[简答题]

(46) U.S. farmers are planting more acres of crops using soil building and pollution fighting faming systems than traditional methods that rely on the plow or intensive tillage, according to a report due to be released early next month.
The report, titled "National Crop Residue Management Survey," shows a 6 million acre gain for environmentally friendly farming systems this year.
(47) It also shows traditional farming methods, which result in greater soil erosion and run off from fields, declined by 4 million acres.
(48) The survey, conducted on a county-by-county basis by USDA Natural Resources Conservation Service, indicates that farmers in Iowa, Illinois, South Dakota, Kansas, and Indiana contributed the most to the increase in acres grown with environmentally friendly farming systems known as conservation tillage systems.
These states accounted for 5 million of the 6 million acre increase in conservation tillage t

[简答题]

(46) U.S. farmers are planting more acres of crops using soil building and pollution fighting faming systems than traditional methods that rely on the plow or intensive tillage, according to a report due to be released early next month.
The report, titled "National Crop Residue Management Survey," shows a 6 million acre gain for environmentally friendly farming systems this year.
(47) It also shows traditional farming methods, which result in greater soil erosion and run off from fields, declined by 4 million acres.
(48) The survey, conducted on a county-by-county basis by USDA Natural Resources Conservation Service, indicates that farmers in Iowa, Illinois, South Dakota, Kansas, and Indiana contributed the most to the increase in acres grown with environmentally friendly farming systems known as conservation tillage systems.
These states accounted for 5 million of the 6 million acre increase in conservation tillage t

[单项选择]Farmers are more anxious for rain than people in cities because they have more at ______.
A. danger
B. stake
C. loss
D. threat

[单项选择]The farmers were more anxious for rain than the people in the city because they had more at ______.
A. danger
B. stake
C. loss
D. threat

[简答题]Task 6 【名词解释】：老师讲很多farmers讨厌在他们的crops 旁边长weeds，但是其实它有助于crops成长。 【教授举例】：用咖啡举例子，帮助protect fertilized soil wont be flushed away by water. Prevent coffee’s leaves from being eaten by insects weeds protect coffee的原因是 insects prefer weeds than coffee

[单项选择]A. They made farmers more independent.
B. They decreased the power of the railroads to control the prices of farm products.
C. They affected the prices that farmers could receive for their crops.
D. They strengthen world commercial ties.

[单项选择]If the weather had been more favourable, the crops ______ still better now.
A. would be growing
B. are growing
C. will be growing
D. would have grown

[填空题]More than 20 (vary) ______ of crops, such as rice, cotton and peanuts, are grown.

[单项选择]A. Farmers relied less on imports.
B. Farmers became more dependent on bank loans.
C. The costs for shipping farm products by train increased.
D. Prices for farm products went up.

[单项选择]Are genetically modified crops an environmental dream come true or a disaster in the making Scientists are looking for answers.
The world seems increasingly divided into those who favor genetically modified (GM) foods and those who fear them. Advocates assert that growing genetically altered crops can be kinder to the environment and that eating foods from those plants is perfectly safe. And, they say, genetic engineering—which can induce plants to grow in poor soils or to produce more nutritious foods— will soon become an essential tool for helping to feed the world’s burgeoning population. Skeptics contend that GM crops could pose unique risks to the environment and to health—risks too troubling to accept smoothly. Taking that view, many European countries are restricting the planting and importation of GM agricultural products. Much of the debate hinges on perceptions of safety. But what exactly does recent scientific research say about the hazards The answers, too often lost i
A. Being easy to survive.
B. Bigger production than traditional plants.
C. Enriching our food.
D. Benefiting the environment.

[单项选择]

Scientists have rediscovered certain food crops, once commonly cultivated in the New World, which contain more protein per pound than do current staple food crops such as rice and wheat. Scientists claim that cultivation of these crops could greatly benefit densely populated countries that have low per-person calorie intake and inadequate source of protein.
Which of the following, if true, casts the most serious doubt on the claim made above（）

A. The average yield per acre of the rediscovered crops is substantially less than that of the current staple food crops
B. Many important food crops, such as tomato, originated in the New World
C. Wheat yields more protein per pound than does rice
D. The rediscovered crops have more caloric per pound than do current, staple food crops
E. As few as 20 different food crops provide the bulk of the planet’s food supply

[单项选择]Some crops are relatively high yielders and could be planted in preference to others to ______ the food supply.
A. enhance
B. curb
C. disrupt
D. heighten