阅读理解:阅读下列短文, 从所给的四个选项中, 选出最佳答案。
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
(证实) that rats will, when given a choice over a period of time,
prefer water with vitamins (维生素) to water without vitamins, even
though there is no difference in taste or smell between the two water
bottles. When a fragrant flavor (香味) was added to the
vitamin—enriched liquid, the rats did seem to develop a taste for it
and kept drinking it, even after the vitamins were switched (转) to
the clear water. In time, however, they broke the habit and went back
to where the necessary vitamins were.
In an experiment, babies of 6 to 12 months old were placed in a
cafeteria (自助食堂) with a wide selection 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 over a period of time they managed to select a well
balanced diet (饮食).
So, in selecting food, rats and babies do seem to know and act on
what's best for them. Clearly, there is a kind of "body wisdom" which
humans soon lose. Most of us do not eat as wisely as we could. Many
of our food preferences are culturally determined and influenced (影
响) by long-established habits. Some people eat fox, dog and
blackbirds, while we eat cows and pigs. So what people eat and how
much they eat seems to be greatly influenced by what is going on
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 it
B. find out what kind of flavor rats prefer
C. test whether rats know which drink is with fragrant flavor
D. demonstrate that vitamins are tasteless
(2)The expression "the habit" in the first paragraph refers to
drinking water which __________.
[ ]
A. has no smell B. is tasteless
C. has vitamins D. is flavored
(3)As far as their eating habits are concerned, babies and rats
are similar (相似) because ___________.
[ ]
A. both have the wisdom to choose a balanced diet
B. both prefer flavored food and drink
C. both have the same eating patterns
D. both develop a taste for the same kinds of flavors
(4)In the experiment mentioned in the second paragraph, babies
were _________.
A. given 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
(5)According to the passage, adults' (成年人) 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 usually cannot resist the temptation of various
delicious foods
C. adults' eating habits are closely related to the social and
cultural customs
D. adults have more choices of food than babies in eating
patterns
