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Questions 9 to 12 are based on the passage you have just heard.
9.
A.The manufacturers producing the food.
B.The daily expense on the food.
C.The way of producing the food.
D.The places of selling the food.
10.
A.Better consistency, quality and genetics.
B.More efficiency and higher prices.
C.Without pollution and beneficial to health.
D.Better keeping conditions and safer.
11.
A.The waste can pollute waterways, and produce greenhouse gases.
B.The cost of using antibiotics and other chemicals is very high.
C.The place for large-scale production is difficult to find.
D.The hogs may damage apples, old pumpkins and other vegetables.
12.
A.It is the best choice of raising pigs.
B.It is more environmental friendly.
C.It can reduce the price of pork.
D.It will soon replace large-scale production.
