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单选题Is language, like food, a basic human need? Judging from the result of the violent experiment by a German King, Frederick II, in the 13th 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(婴儿) died before the first year. But clearly there was more than language deprivation(剥夺) 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 much violent deprivation exists as that by Frederick II. Nevertheless, some children are still backward in speaking. Most often the reason for this is that the mother is insensitive(不敏感的，迟钝的) to the signals of the infant, whose brain is programmed to map up language rapidly. There are critical times, it seems, when children learn more readily. If these sensitive periods are neglected, the ideal time for acquiring language skills passes and they might never be learned so easily again. Linguists(语言学家)suggest that speech stages are reached in a fixed sequence(顺序) 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. 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(玩具熊)with the sound pattern "teddy-bear"。 But speech has to be stimulated(刺激), and this depends on interaction between the mother and the child, where the mother recognizes the signals in the child"s babbling(牙牙学语), 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 signals is essential to the growth and development language.

单选题In this letter, ABC Company is promoting ______. A) telephone recorders C) exclusive products B) telephone facilities D) mobile telephones

单选题A man escaped from the prison last week. It was a long time ______ the guards discovered what had happened. A. since B. before C. when D. until

单选题Don't ______ your work half-done. You are supposed to finish it alone.

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单选题Our online computer repair and tech support is a convenient way to have your computer ______ without having to leave your home.

单选题In every language, there are two great classes of words which, taken together, consist of the whole vocabulary. First, there are those words with which we become acquainted in daily conversation, which we learn, that is to say, from the members of our own family and from our familiar associates, and which we should know and use even if we could not read or write. They concern the common things of life, and all the goods in trade of all those who speak the language.Such words may be called "popular", since they belong to the whole people and are not the exclusive possession of a limited class. On the other hand, our language includes a large number of words which are comparatively seldom used in ordinary conversation. Their meanings are known to every educated person, but there is little occasion to use them at home or in the market place. Our first acquaintance with them comes not from our mother's lips or from the talk of our schoolmates, but from books that we read, lectures that we hear, or the more formal conversation of highly educated speakers who are discussing some particular topic in a style raised above the habitual level of everyday life. Such words are called "learned". And the distinction between them and "popular" words is of great importance to a right understanding of the language.

单选题When the author mentions the Indian fakir, he shows that ______.

单选题Many a boy ______ playing football.

单选题______ you keep on practicing English, you can use it freely one day.

单选题A.Mr.Smith.B.MissWhite.C.MissSmith.D.Mr.Brown.

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单选题She has made it clear ______ she will not take part in parties of any kind recently.A. ifB. thatC. althoughD. while

单选题I saw a lot of children playing in the garden, most of them______girls.A) areB) wereC) beingD) have beern

单选题With the help of science and technology, the farmers produced ______ crops in 1994o as the year before.

单选题I told him about how to get here but perhaps I ______ him a map.

单选题It would have taken hours to work the sum out, so he ______ his pocket calculator. A. turned out B. turned to C. turned up D. turned off

单选题If you wish to apply for a student visa, you should fill in Form IM2A which you can get free of charge from the nearest British mission (领事馆) offering a visa service. You can only apply at the British mission in the country where you are living. Where there is none in the country concerned, or it does not offer a full service, another British mission will have been designated (指定) to handle applications.