【C13】A.Once and for allB.In a wordC.In additionD.In conclusion
【C13】
A.Once and for all
B.In a word
C.In addition
D.In conclusion
【C13】
A.Once and for all
B.In a word
C.In addition
D.In conclusion
The food we eat seems to have profound effects on our health. 【C1】______ science has made enormous steps 【C2】______ 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【C3】______ are related to diet and forty percent of cancer is related to the diet as well,【C4】______ cancer of the colon (结肠癌). Different cultures are more prone to 【C5】______ certain illnesses because of the food that is 【C6】______ in these cultures. That food is related to illness is 【C7】______ 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(添加剂 ) , 【C8】 ______ cancer. Yet, these carcinogenic (致癌的)additives 【C9】______ in our food, and it becomes more 【C10】______ all the time to know which things on the packaging labels of processed food are helpful or【C11】______ . The additives which we eat are not all so 【C12】______ Farmers often give penicillin (青霉素)to beef and poultry, and 【C13】______ of this, penicillin has been found in the milk of 【C14】 ______ cows. Sometimes similar drugs are 【C15】 ______ to animals not for medicinal purposes, but for 【C16】______reasons. The farmers are simply trying to 【C17】______ the animals in order to obtain a 【C18】______ price on the market. Although the Food and Drug Administration (FDA) has tried 【C19】______ to control these procedures, the practices 【C20】______ .
【C1】
A.Once
B.Because
C.When
D.Although
A.once again
B.in this way
C.twice then
D.immediately
【B17】
A.Once again
B.Once for all
C.Now and then
D.Moreover
How often does the APEC hold its meeting?
A.Once a month.
B.Once a year.
C.Every 10 years.
D.Every Sunday.
A.Once a week.
B.Once a month.
C.Once a semester.
D.Once a year.
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