..19.- Is my illness serious?- ____________.A Well done.B Do

..
19.- Is my illness serious?- ____________.
A Well done.
B Don't worry.You will be well soon.
C Sorry,I have no idea.
D It's really bad for you.
交际英语20.- I'm afraid I cannot pass the exam.- ________.
A Why not?You can do it!
B You are right.
C The same to you.
D I hope so!
21.Money exists as a convenient tool to ____21____ the main problem
associated with barter (物物交换).This problem can be generalized ____22____ the
problem of find someone who both happens to have what you want and also happens
to want ____23____ you have.Imagine that money does not ___24___,but baseball
and baseball cards do.Imagine you want one of Bob’s baseball cards and all you
have is apples.If Bob does not want any ___25___,no trade can take place.To
overcome this problem,you have to find out what Bob DOES WANT.You must then
find someone who ___26___ happens to have what Bob wants and also happens to
want apples.You can then ___27___ some of your apples for the item Bob wants
and then trade with Bob for his baseball cards.This process of trading for
things you don’t want ___28___ you can ultimately trade for what you do want is
called “Indirect Exchange.” As you might ____29____,this can take a lot of time
and effort,and it will not take long before people begin searching for items
that are universally (普遍的) ____20____ in trade by everybody.When this item is
discovered,money is born.
1.A) show B) solve C) understand D) flow
2.A) by B) to C) as D) for
3.A) that B) how C) which D) what
4.A) exist B) happen C) discover D) create
5.A) apples B) money C) barter D) baseball cards
6.A) either B) neither C) both D) as well
7.A) sell B) trade C) buy D) spend
8.A) because B) as long as C) so that D) but
9.A) complete B) hear C) remember D) imagine
10.A) accepted B) missed C) agreed D) ordered

19 B
20 A
BCDAA CBCDA
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