单选题Fevers cause ______.A prostaglandins to be formedB iron to be made available to bacteriaC leukocytes to be more mobileD lizards to be cold-blooded animals

题目

单选题

Fevers cause ______.

prostaglandins to be formed

iron to be made available to bacteria

leukocytes to be more mobile

lizards to be cold-blooded animals

相似考题

1.This bridge ( ) iron.A、is made ofB、is made fromC、is made by

2.Modern zoos are very different from zoos that were built fifty years ago.At that time, zoos were places (1) people could go to see animals from many parts of the world.They animals lived in cages that were made (2) Concrete with iron bars, cages that were easy to keep clean.Unfortunately for the animals, the cages were small and impossible to hide in.the zoos environment was anything (3) natural.Al though the zoo keepers took good care of the animals and fed them well, many of the animals did not thrive: they behaved in strange ways, and they often became illIn modern zoos, people can see animals in more natural habitats.The animals are(4)more freedom in large areas so that they can live more comfortably as they would in nature Even the appearance of zoos has changed, trees and grass grow in the cages, and streams of water flow (5) the areas that animals live in.(完型填空)A.OfB.ButC.WhereD.OverE.Given

3.A radio medical advice service ______ ships of all nationalities and no charge is made for this service．A.is available toB.is available forC.are available toD.are available for

4.As research techniques become more______(advance)，the number of animals used in experiments may decrease，but stopping testing on animals altogether is a long way away.

参考答案和解析

正确答案： D

解析：
细节理解题。答案在第三段：Leukocytes, white blood cells that are active in fighting bacterial infections, are more mobile at febrile temperatures.

更多“单选题Fevers cause ______.A prostaglandins to be formedB iron to be made available to bacteriaC leukocytes to be more mobileD lizards to be cold-blooded animals”相关问题

第1题：

The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.
What are nitrates used for?

a.They preserve flavor in packaged foods.
b.They preserve the color of meats.
c.They are the objects of research.
d.They cause the animals to become fatter.

答案：B
解析：
第2题：

The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.
The word 'carcinogenic' most nearly means '___'.

a.trouble-making
b.color-retaining
c.money-making
d.cancer-causing

答案：D
解析：
第3题：

共用题干
Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.

What is the attitude the author has toward eating meat?
A:Positive.
B:Negative.
C:Indifferent.
D:None of the above.

答案：B
解析：
由文赣四段第一句话“Many people become vegetthians because they feel that eating animals is unethical.”可知，很多人成为素食主义者是因为似门认为摄食动物是不道德的。故选A。
由文章第二段第五句话“… according to A Teen 's Guide to Going Vegetarian , by Judy Krizmanic , protein is found in almost every food , and iron appears in many vegetable.”可知，在这本书上，作者认为几乎每一种食物中都含有蛋白质。故选C。
由文章第三段可知，在美国大量的粮食和水用于饲养肉食动物，而这些动物所摄入的粮食本身就足以满足全人类的热量需求。这暗示了饲养肉食动物对资源的浪费。由此可以推断出，作者认为少吃肉对环境有利。故选B。
由文章第一段最后一句话“Reducing the amount of meat in one 's diet is nutritionally,environmentally, and ethically beneficial.”可知，减少肉类的摄人在营养、环境和道德方面都是有好处的。并且文章第二、三、四段围绕此观点展开讲解，因此可推测出作者对吃肉持否定态度。故选B。
文章第一段和最后一段互相呼应，讲述了少吃肉的各种好处。中间段落也分别从营养、环境和伦理方面讲述多吃肉的坏处。因此可看出文章主题就是少吃肉的好处。故选A。
第4题：

共用题干
Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.

Which of the following statements is true according to the book A Teen’s Guide to Going Vegetarian?
A:Some of the highest pesticide residues appear in meat and eggs,
B:A meatless diet does not provide enough nutrients.
C:Protein can be found in almost every food,
D:More than 80% of the corn in the U.S.are fed to livestock.

