Part IV Reading Comprehension Reading in Depth (35 minutes)
12、Directions : In this section, there is a passage with ten blanks. You are required to select 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.
Questions12-22are based on the following passage.
　　The food we eat seems to have significant effects on our health. Although science has made enormous　1　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 illnesses are related to diet and forty percent of cancer is related to the diet as well,　2　cancer of the colon. Different cultures are more likely to　3　certain illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new　4　. In 1945, government researchers realized that nitrates (硝酸盐) and nitrites (亚硝酸盐),　5　used to preserve colors in meats, and other food additives, caused cancer. Yet, these additives remain in our food, and it becomes more difficult all the time to know which things on the packaging　6　of processed food are helpful or harmful. The additives that we eat are not all so　7　. Farmers often give penicillin to beef and fowl and because of this, penicillin has been found in the milk of　8　cows. Sometimes similar drugs are given to animals not for medical purposes, but for　9　reasons. The farmers are simply trying to fatten the animals in order to　10　a higher price on the market. Although the Food and Drug Administration has tried repeatedly to control these procedures, the practices continue.
A．contract 　　F．treated 　　 K．steps
B．labels 　　 G．measures  　　L．signatures
E．direct 　　 H．obtain  　　M．discovery
D．especially  　　I．invention  　　N．related
E．social 　　 J．commonly  　　0．financial

Although science has made enormous　1　in making food more fit to eat, it has,
13、　2　cancer of the colon.
14、Different cultures are more likely to　3　certain illnesses because of the food that is characteristic in these cultures.
15、 That food is related to illness is not a new　4　.
16、,　5　used to preserve colors in meats
17、and it becomes more difficult all the time to know which things on the packaging　6　of processed food are helpful or harmful.
18、The additives that we eat are not all so　7　.
19、penicillin has been found in the milk of　8　cows.
20、but for　9　reasons.
21、The farmers are simply trying to fatten the animals in order to　10　a higher price on the market.