[填空题]Some farmers may replant corn. Others may (47) corn with soybeans (大豆). What farmers do now depends partly on the (48) of damage to the land. Floodwaters in some areas may contain industrial waste or other (49) substances.
What the weather does during the rest of the growing season will also be very (50) . Rain delay has (51) soybean planting behind the five-year average in twelve of eighteen major soybean-producing states. Other crops including wheat, rice and oats have also (52) .
In Burlington, Iowa, as many as fifty trains normally pass through the city every day, (53) carrying coal or passengers. But Burlington is quiet now until water is off the rails and workers can inspect for damage. City Manager Doug Worden says Burlington took steps to prevent (54) property damage after the record floods of fifteen years ago.
While the Midwest (55) with recent flooding, the n

[填空题]Some farmers may replant corn. Others may (47) corn with soybeans (大豆). What farmers do now depends partly on the (48) of damage to the land. Floodwaters in some areas may contain industrial waste or other (49) substances.
What the weather does during the rest of the growing season will also be very (50) . Rain delay has (51) soybean planting behind the five-year average in twelve of eighteen major soybean-producing states. Other crops including wheat, rice and oats have also (52) .
In Burlington, Iowa, as many as fifty trains normally pass through the city every day, (53) carrying coal or passengers. But Burlington is quiet now until water is off the rails and workers can inspect for damage. City Manager Doug Worden says Burlington took steps to prevent (54) property damage after the record floods of fifteen years ago.
While the Midwest (55) with recent flooding, the n

[单项选择]When ancient farmers first domesticated wheat some 10,000 years ago, they were trying to breed a crop perfectly suited to making food. But it seems that somewhere along the line, farmers unwittingly(无意地) took out a gene that packs the plant full of goodness. Now researchers have found a way to fix that old mistake and put the nutrients back.
A team led by Jorge Dubcovsky of the University of California, looked at more than 90 varieties of the two major types of wheat that are today cultivated for making pasta and bread--foodstuffs that account for around 20% of all calories consumed worldwide. In all of these strains, the researchers found a mutation(突变) that reduces the amount of protein, zinc and iron in the grain.
The researchers have successfully crossed wild and crop strains to create a new variety with increased micronutrient (微量营养素) levels and 10% more protein than traditional farm strains. The discovery could help many of the estimated 2 billion people with defici
A. They accidentally took out a gene, which reduced wheat’s nutrient level.
B. They fixed the stupid mistakes made by their ancestors.
C. They packed wheat full of goodness and transformed it into a kind of food.
D. They put extra nutrients which are good for them into wheat.

[填空题]The abundance of food may be disastrous to farmers because of

[填空题]Some farmers didn’t get seeds to plant this season.

[填空题]Under no circumstances may organic farmers use any pesticides, including botanical pesticides.

[填空题]The things that some desperate farmers do to feed themselves and their families.

[判断题]Some children may still have to take an exam called "eleven-plus" nowadays.