答案：C
解析：
由文赣四段第一句话“Many people become vegetthians because they feel that eating animals is unethical.”可知，很多人成为素食主义者是因为似门认为摄食动物是不道德的。故选A。
由文章第二段第五句话“… according to A Teen 's Guide to Going Vegetarian , by Judy Krizmanic , protein is found in almost every food , and iron appears in many vegetable.”可知，在这本书上，作者认为几乎每一种食物中都含有蛋白质。故选C。
由文章第三段可知，在美国大量的粮食和水用于饲养肉食动物，而这些动物所摄入的粮食本身就足以满足全人类的热量需求。这暗示了饲养肉食动物对资源的浪费。由此可以推断出，作者认为少吃肉对环境有利。故选B。
由文章第一段最后一句话“Reducing the amount of meat in one 's diet is nutritionally,environmentally, and ethically beneficial.”可知，减少肉类的摄人在营养、环境和道德方面都是有好处的。并且文章第二、三、四段围绕此观点展开讲解，因此可推测出作者对吃肉持否定态度。故选B。
文章第一段和最后一段互相呼应，讲述了少吃肉的各种好处。中间段落也分别从营养、环境和伦理方面讲述多吃肉的坏处。因此可看出文章主题就是少吃肉的好处。故选A。
第5题：

共用题干
Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.

Why does the author say reducing the amount of meat in one's diet is environmentally beneficial?
A:People who eat meat usually have weaker immune systems compared to those of vegetarians.
B:A lot of food and water are consumed in order to raise livestock.
C:90% of animals are raised in confinement.
D:Raising Animals causes most of the destruction of the nature.

答案：B
解析：
由文赣四段第一句话“Many people become vegetthians because they feel that eating animals is unethical.”可知，很多人成为素食主义者是因为似门认为摄食动物是不道德的。故选A。
由文章第二段第五句话“… according to A Teen 's Guide to Going Vegetarian , by Judy Krizmanic , protein is found in almost every food , and iron appears in many vegetable.”可知，在这本书上，作者认为几乎每一种食物中都含有蛋白质。故选C。
由文章第三段可知，在美国大量的粮食和水用于饲养肉食动物，而这些动物所摄入的粮食本身就足以满足全人类的热量需求。这暗示了饲养肉食动物对资源的浪费。由此可以推断出，作者认为少吃肉对环境有利。故选B。
由文章第一段最后一句话“Reducing the amount of meat in one 's diet is nutritionally,environmentally, and ethically beneficial.”可知，减少肉类的摄人在营养、环境和道德方面都是有好处的。并且文章第二、三、四段围绕此观点展开讲解，因此可推测出作者对吃肉持否定态度。故选B。
文章第一段和最后一段互相呼应，讲述了少吃肉的各种好处。中间段落也分别从营养、环境和伦理方面讲述多吃肉的坏处。因此可看出文章主题就是少吃肉的好处。故选A。
第6题：

单选题
Which one of the following most seriously undermines the conclusion of this argument?
A
The increasing amount of recycled material made available each year is equal to one-tenth of the increasing amount of natural material consumed annually.
B
Recent studies have shown that the number of endangered animals throughout the world fluctuates sharply and is chiefly determined by changes in meteorological conditions.
C
The logging industry contributes huge sums of money to political campaigns instates where it has a financial interest.
D
The techniques that make recycling possible are constantly improved so that more is reclaimed for lower costs each year.
E
Political contributions by the recycling industry are now greater than those of either the logging or animal protection interests.

