Smoking heavily at home will expose children to______ amount

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[单选题]Smoking heavily at home will expose children to______ amount of smoke,endangering their health.

A. multiple
B. surplus
C. durable
D. excessive

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学习资料：

[单选题]儿童在熟悉了"白菜""菠菜""韭菜"等概念之后，再学习"蔬菜"这一概念，属于( )。

A. 下位学习
B. 相关类属
C. 派生类属
D. 上位学习

[单选题]在中国浩瀚的史学著作中，有两本史书如同突兀的双峰，并峙于历史峻岭之中，被誉为"史学双壁"，它们分别是( )。

A. 《汉书》《史记》
B. 《史记》《资治通鉴》
C. 《后汉书》《资治通鉴》
D. 《汉书》《后汉书》

[单选题]为了解决名词与术语脱离事物、抽象概念脱离具体形象、理解脱离感知等矛盾，教师在教学时应该注意贯彻( )。

A. 直观性原则
B. 理论联系实际原则
C. 巩固性原则
D. 启发性原则

[单选题]小强今年13岁，在暑假时不慎摔伤，致使腿部残疾，但仍具有接受普通教育的能力。当小强准备入学时，当地普通学校以小强的腿有残疾为由，拒绝其人校学习。学校的做法( )。

A. 合法，学校有招生自主权
B. 合法，学校有办学自主权
C. 不合法，违反了《中华人民共和国义务教育法》
D. 不合法，违反了《中华人民共和国教育法》

[多选题]焦虑不利于学生的学习。

A. 这种说法是错误的。焦虑指学生担心不能完成任务时产生的不舒适、紧张和担忧的感觉，焦虑程度影响着学习动机和学业成绩。大量研究表明，中等程度的焦虑对学习是有益的，焦虑程度过低或过高都会对学习产生不良影响。焦虑程度过低则学习动力不足，焦虑程度过高则会导致神经过度紧张、生理节律紊乱、失眠，甚至产生恐惧等不良反应，从而给学习带来不良影响。故题干的说法是错误的。

[单选题] Is language, like food, a basic human need without which a child at a critical period of life can be starved and damaged? Judging from the drastic experiment of Frederick in the thirteenth century, it may be. Hoping to discover what language a child would speak if he heard no mother tongue, he told the nurses to keep silent. All the infants died before the first year. But clearly there was more than lack of language here. What was missing was good mothering. Without good mothering, in the first year of life especially, the capacity to survive is seriously affected. Today no such severe lack exists as that ordered by Frederick. Nevertheless, some children are still backward in speaking. Most often the reason for this is that the mother is insensitive to the signals of the infant, whose brain is programmed to learn language rapidly. 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 right time, but the process is slow and hard once the critical stage has passed. Experts suggest that speech stages 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 tums out to be of high IQ. At twelve weeks a baby smiles and utters vowel-like sounds; at twelve months he can speak simple words and understand simple commands; at eighteen months he has a vocabulary of three to fifty words. At three he knows about 1,000 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 of 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 is the young brain's ability to pick out an order in language from the mixture of'sound around him, to analyze, to combine and recombine the parts of a language in new ways. But speech has to be induced, and this depends on interaction between the mother and the child, where the mother recognizes the signals in the child's babbling, grasping and 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 signals is essential to the growth and development of language.

The reason that some children are backward in speaking is most likely that ________.

A. they are incapable of learning language rapidly
B. they are exposed to too much language at once
C. their mothers respond inadequately to their attempts to speak
D. their mothers are not intelligent enough to help them

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