Not until Mr. Smith came to China ______what kind of a country she is from.

　 A. Didn’t he know 　 B. Had he known

　 C. Hadn’t he known 　 D. Did he know

From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us.When humans first 1 , they were like newborn children, unable to use this 2 tool.Yet once language developed, the possibilities for human kind?s future 3 and cultural growth increased.

　　Many linguists believe that evolution is 4 for our ability to produce and use language.They 5 that our highly evolved brain provides us 6 an innate language ability not found in lower 7 . Proponents of this innateness theory say that our 8 for language is inborn, but that language itself develops gradually, 9 a function of the growth of the brain during childhood.Therefore there are critical 10 times for language development.

Current 11 of innateness theory are mixed, however, evidence supporting the existence of some innate abilities is undeniable. 12 , more and more schools are discovering that foreign languages are best taught in 13 grades.Young children often can learn several languages by being 14 to them, while adults have a much harder time learning another language once the 15 of their first language have become firmly fixed.

16 some aspects of language are undeniably innate, language does not develop automatically in a vacuum.Children who have been 17 from other human beings do not possess language.This demonstrates that 18 with other human beings isnecessary for proper language development.Some linguists believe that this is even more basic to human language 19 than any innate capacities.These theorists view language as imitative, learned behavior. 20 , children learn language from their parents by imitating them.Parents gradually shape their child's language skills by positively reinforcing precise imitations and negatively reinforcing imprecise ones.

1.A.generated B.evolved C.born D.originated

2.A.valuable B.appropriate C.convenient D.favorite

3.A.attainments B.feasibilityC.entertainments D.evolution

4.A.essential B.available C.reliable D.responsible

5.A.confirm B.inform C.claim D.convince

6.A.for B.from C.of D.with

7.A.organizations B.organisms C.humans D.children

8.A.potential B.performance C.preference D.passion

9.A.as B.just as C.like D.unlike

10.A.ideological B.biological C.social D.psychological

11.A.reviews B.reference C.reaction D.recommendation

12.A.In a word B.In a sense C.Indeed D.In other words

13.A.various B.different C.the higher D.the lower

14.A.revealed B.exposed C.engaged D.involved

15.A.regulations B.formations C.rules D.constitutions

16.A.Although B.Whether C.Since D.When

17.A.distinguished B.different C.protected D.isolated

18.A.exposition B.comparison C.contrast  D.interaction

19.A.acquisition B.appreciation C.requirement D.alternative

20.A.As a result B.After all C.In other words D.Above all

----You can’t finish the book in less than an hour, I suppose?

-----________.

　 A. Yes, I’m sure I can 　 B. No, hardly

　 C. Sorry, I can’t 　     D. I don’t think I can

I remember______this used to be a quiet village.

　 A. when 　 B. how  C. where 　 D. what

One way to understand thousands of new words is to gain _____ good knowledge of basic word formation.

　 A. / 　 B. the  C. a 　 D. one

How pleased the emperor was _____ what the cheat said!

　 A. hearing 　 B. heard  C. hear 　 D. to hear

We like the oil painting better, ______ we looked at it.

　 A. as 　 B. while  C. the moment 　 D. the more

_______ Sunday, rather than _______ at home, I preferred _______.

　 A. It being; stay; to travel 　   B. Being; to stay; to travel

　 C. shavings been; stay; travel 　 D. It was; to stay; travelling

-When are you leaving??　

-My plane _____ at six.

　 A. took off 　 B. is about to take off

　 C. takes off 　 D. will take off

He ____ me to keep away from cigarette and take more exercise.

　 A. agreed 　 B. suggested   C. promised 　 D. hoped