骨转移癌病人血钙浓度增高原因为（） A.长期卧床缺钙 B.病理骨折可释放钙 C.低蛋

It is, everyone agrees, a huge task that the child performs when he learns to speak, and the fact that he does so in so short a period of time challenges explanation.

Language learning begins with listening. Individual children vary greatly in the amount of listening they do before they start speaking and late starters are often long listeners. Most children will “obey” spoken instructions some time before they can speak, though the word obey is hardly accurate (精确) as a description of the eager and happy cooperation usually shown by the child. Before they can speak, many children will also ask questions by gestures and by making questioning noises.

Any attempt to trace (探察) 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 out to show joy, sadness, and so on. But since these cannot 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 sounds. This self-imitation (自我模仿) leads on to 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 a speech.

1．The third paragraph is mainly about ____

A．the development of babies’ early forms of language

B．the difficulties of babies in learning to speak

C．babies’ strong desire to communicate

D．babies’ intention to communicate

2．The author’s purpose in writing the second paragraph is to show that children ____.

A．usually obey without asking questions

B．are not active in the process of learning to speak

C．are born cooperative

D．learn to speak by listening

3．From the passage we learn that ____.

A．early starters can learn to speak within only six months

B．children show a strong desire to communicate by making noises

C．imitation plays an important role in learning to speak

D．children have various difficulties in learning to speak

4．The best title for this passage would be ____.

A．How Babies Learn to Speak    B．Early Forms of Language

C．A Huge Task for Children       D．Noise Making and Language Learning

上述哪一种有机磷中毒忌用碳酸氢钠溶液洗胃

A．甲胺磷
B．乐果
C．敌百虫
D．对硫磷

手机动漫游戏业务如何计费？

某市一工厂位于市区内，因生产不景气，经总公司批准，同意改建一座高层宾馆。占地面积32000m²，总公司在批准时指出市委、市规划行政主管部门根据规划，经研究并口头同意该厂用地使用性质可以调整。随后该厂便与合作方签订协议，由合作方出资建成以后各得一半的建筑面积，合作双方的建设方案报经总公司批准后，即着手进行建设。正当开始施工时，城市规划行政主管部门查处了该工程建设，责令立即停工，听后处理。
该工程为什么会受到城市规划行政主管部门的查处城市规划主管部门应如何处置

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