When you cut your skin, you bleed (流血). If a person 1 a lot of blood, he will become
ill and may 2 . Blood is very important.
People have always known that. At one time people even drank blood 3 themselves 4 .
When doctors
understand 5 blood goes around inside the body, they
try ways of giving blood to people 6 need it. They take blood from the healthy
people and give it to people who need it. This is called “blood translation”.
The blood goes from the arm of the healthy person 7 the arm of the sick person.
But there are two problems. First, it does
not always work. Sometimes people die when they have blood transfusion. Later,
doctors find that we do not all have 8 kind of blood. There are four groups O,
A, B and AB. We all have blood of one of these groups. They 9 find that they can give 10 kind of blood to people of group AB. But
they find that they must give A-group blood to A-group people and B-group blood
to B-group people. I have O-group blood and the doctor told me that I could
give blood to anyone else 11 .
There is 12 problem. To give blood of the right kind,
doctors have to find a person of the right blood group. Often they can’t find a
person in time. If they have a way to keep the blood until someone needs it,
they can always have the right kind of blood. At first they find they keep it
in bottles for fifteen to twenty days. They do this by making it very old. Then
they find how to 13 it longer. In the end they find a way of
keeping blood for a very long time.
We call a place where we keep money a “bank”.
We call a place where we keep blood a “blood bank”. One day, when you grow up,
you may decide to give blood to a blood bank. 14 you may stop someone 15 dying. Or perhaps one day you may become
ill. You may need blood. The blood bank will give it to you.
(
) 1. A. lose B. loses C.
losing D. will lose
(
) 2. A. dead B. be died C. die D.
death
(
) 3. A. made B. making C. makes D.
to make
(
) 4. A. strong B. strongly C. more
strongly D. weakly
(
) 5. A. what B. when C.
why D.
how
(
) 6. A. / B. it C.
which D. who
(
) 7. A. in B. on C. into D. onto
(
) 8. A. same B. different C. / D. the same
(
) 9. A. too B. either C. neither D. also
10.(
)A. all
B. both C. either D. any
11.(
)A. safety B. safe C. safely D. more safe
12.(
)A. the others
B. other C. the other D. another
13.(
)A. let
B. make C. find D. keep
14.(
)A. On the way
B. In this way
C. By the way D. In a way
15.(
)A. on B. in
C.
from D. to