2017年pets3公共英语三级完型填空模拟题（1）
A language is a signaling system which operates with symbolic vocal sounds (语声), and which is used by a group of people for the purpose of communication.
Let's look at this 1 in more detail because it is language, more than anything else, 2 distinguishes man from the rest of the 3 world.
Other animals, it is true, communicate with one another by 4 of cries: for
example, many birds utter 5 calls at the approach of danger; monkeys utter 6 cries, such as expressions of anger, fear and pleasure. 7 these various means of communication differ in important ways 8 human language. For instance, animals' cries do not 9 thoughts and feelings clearly. This means, basically, that they lack structure. They lack the kind of structure that 10 us to divide a human utterance into 11 .
We can change an utterance by 12 one word in it with 13 : a good illustration of this is a soldier who can say, e. g., "tanks approaching from the north", 14 who can change one word and say" aircraft approaching from the north" or "tanks approaching from the west"; but a bird has a single alarm cry, 15 means "danger!"
This is why the number of 16 that an animal can make is very limited: the
great tit (山雀) is a case 17 point; it has about twenty different calls, 18 in human language the number of possible utterances is 19 . It also explains why animal cries are very 20 in meaning.
1. A. classification B. definition
C. function D. perception
2. A. that B. it
C. as D. what
3. A. native B. human
C. physical D. animal
4. A. ways B. means
C. methods D. approaches
5. A. mating B. exciting
C. warning D. boring
6. A. identical B. similar
C. different D. unfamiliar
7. A. But B. Therefore
C. Afterwards D. Furthermore
8. A. about B. with
C. from D. in
9. A. infer B. explain
C. interpret D. express
10. A. encourages B. enables
C. enforces D. ensures
11. A. speeches B. sounds
C. words D. voices
12. A. replacing B. spelling
C. pronouncing D. saying
13. A. ours B. theirs
C. another D. others
14. A. so B. and
C. but D. or
15. A. this B. that
C. which D. it
16. A. signs B. gestures
C. signals D. marks
17. A. in B. at
C. of D. for
18. A. whereas B. since
C. anyhow D. somehow
19. A. boundless B. changeable
C. limitless D. ceaseless
20. A. ordinary B. alike
C. common D. likely
答案： B C C B C C A C D B
C A C B C C A A C B
