Question

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. 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 the 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 circle in its tracks, people need to consume food and supplements that will neutralize 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.It can be inferred from Para. 2 that __________.

A. foods with natural enzymes help people keep fit

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

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

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

2.Processed foods are unhealthy because they __________.

A. destroy body’s cells     B. stop body’s metabolism

C. may lead to obesity     D. are difficult to digest

3.What is the main purpose of this passage?

A. To warn people of the problem of obesity.

B. To advocate eating more raw and whole foods.

C. To inform people of the harm of processed foods.

D. To tell the differences between raw and processed foods.

4.The underline word “vicious” in the last paragraph probably means ____________.

A. violent   B. progressive   C. positive  D. harmful

Answer

1.A

2.C

3.B

4.D

【解析】

1.根据第二段所讲的内容，可知此段主要讲述了酶如何帮助消化，从而防止过度肥胖，因此，此意思与A选项的意思一致，故选A。

2.根据文章中的第三段中所讲的Processed foods 的坏处：“might confuse the appetite mechanism that tells us when we’ve had enough to eat”以及“upset the digestive cycle”，进而文章再讲这两种情况都会导致过度肥胖，因此可推断选C正确。

3.从文章的第一段就提出为什么要吃raw foods 和 whole foods，作者马上给了一个肯定的答案，继而下面讲述吃raw foods 和 whole foods的好处以及吃processed foods 和cooked foods的一些危害，可知全文的写作目的就是要倡导读者多吃raw foods 和 whole foods， 故选B。

4.根据语境并结合选项的意思，可知此处是讲一种恶心循环，故选D。