Today our knowledge of food and what it does for our bodies is far more advanced than that of the ancients. Now we know about vitamins and how each k

Today our knowledge of food and what it does for our bodies is far more advanced than that of the
ancients. Now we know about vitamins and how each kind of vitamin helps in the growth of a particular
part of our bodies. There are on the market all kinds of vitamin pills which one can take to make up for
one’s lack of certain important things which are needed for normal health. Of course, if we eat well and
properly, the food that we eat will take care of our bodies without these pills and so there no need to take
any kinds of vitamin pills unless our doctor tells us that our bodies are short of something which can be
supplied by them.
Generally speaking, everything we eat does some good to our bodies, but if we eat too much of one kind
of food and pay no attention to others, we may have too much of one kind of chemical substances and not
enough of others. Then, we may be in trouble.
We are often told that we must eat some meat at each meal in order to get the necessary protein. That is
only partly true, for proteins are not only found in meat. We can also get them from some vegetables. The
best advice about what to eat is that we should eat all kinds of food but never too much of any.
41. According to the passage, we now know _______________.
A. more and more about food and health
B. what food is fit to eat
C. how many kinds of vitamins there are
D. more about the growth of our bodies
42. People take certain vitamin pills when they ______________.
A. find their bodies are short of something
B. want to eat well and properly
C. want to cure some diseases
D. think certain foods don’t agree with them
43. The writer thinks we should _____________.
A. be careful in choosing food B. eat special food
B. have limited food D. have balanced food
44. According to the passage, to get proteins, we must eat _________.
A. more meat B. only vegetables
C. both meat and vegetables D. food and vitamin pills
45. The main topic of the passage is ____________.
A. food and health B. vitamins and proteins
C. meat, vegetables and proteins D. food and vitamin pills