Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.

Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes(酶)that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic (酸性的). To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.

Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat . Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism(新陈代谢) becomes inactive, and then result is weight gain and obesity.

The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.

To stop this vicious(恶性的) circle in its tracks, people need to consume food and supplements that will neutralize （使…中和）the acid already accumulated in body. Eating the right types of raw and whole foods can help. it’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself , you need to take an active approach..

1.. What is the main purpose of this passage?   

A. To advocate eating more raw and whole foods     

B. To tell the differences between raw and processed foods

C. To inform people of the harm of processed foods 

D. To warn people of the problem of obesity

2.. It can be inferred from Para. 2 that     

A. it is essential for people to protect their vital organs              

B. foods with natural enzymes help people keep fit

C. we’d better be cautious about raw and whole foods   

D. giving up cooked and refined foods is a new lifestyle

3.. Processed foods are unhealthy because they     

A. destroy body’s cells                                            B. are difficult to digest

C. may lead to obesity                                            D. stop body’s metabolism

4.. What is likely to be talked about following the last paragraph?

A. Active approaches to avoid acid    .                  B. Different causes of acid accumulation.

C. Correct ways to cook raw foods     .                  D. Suitable types of raw and whole foods.

5.. What can we learn from the text?

A. Processed foods are good for our appetite mechanism

B. Eating the right types of raw and whole foods does good to our body

C. The accumulation of acid in the digestive tract makes digestion more effective

D. Processed foods also comfort the digestive tract

In the past industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They did not have to pay much attention to the health and safety of the people who worked for them. Often new products were dangerous for the people who used them; often conditions in the work place had very bad effects on the health of the workers.

Of course sometimes there were real disasters which attracted the attention of governments and which showed need for changes. Also scientists who were doing research into the health of workers sometimes produced information which governments could not ignore. At such times, there were inquiries into the causes of the disaster or the problems. New safety rules were often introduced as a result of these inquiries; however，the new rules came too late to protect the people who had died or become seriously ill.

Today many governments have special departments which protect customers and workers. In the U.S., for example, there is a department which tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work, and then reports any companies that are breaking laws which protect the health and safety of workers.

1.

 According to Paragraph 1, compared with today, industries in the past __________.

A. were controlled less strictly

B. were worse off

C. affected more peoples health

D. put out more unhealthy products.

2.

It is implied in Paragraph 2 that years ago governments __________.

A. paid much attention to the results of scientific discoveries

B. seldom introduced safety laws before disasters occurred

C. hardly ever looked into the causes of tragedies

D. imposed safety rules as soon as disasters occurred

3.

The main topic of the passage is __________.

A. industries in the past and at present

B. changes in the development of industries

C. the protection of industrial workers and customers

D. the freedom of industries

4.

 The purpose of this passage is to __________.

A. inform             B. criticize     C. entertain             D. persuade

In the past industries had more freedom than they have now, and they did not need to be as careful as they must today. They did not need to worry a lot about the safety of the new products that they developed. They did not have to pay much attention to the health and safety of the people who worked for them. Often new products were dangerous for the people who used them; often conditions in the work place had very bad effects on the health of the workers.

Of course sometimes there were real disasters which attracted the attention of governments and which showed need for changes. Also scientists who were doing research into the health of workers sometimes produced information which governments could not ignore. At such times, there were inquiries into the causes of the disaster or the problems. New safety rules were often introduced as a result of these inquiries; however，the new rules came too late to protect the people who had died or become seriously ill.

Today many governments have special departments which protect customers and workers. In the U.S., for example, there is a department which tests new airplanes and gives warnings about possible problems. It also makes the rules that aircraft producers must follow. Another department controls the foods and drugs that companies sell. A third department looks at the places where people work, and then reports any companies that are breaking laws which protect the health and safety of workers.

64. According to Paragraph 1, compared with today, industries in the past __________.

A. were controlled less strictly

B. were worse off

C. affected more peoples health

D. put out more unhealthy products.

65. It is implied in Paragraph 2 that years ago governments __________.

A. paid much attention to the results of scientific discoveries

B. seldom introduced safety laws before disasters occurred

C. hardly ever looked into the causes of tragedies

D. imposed safety rules as soon as disasters occurred

66. The main topic of the passage is __________.

A. industries in the past and at present

B. changes in the development of industries

C. the protection of industrial workers and customers

D. the freedom of industries

67. The purpose of this passage is to __________.

A. inform                     B. criticize                    C. entertain                 D. persuade