Once a class does not need to move at_________pace, students can learn different thing

Once environmental damage __________, it takes many years for the system to recover.

A) has done B) is to do C) does D) is done

her is insensitive to the cues and signals of the infant, whose brain is programmed to mop up(吸收) language rapidly. There are critical times, it seems, when children learn more readily. If these sensitive periods are neglected, the ideal time for acquiring skills passes and they might never be learned so easily again. A bird learns to sing and to fly rapidly at the right time, but the process is slow and hard once the critical stage has passed.Linguists suggest that speech milestones are reached in a fixed sequence and at a constant age, but there are cases where speech has started late in a child who eventually turns out to be of high IQ (Intelligence Quotient(智商. At twelve weeks a baby smiles and utters vowel-like sounds; at twelve months he can speak simple words and under- stand simple commands; at eighteen months he has a vocabulary of thirty to fifty words. At three he knows about 1000 words which he can put into sentences, and at four his language differs from that of his parents in style. rather than grammar.Recent evidence suggests that an infant is born with the capacity to speak. What is special about man's brain, compared with that for the monkey, is the complex system which enables a child to connect the sight and feel of, say, a teddy-bear with the sound pattern "teddy-bear". And even more incredible(不可思议) is the young brain's ability to pick out an order in language from the hubbub(喧哗) of sound around him, to analyse, to combine and recombine the parts of a language in novel ways.But speech has to be triggered(触发), and this depends on interaction between the mother and the child, where the mother recognizes the cues and signals in the child's babbling, (咿咿呀呀) clinging, grasping, crying, smiling, and responds to them. Insensitivity of the mother to these signals dulls the interaction because the child gets discouraged and sends out only the obvious signals. Sensitivity to the child's non-verbal cues is essential to the growth and development of language.

1.The reason some children are backward in speaking today is that ____.

A、they do not listen carefully to their mothers

B、their brains have to absorb too much language at once

C、their mothers do not respond to their attempts to speak

D、their mothers are not intelligent enough to help them

2.By "critical times" the author means ____.

A、difficult periods in the child's life

B、moments when the child becomes critical towards its mother

C、important stages in the child's development

D、times when mothers often neglect their children

3.Which of the following is NOT implied in the passage____.

A、The faculty of speech is inborn in man.

B、Children do not need to be encouraged to speak.

C、The child's brain is highly selective.

D、Most children learn their language in definite stages.

4.It the mother does not respond to her child's signals ____.

A、the child will never be able to speak properly

B、the child will stop giving out signals

C、the child will invent a language of its own

D、the child will make little effort to speak

5.Which of the following is true according to the passage____.

A、By the age of a year and a half the child's vocabulary is still under 100 words.

B、By the age of four children still make many grammatical mistakes.

C、The author does not believe that children select and analyse their language.

D、All children of high IQ start to speak early.

and that race believes certain things and so on. Yet, the __41__ phenomenon of race consists of a few surface indications.

We judge race usually __42__ the coloring of the skin: a white race, a brown race, a yellow race and a black race. But __43__ you were to remove the skin you could not __44__ anything about the race to which the individual belonged. There is __45__ in physical structure. The brain or the internal organs to __46__ a difference.

There are four types of blood. __47__ types are found in every race, and n o type is distinct to any race. Human brains are the __48__. No scientists could examine a brain and told you the race to which the individual belonged. Brains will __49__ in size, but this occurs within every race. __50__ does size have anything to do with intelligence. The largest brain __51__ examined belonged to a person of weak __52__. On the other hand, some of our most distinguished people have had __53__ brains.

Mental tests which are reasonably __54__ show no differences in intelligence between races. High and low test results both can be recorded by different members of any race. __55__ equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.

Individuals of every race __56__ civilization to go backward or forward. Training and education can change the response of a group of people, __57__ enable them to behave in a __58__ way.

The behavior. and ideas of people change according to circumstances, but they can always go back or go on to something new __59__ is better and higher than anything __60__ the past.

41. a. complete b. full c. total d. whole

42. a. in b. from c. at d. on

43. a. since b. if c. as d. while

44. a. speak b. talk c. tell d. mention

45. a. something b. everything

c. nothing d. anything

46. a. display b. indicate c. demonstrate d. appear

47. a. All b. Most c. No d. Some

48. a. same b. identical c. similar d. alike

49. a. remain b. increase c. decrease d. vary

50. a. Only b. Or c. Nor d. So

51. a. ever b. then c. never d. once

52. a. health b. body c. mind d. thought

53. a. big b. small c. minor d. major

54. a. true b. exact c. certain d. accurate

55. a. Provided b. Concerning

c. Given d. Following

56. a. make b. cause c. move d. turn

57. a. and b. but c. though d. so

58. a. ordinary b. peculiar c. usual d. common

59. a. that b. what c. whichever d. whatever

60. a. for b. to c. within d. in

A.where

B.that

C.it which

D.which

A.Once

B.Though

C.Until

D.Unless

A.inquired

B.required

C.requested

D.demanded

A.is

B.was

C.are

D.were

A.Square,triangle and oval

B.High,low and deep

C.hundred,thousand and million

D.Class 1,Class II and Class II