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. 22 the cleverest animals cannot do things which to us seem very

　　23 and which small children, 24 they learn to talk, would be able to do.

　　A German scientist, who 25 experiments for many years with big apes, found that his apes could 26 his sticks as tools to pull down bananas which they could not 27 . But they only used the stick to get a banana when both the banana and the stick were 28 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 29 the banana 30 enough in mind to look around and then pick up the stick and use it.

　　21. A. that

　　B. this

　　C. way

　　D. eat

　　22. A. Even if

　　B. Even

　　C. Though

　　D. When

　　23. A. honest

　　B. foolish

　　C. simple

　　D. evident

　　24. A. as soon as

　　B. as long as

　　C. as far as

　　D. so long as

　　25. A. carried

　　B. dealt

　　C. developed

　　D. performed

　　26. A. take

　　B. hold

　　C. use

　　D. regard

　　27. A. get

　　B. reach

　　C. eat

　　D. take

　　28. A. in

　　B. beyond

　　C. for

　　D. with

　　29. A. maintain

　　B. keep

　　C. remain

　　D. insert

　　30. A. clear

　　B. alive

　　C. long

　　D. complete