先天性马蹄内翻足的基本病理变化是（）。 A.足内收、内翻 B.足马蹄内翻 C.足马蹄

小王在公路上行走，速度是每小时6千米，一辆车长20米的汽车从背后驶来，并从小王身旁驶过，驶过小王身旁的时间为1.5秒，则汽车行驶的速度是______千米/小时．

Language learning begins with listening. Children are greatly different in the amount of listening they do before they start speaking, and later starters are often long listeners. Most children will “obey” spoken instructions some time before they can speak, though the word “obey” is hardly accurate as a description of the eager and delighted cooperation usually shown by the child. Before they can speak, many children will also ask questions by gesture and by making questioning noises. Any attempt to study the development from the noises babies make to their first spoken words leads to considerable difficulties. It is agreed that they enjoy making noises, and that during the first few months one or two noises sort themselves as particularly expressive as delight, pain, friendliness, and so on. But since these can’t be said to show the baby’s intention to communicate, they can hardly be regarded as early forms of language. It is agreed, too, that from about three months they play with sounds for enjoyment, and that by six months they are able to add new words to their store. This self-imitation（模仿）leads on to deliberate（有意的）imitation of sounds made or words spoken to them by other people. The problem then arises as to the point at which one can say that these imitations can be considered as speech. It is a problem we need to get out. The meaning of a word depends on what a particular person means by it in a particular situation and it is clear that what a child means by a word will change as he gains more experience of the world .Thus the use at seven months of “mama” as a greeting for his mother cannot be dismissed as a meaningless sound simply because he also uses it at other times for his father, his dog, or anything else he likes. Playful and meaningless imitation of what other people say continues after the child has begun to speak for himself, I doubt, however whether anything is gained when parents take advantage of this ability in an attempt to teach new sounds.

1．. Before children start speaking，what is greatly different?________.

A. the amount of listening     

B. a number of listening

C. the sound of listening

D. the meaning of listening

2. starters are often long listeners, the sentence means one can ________.

A. be hard to speak fluently

B. begin to speak quickly

C. start with listening

D. often take a long time in learning to listen properly

3. these can not be said to show a baby’s intention to speak, these refer to  ________.

A. pain　　 

B. happiness

C. kindness

D. above of all

4. according to the writer, we can draw a conclusion that  ________.

A. children are fond of imitating

B. these imitation can be considered as speech

C. children get more experience of the world

D. children’s use  of  words are often meaningless when a child is six months, he

5. When a child is six months, he can  ________.

A. call his mama

B. imitate many languages

C. store new words

D. play with sounds

写出国家对应的首都．

观察前，教师应让学生明确观察的（），进行有关知识的准备，并拟定详细的观察计划。只有这样，才能正确地组织学生的注意，使之指向和集中在所要观察的对象上。

改革开放以来，国务院已进行过六轮机构改革。党和国家重视机构改革的哲学依据是（）

A.辩证的否定是一事物对另一事物的否定

B.辩证的否定是对旧事物的保留

C.辩证的否定是“扬弃”

D.辩证的否定是对旧事物的克服