阅读理解。
An American went to a small town in South America for his holidays. Few people went there because it
was far away from cities. One day he fell ill and wanted very much to see a doctor.
The American went to find out how he could find a fine doctor there. A man told him."That's very easy. If
there's a patient that a doctor can't cure (治愈), the doctor has to put a balloon (气球) over his clinic (诊
所)."
The American thought, "If there are fewer balloons,the doctor will be better." He began to look for the best
doctor along the street. First he found a clinic wim 20 balloons. after a few minutes he found another one with
30 balloons. He thought they weren't the best.
At last he found the third clinic. Only 5 balloons were there. He was very happy and went in. "Wait a
minute,"said the doctor." I'm too busy,you know. This clinic opened yesterday." The American was very
surprised and said to himself,"Where can I find the best doctor?".
1. Few people went to the small town for their holidays because____
A. it was too small
B. it was dangerous there
C. the service there was bad
2. The American wanted to find a clinic______.
A. because he didn't feel well
B. to see if there were balloons over it
C. to find out how a doctor worked there
3. There were_____ balloons over the second clinic than the first one.
A. less
B. more
C. better
4. The doctor in the third clinic was_____.
A. just the one the American wanted
B. the best
C. better than the first one
5. How long was the third clinic open?
A. For a week
B. For two days.
C. For a year
时，需要做一些假设和选择一些理论依据，下列必要的假设和理论依据有 ( )．
