(   ) 15. ―Do you know         ？

―Next Sunday.

   A. what they will do   B. when will they meet

   C. when they will come here   D. who they will meet

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A The food we eat seems to have a great influence on our health. Although science has made big steps in making food more fit to eat,it has,at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of human illness is caused by food and forty percent of cancer is caused by food as well. That food can cause illness is not a new discovery. In 1945,some researchers realized that things that are commonly used to keep color in meat and other food additives (添加劑) caused cancer.

Yet,these additives remain in our food,and it is difficult to know which things on the   wrappings     of foods are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin (青霄素) to their animals,and because of this,penicillin has been found in the milk of cows. Sometimes similar things are provided to animals not for their health,but just to make money.

The farmers are simply trying to fatten the animals in order to get a higher price on the market. Although some countries have tried to control (控制) such things,the practice continues.

(   ) 31. According to this passage,we can know         .

   A. cancer was discovered in 1945

   B. science has made food unfit to eat

   C. perhaps most of human illness is caused by what we eat

   D. perhaps most kinds of cancer are caused by what people eat

(   ) 32. Things that are used to keep colors in meat are         .

   A. harmful   B. useless   C. helpless   D. dangerous

(   ) 33. People use additives .

   A. to change color of the food

   B. to make food more unfit to eat

   C. to take off the diseases of the food

   D. to improve the color and taste of the food

(   ) 34. The underlined word  wrappings  means        in Chinese.

   A. 內(nèi)容   B. 包裝   C. 供給   D. 營(yíng)養(yǎng)

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   A. We needn't take care of what we eat.

   B. Some wrappings of food are harmful.

   C. "The practice continues" means "things are still going on like that".

   D. Farmers try to make more money on the market by fattening their animals.

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