Judging from the context, the word "think-tanks"（Para.2) probably means______.A．tanks that

A . A. Second Language Teaching B . B. Foreign Language Teaching C . C. Common Language Teaching D . D. Native Language Teaching

A . 正确 B . 错误

A . It removes the top label in the MPLS label stack. B . It adds a top label in MPLS label stack. C . It replaces the top label in the MPLS label stack with another value. D . It replaces the top label in the MPLS label stack with a set of labels. E . None of above.

A . displacement B . duality C . flexibility D . cultural transmissio

A . Loop Management Protocol B . Label Management Protocol C . Load Management Protocol D . Link Management Protocol E . None of above

A . A pool of physical memory that can be used by any partition B . A pool of physical processors that can be used by any virtual or dedicated partition C . A pool of physical memory that can be used by multiple Micro-Partitions D . A pool of physical processors that can be used by multiple Micro-Partitio

A．would sit in a rocking chair and enjoy his life. B．was paralyzed and stayed in a rocking chair. C．would lose his will to struggle against difficulties. D．would sit in a chair and stay at home.

A．Critical B．Negative C．Positive D．Objective

A．a newspaper B．a magazine C．the Internet D．a guidebook

A.attribute and operations B.instances of each class C.roles for each actor(device or user) D.set of collaborating classes

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, ill 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 in fact, 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 the 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 tins started late in a child who eventually turns out to be of high IQ. At twelve weeks a baby smiles and makes 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 1000 words which he can put into sentences, and at four he knows iris language differs from that of his parents in style. rather than grammar. Recent evidence suggests that an infant is born with the capacity of speaking. 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 toy-bear with the sound pattern "toy-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 on- ly the obvious signals. Sensitivity to the child's non-verbal signals is essential to the growth and development of language. The purpose of the Frederick Ⅱ's experiment was ______. A．to prove that children are bom with the ability to speak B．to discover what language a child would speak without hearing any human speech C．to find out what role careful nursing would play in teaching a child to speak D．to prove that a child would be damaged without learning a language

A．an entertainer B．an actor C．a singer D．a writer