivers are so polluted that fish can' t grow in them.

A.Y

B.N

C.NG

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第4题
A letter of credit would __ the cost of our imports.

A.reduce

B.raise

C.grow

D.drop

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第5题
A.To save space.B.To help the plants grow healthily.C.To make plants yield more fruits

A.To save space.

B.To help the plants grow healthily.

C.To make plants yield more fruits.

D.To water the plants easily.

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第6题
A.They grow up to be funny and charming.B.They often have a poor sense of direction.C.

A.They grow up to be funny and charming.

B.They often have a poor sense of direction.

C.They get less attention from their parents.

D.They tend to be smart and strong-willed.

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第7题
Children are______ to have some accidents as they grow up.A.apparentB.indispensableC.bound

Children are______ to have some accidents as they grow up.

A.apparent

B.indispensable

C.bound

D.doubtless

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第8题
Another technical advance in gardening in the 19th century was that people could grow plan
ts in containers in spring and autumn only.

A.Y

B.N

C.NG

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第9题
论述教练技术培训的GROW模型。

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第10题
你设想的理想会议是什么样属于GROW中现状步骤()
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