Question

阅读理解

阅读下列短文，从每题所给的四个选项(A、B、C、D)中选出最佳选项。

　　Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need. It has been demonstrated (证明) that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins, even though there is no difference in taste or smell between the two water bottles. When a fragrant (芬香的) flavor (味道、佐料) was added to the vitamins - enriched fluid, the rats did seem to develop a taste for it and kept drinking it, even after the vitamins were changed to the clear water. In time, however, they broke the habit and went back to where the necessary vitamins were.

　　In a classic experiments, babies of 6 to 12 months old were placed in a cafeteria (自助餐厅) feeding arrangement, with a wide choice of baby food before them. They were given whatever food they pointed to or appeared interested in. We are told that at first they showed some unusual eating patterns, but that over a period of time they managed to choose a well - balanced diet.

　　So in choosing food, rats and babies do seem to know and act on what's best for them. Obviously, there is a kind of “boby wisdom”, which humans soon lose, Most of us do not eat as wisely as we could. Many of our food preference are culturally determined and influenced by long established habits. Some people eat foxes, dogs and blackbirds, while we eat cows and pigs, So what people eat and how many they eat seems to be greatly influenced by what is going around them.

1．In the experiment on rats, a fragrant flavor was added to the rat's drinking water to ________.

[　　]

A．encourage rats to drink vitamins - enriched water

B．find out rat's preference in flavour

C．test whether rats know which drink is good for them

D．Demonstrate the vitamins are tasteless

2．As far as their eating habits are concerned, babies and rats are similar in that ________.

[　　]

A．both have the wisdom to choose a balanced diet

B．both prefer flavoured food and drink

C．both have the same eating patterns

D．both develop a taste for the same kinds of flavours

3．In the classic experiment mentioned in the second paragraph, babies were ________.

[　　]

A．give many choices of drinks

B．provided with various kinds of baby food

C．placed and fed in a cafeteria

D．trained to select a balanced diet

4．According to the passage, adults' eating habits differ from those of babies because ________.

[　　]

A．adults know better than babies what kinds of food are good for their health

B．adults ususlly cannot resist the temptation of various delicious foods

C．adult's eating habits are closely related to the social and cultural customs

D．adults have more choices of food than babies in eating patterns

Answer 1

答案：C;A;B;C