正确答案： A
解析：
文段的主要意思是：随着科技的发展，越来越多的垃圾和废物得以循环开发和重新利用，更多副产品得以创造出来，因此那些认为自然资源会枯竭的说法已经不是现实，而且禁止进入濒危动物自然保护区的做法也已经没有必要；题目要求选出会削弱文段论点的选项，即与文意相悖的选项，分析可知，A项指出人们每年回收利用的自然资源和材料只是消耗的十分之一，说明大部分资源没有得以有效利用，与文章立意不符，符合要求；B、C两项的内容与文章无关；D、E两项均与文意相符，不符合要求。因此，正确答案为A项。
第7题：

单选题
The passage implies that ______.
A
the fever process is widespread because moderate fevers have benefits
B
the reduction of fevers can inhibit bacterial growth
C
man can use sun lamp to raise lizards’ temperature
D
Crayfish injected with bacteria have a purpose for moving to hot areas

正确答案： D
解析：
推断题。A选项在原文的第三段第一句可找到基本一致表述，故不正确。B选项说法片面。原文表述为That reduction, combined with high temperatures, has been shown to inhibit bacterial growth. C选项来自第一段，属于偷换概念。正确答案只能是D。来自第二段。
第8题：

单选题
Scorpions injected with prostaglandins move to hot areas to ______.
A
engage in greater activity
B
seek out a more iron environment
C
demonstrate that they are ill
D
develop a fever and fight bacterial infections

正确答案： C
解析：
细节理解题。答案来自第二段的括号部分。
第9题：

单选题
"Cast iron has poor corrosion resistance to sea water, especially in the presence of bronzes" Implies（）.
A
east iron is a cheap material
B
cast iron can pollute sea water
C
cast iron has mere corrosive than bronzes to sea water
D
cast iron is more corrosive to sea water when it meets with bronzes

正确答案： D
解析：暂无解析
第10题：

单选题
Because most，if not all，of the evidence（）the carrier，the burden of proof soon shifts to the carrier，once the claimant has made initial proof of improper care.
A
are available for
B
is available to
C
are available to
D
is available for

正确答案： D
解析：暂无解析
第11题：

单选题
The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue. What is the best possible title of the passage?（）
A
Drug and Food
B
Cancer and Health
C
Food and Health
D
Health and Drug

正确答案： A
解析：暂无解析
第12题：

单选题
Which of the following is not true of British iron and steel industry?（）
A
Britain.s steel industry is declining.
B
No more new discoveries of iron ore have been found in Britain.
C
Supplies of iron ore are now mostly foreign.
D
Compared with newer plants in the world,Britain.s steelworks are not efficient.

正确答案： B
解析：暂无解析
第13题：

The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.
Which of the following statements is NOT ture?

a.Drugs are always given to animals for medical reasons
b.Some of the additives in our food are added to the food itself and some are given to the living animals
c.Researchers have known about the potential dangers of food additives for over thirty-five years.
d.Food may cause forty percent of cancer in world.

答案：A
解析：
第14题：

Passage 2
The food we eat seems to have profound effects on our health. Although 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 illness are related to diet and forty percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures are more prone to contract certain illness because of the food that is characteristic in these cultures.
That food related to illness is not a new discovery. In 1945, government researchers realized that nitrates and nitrites, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives 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 harmful.
The additives which we eat are not all so direct. Farmers often give penicillin to beef and poultry, and because of this, penicillin has been found in the milk of treated cow. 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 higher price on the market. Although the
Food and Drug Administration （FDA） has tried repeatedly to control these procedures, the practices continue.

Why do farmers give drugs to their animals?

A. To speed up the growth of animals.
B. To make the animals fatter.
C. To make the animals' meat fit to eat.
D. To make the animals' meat rich in nutrients.

答案：B
解析：
第15题：

共用题干
Eating Meat-Less or More? Every second in the United States alone,more than 250 animals are slaughtered for food,adding up to more than 8 billion animals each year.Reducing the amount of meat in one's diet is nutritionally, environmentally,and ethically beneficial, People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according to A Teen’s Guide to Going Vegetarian,by Judy Krizmanic,proteil1 is found in almost every food,and iron appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not be difficult.A 1988 study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits and vegetables will only make people healthier. Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite is true.More than 80% of the corn and 95% of the oats grown in the U.S.are fed to livestock.The world's cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire human population.One half of the water used in the Unites States also goes to livestock;250 gallons of water produces only 1 lb.（磅）of beef.If people eat less meat and more plants,the amount of available food will increase。 Many people become vegetarians because they feel that eating animals is unethical.90% of these animals are raised in confinement.Chickens and other birds have only about half a square foot of space each,and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their teeth and tails are removed as soon as they are born. Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the health of the world.

