2010年12月英语四级考前每日一练(16)

文章作者 100test 发表时间 2011:03:18 04:29:35
来源 100Test.Com百考试题网

In this section, there is a passage with ten blanks. You are required to 0select one word for each blank from a list of choices given in a word bank following the passage. Read the passage through carefully before making your choices. Each choice in the bank is identified by a letter. Please mark the corresponding letter for each item on Answer Sheet 2 with a single line through the centre. You may not use any of the words in the bank more than once.

Questions 47 to 56 are based on the following passage.
　　The food we eat seems to have profound effects on our health. 47 science has made enormous 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 all human 48 are related to diet and forty percent of cancer is related to the diet as well, 49 cancer of the colon (结肠癌). Different cultures are more prone to 50 certain illnesses because of the food that is 51 in these cultures. That food is related to illness is not a new discovery. In 1945, government researchers realized that nitrates and nitrites (硝酸盐和亚硝酸盐), commonly used to preserve color in meats, and other food additives, 52 cancer. Yet, these carcinogenic (致癌的) additives(添加剂) remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or 53 The additives which we eat are not all so direct. Farmers often give penicillin (青霉素 ) to beef and poultry, and because of this, penicillin has been found in the milk of 54 cows. Sometimes similar drugs are administered to animals not for medicinal purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a 55 price on the market. Although the Food and Drug Administration (FDA) has tried 56 to control these procedures, the practices continue.
　　

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