|
二、完形填空
(
本大题共
10
小题，每小题
1
分，共
10
分
)
从选择项中选择一个最适合短文的选项，错选、多选或未选均无分。
Human beings act in a different way from
21
of animals just because they can speak while animals cannot. Even the cleverest animals cannot do things which to us seem very
22
and which small children, as soon as they learn to talk, would be able to do.
A German scientist, who
23
experiments for many years with big apes, found that his apes could use his sticks as tools to pull down bananas which they could not
24 . But they only used the stick to get a banana when both the banana and the stick were in view at the same time. If the banana was in front of them and the stick was behind them, they could not use the stick. They could not keep the banana
25
enough in mind to look around and then pick up the stick and use it.
The
26
for this is clear. We have words for banana and stick which help use to think about these things when they are not in
27 . Even a small child knowing the words
“
banana
”
and
“
stick
”
has an idea of their relationship and is able to think
“
stick
”
together with
“
banana
”
and to remember this long enough to pick the stick
28
behind and use it on the banana.
29
to speak, animals cannot keep their knowledge of things for long. That is why they often interrupt one line of action to do something else and later forget it completely. Human beings, on the other hand, use
30
and are able to do one thing continuously.
21. A. that
B. this
C. way
D. eat
22. A. honest
B. foolish
C. simple
D. evident
23. A. carried
B. dealt
C. developed
D. performed
| 