Why do some people become vegetarians?
A:They feel that eating animals is unethical.
B:There are fewer livestock available due to the environmental pollution.
C:The consumption of meat will lead to financial problem.
D:Being a vegetarian is beneficial to the protection of water.

答案：A
解析：
由文赣四段第一句话“Many people become vegetthians because they feel that eating animals is unethical.”可知，很多人成为素食主义者是因为似门认为摄食动物是不道德的。故选A。
由文章第二段第五句话“… according to A Teen 's Guide to Going Vegetarian , by Judy Krizmanic , protein is found in almost every food , and iron appears in many vegetable.”可知，在这本书上，作者认为几乎每一种食物中都含有蛋白质。故选C。
由文章第三段可知，在美国大量的粮食和水用于饲养肉食动物，而这些动物所摄入的粮食本身就足以满足全人类的热量需求。这暗示了饲养肉食动物对资源的浪费。由此可以推断出，作者认为少吃肉对环境有利。故选B。
由文章第一段最后一句话“Reducing the amount of meat in one 's diet is nutritionally,environmentally, and ethically beneficial.”可知，减少肉类的摄人在营养、环境和道德方面都是有好处的。并且文章第二、三、四段围绕此观点展开讲解，因此可推测出作者对吃肉持否定态度。故选B。
文章第一段和最后一段互相呼应，讲述了少吃肉的各种好处。中间段落也分别从营养、环境和伦理方面讲述多吃肉的坏处。因此可看出文章主题就是少吃肉的好处。故选A。
第16题：

共用题干
第三篇

Eating Meat一Less or More?

Every second in the United States alone,mnore than 250 animals are slaughtered for food,adding up to

more than 8 billion animals each year. Reducing the amount of meat in one's diet is nutritionally,environ-

mentally,and ethically beneficial.

People who eat meat usually have weaker immune systems compared to those of vegetarians.Meat has

been directly linked to diabetes,obesity,arthritis,and many other illnesses.Furthermore,meat-eaters are

at a higher risk for diseases,including cancer,and they are more likely to die from these diseases.Critics

say that a meatless diet does not provide enough nutrients,especially protein and iron.Actually,according

to A Teen's Guide to Going Vegetarian,by Judy Krizmanic,protein is found in almost every food,and iron

appears in many vegetables.Getting enough nutrients in a meat-reduced diet should not lie difficult.A 1988

study found that some of the highest pesticide residues appear in meat and eggs.Diets including more fruits

and vegetables will only make people healthier.

Some skeptics believe that there will be a shortage of food if animals are not eaten.In fact,the opposite

is true.More than 80% of the corn and 95%of the oats grown in the U.S.are fed to livestock.The world's

cattle alone consume enough food to equal the caloric needs of 8.7 billion people,more than the entire hu-

man population.One half of the water used in the Unites States also goes to livestock;250 gallons of water

produces only 1 lb.（磅）of beef. If people eat less meat and more plants,the amount of available ftod will

increase。

Many people become vegetarians I)ecause they feel that eating animals is unethical.90%of these ani-

mals are raised in confinement.Chickenls arid other birds have only about half a square foot of space each,

and since they are raised so close together,a lot of blade is used to cut off their beaks to prevent them from

pecking each other to death.Likewise,pigs that are repressed will bite each other's tails,so both their

teeth and tails are removed as soon as they are born.

Eating animals is hazardous in numerous ways.Even a slight reduction in meat intake is better than

nothing at all.Consuming less meat is beneficial to the health of animals,the health of people,and to the

health of the world.

Why do some people become vegetarians?
A:They feel that eating animals is unethical.
B:There are fewer livestock available due to the environmental pollution.
C:The consumption of meat will lead to financial problem.
D:Being a vegetarian is beneficial to the protection of water.

