8个月小儿可以添加（） A.水果汁 B.米汤 C.肝泥 D.碎肉 E.软饭

下面（）是轿厢所属构件。

A.曳引钢丝绳

B.电缆支架

C.层门地坎

D.导靴

有一身高为H的田径运动员正在进行100 m的国际比赛，在终点处，有一站在跑道旁边的摄影记者用照相机给他拍摄冲线瞬间，摄影记者使用的照相机的光圈（控制进光量的多少）是16，快门（曝光时间）是，得到照片后测得底片高度为h，胸前号码布上模糊部分的宽度是．由以上数据可以知道运动员的（  ）

A．100 m成绩

B．冲线速度

C．100 m内的平均速度

D．100 m比赛过程中发生的位移大小

角化的鳞状上皮分层不包括的是（）

A.基底层

B.棘层

C.固有层

D.角化层

E.粒层

实行销售代理必须签订委托合同，委托合同需要载明（）。

A.委托期限

B.房屋的产权登记

C.被委托人的权利、义务

D.房屋的基本情况

E.《城市商品房预售管理办法》

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