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American officials have sharply reduced their expecmtions for this year's corn and soybean crops．Farmers in the Midwest are struggling with record heat and the worst drought（干旱）in many years．
The United States is the world's largest producer of com and soybeans．Last Friday the Agriculture Department predicted corn production would add up to 10．8 billion bushels this year．That was down 17％from a prediction made just a month ago．And it was down 13％from last year's level．The average yield（产量）per hectare could be the lowest in seventeen years．
At the sarne time，the government predicted that soybean production would be 12％ lower than last year．
The price of corn has hit record levels．Corn is a major part of animal feed，so the price of meat，milk and eggs is also expected to climb．
The FAO says average food prices worldwide rose 6％in July．The American drought was a big reason．
The situation has renewed the fight between food and fuel．About 40％of the nation's corn crop goes into making ethanol（乙醇）．The production process leaves some of that in a form that can be fed to animals．Still，at least one-fourth of the American corn crop is now made into fuel．
The United States requires that part of its corn crop be used in the production of biofuels（生物燃料）．The use of ethanol has grown as government requirements have increased．But Jose，the head of the FAO called for“an immediate，temporary pause”of that requirement．He said more of the American corn production could then be used as food or to feed animals．
The American livestock（家畜）industry is also urging Congress to stop the law that requires ethanol in gasoline．But corn farmer Alan Bennett says doing that would hurt his town．
A 2005 law requires automobile fuel to contain ethanol．The growth of the ethanol industry and competition for corn has been helping parts of rural America that had been reducing for years．
66．What's the main idea of the passage?
A．Average food prices rose all over the world．
B．The decrease of crops in America restarted the fight between food and fuel．
C．The argument between farmers and the American livestock industry came up．
D．America produces most of the corn and soybeans in the world．
67．What does the writer want to indicate using so much data in Paragraph 2?
A．The production of corn and soybeans in America reduces sharply．
B．American officials predicted that corn production would reduce．
C．America is the world's largest producer of corn and soybeans．
D．Farmers in the Midwest of America are having a hard time．
68．Why did average food prices worldwide rise 6％in July?
A．Because the price of corn crop has got to the top of history．
B．Because much of the corn crop in the world goes into making ethanol．
C．Because America is suffering the worst drought．
D．Because most of the corn has been fed to animals．
69．Which of the following statements is TRUE?
A．Ethanol should be added to all gasoline according to the American law．
B．Forty percent of the nation's com crop is now made into fuel
C．America requires the use of ethanol be stopped temporarily．
D．Most American corn has been used as food or to feed animals．
70．What can we infer from the last two paragraphs?
A．The requirement of ethanol really hurts parts of rural America．
B．There is some competition between the ethanol industry and rural America．
C．The law that requires ethanol in gasoline will be passed before long．
D．The farmers in America benefited greatly from the requirement of ethanol．
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