答案：A
解析：
由文章第四段第一句话“Many people become vegetarians because they feel that eating ani- mals 0 is unethical.”可知，选A。

由文章第二段中“…according to A Teen 's Guide to Going Vegetarian, by Judy Krizmanic, protein is found in almost every food,and iron appears in many vegetables.”可知，选C。

文章第三段提到大量的粮食和水用于饲养肉食动物，暗示饲养肉食动物对资源的浪费。由此可以推断出，作者认为少吃肉对环境有利。故选B。

由于每段都提到了吃肉的坏处，所以说作者的杰度是否定的。

第一段和最后一段互相呼应，中间段落也紧扣文章主题，根据内容可以推断文章主题就是少吃肉的好处。故选A。
第17题：

The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue. Which of the following statements is NOT ture?（）
- A、Drugs are always given to animals for medical reasons
- B、Some of the additives in our food are added to the food itself and some are given to the living animals
- C、Researchers have known about the potential dangers of food additives for over thirty-five years.
- D、Food may cause forty percent of cancer in world.
正确答案:A
第18题：

单选题
Skilled blacksmiths who could forge useful items out of it on used to play a central role in American life. The onset of industrialization and the mass production of iron products, however, have made the blacksmith’s traditional role mostly obsolete. Still, there will always be a job available for a good blacksmith.　 Which of the following, if true, provides the most support for the conclusion that a job will always be available for a good blacksmith?
A
Many people are willing to pay considerably more for tools hand-crafted by a blacksmith than for tools created by a machine.
B
Blacksmiths cannot produce iron products with the speed or consistency of machines.
C
Blacksmiths traditionally apprenticed to a master blacksmith for seven or more years before entering business independently.
D
The cowboy never would have conquered the West without the horseshoes crafted by blacksmiths.
E
As skilled craftsmen, blacksmiths traditionally served as community leaders throughout North America and Europe.

正确答案： A
解析：
Ａ项说明铁匠在现代如果可以找到一份好的工作，故本题应选Ａ项。
第19题：

单选题
Which of the following statements is true?
A
Developing fever is the privilege of warm-blooded animals, so sick lizards cannot run a fever.
B
Invertebrates also have the ability to raise their temperature.
C
The internal temperatures of warm-blooded creatures are independent of the weather, so are the cold-blooded animals.
D
Sick lizards move into the sun to develop fever.

正确答案： A
解析：
细节理解题。题目较简单。答案在第二段。
第20题：

单选题
A radio medical advice service（）ships of all nationalities and no charge is made for this service.
A
is available to
B
is available for
C
are available to
D
are available for

正确答案： C
解析：暂无解析
第21题：

单选题
The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue. What are nitrates used for?（）
A
They preserve flavor in packaged foods.
B
They preserve the color of meats.
C
They are the objects of research.
D
They cause the animals to become fatter.

正确答案： D
解析：暂无解析
第22题：

单选题
The food we eat seems to have profound effects on our health.Although 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 illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives 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 harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue. Which of the following statements is NOT ture?（）
A
Drugs are always given to animals for medical reasons
B
Some of the additives in our food are added to the food itself and some are given to the living animals
C
Researchers have known about the potential dangers of food additives for over thirty-five years.
D
Food may cause forty percent of cancer in world.

正确答案： D
解析：暂无解析
第23题：

单选题
It is implied in the passage that _____.
A
people should not take street level transportation
B
tiny iron particles will not cause health problems
C
air pollution on an underground train is less poisonous
D
traveling on an underground train is better than taking the bus

正确答案： D
解析：
第三段第四句：地铁车厢里的空气污染通常比地面街道上的毒性小些，因为地铁里的污染物大多是由车轮与铁轨摩擦产生的铁的微粒组成的。

单选题Fevers cause ______.A prostaglandins to be formedB iron to be made available to bacteriaC leukocytes to be more mobileD lizards to be cold-blooded animals

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