So long as teachers fail to distinguish between teaching and learning, they will continue to undertake to do for children that which only children can do for themselves. Teaching children to read is not passing reading on to them. It is certainly not endless hours spent in activities about reading. Douglas insists that "reading cannot be taught directly and schools should stop trying to do the impossible." Teaching and learning are two entirely different processes. They differ in kind and function. The function of teaching is to create the conditions and the climate that will make it possible for children to devise the most efficient system for teaching themselves to read. Teaching is also a public activity: It can be seen and observed. Learning to read involves all that each individual does to make sense of the world of printed language. Almost all of it is private, for learning is an occupation of the mind, and that process is not open to public scrutiny. If teacher and learner roles are not interchangeable, what then can be done through teaching that will aid the child in the quest(探索)for knowledge Smith has one principal rule for all teaching instructions. "Make learning to read easy, which means making reading a meaningful, enjoyable and frequent experience for children." When the roles of teacher and learner are seen for what they are, and when both teacher and learner fulfill them appropriately, then much of the pressure and feeling of failure for both is eliminated. Learning to read is made easier when teachers create an environment where children are given the opportunity to solve the problem of learning to read by reading. The teaching of reading will be successful if ______.
A. teachers can improve conditions at school for the students
B. teachers can enable students to develop their own way of reading
C. teachers can devise the most efficient system for reading
D. teachers can make their teaching activities observable
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一个栈的入栈序列A,B,C,则栈的不可能的输出序列是 (37) 。
ABC
B. ACB
C. BAC
D. CAB
为了提高测试效率,应该 (51) 。
A. 随机地选取测试数据
B. 取一切可能的数据作为测试数据
C. 在完成全部编码以后开始软件的测试
D. 选择错误可能性大的数据作为测试数据
案例分析题数据结构被形式地定义为(K,R),其中K是()的有限集合,R是K上()的有限集合。 数据结构被形式地定义为(K,R),其中K是()的有限集合。
A. 算法
B. 数据元素
C. 数据操作
D. 逻辑结构
Some pessimistic experts feel that the automobile is bound to fall into disuse. They see a day in the not-mo-distant future when all autos will be abandoned and allowed to rust. Other authorities, however, think the auto is here to stay. They hold that the car will remain a leading means of travel in the foreseeable future. The motorcar will undoubtedly change significantly over the next 30 years. It should become smaller, safer, and more economical, and should not be powered by the gasoline engine. The car of the future should be far more pollution-free than present types. Regardless of its power source, the auto in the future will still be the main problem in urban traffic congestion (拥挤). One proposed solution to this problem is the automated highway system. When the auto enters the highway system, a retractable (可伸缩的) arm will drop from the auto and make contact with a rail, which is similar to those powering subway trains electrically. Once attached to the rail, the car will become electrically powered from the system, and control of the vehicle will pass to a central computer. The computer will then monitor all of the car’s movements. The driver will use a telephone to dial instructions about his destination into the system. The computer will calculate the best route, and reserve space for the car all the way to the correct exit from the highway. The driver will then be free to relax and wak for the buzzer (蜂鸣器) that will warn of his coming exit. It is estimated that an automated highway will be able to handle 10,000 vehicles per hour, compared with the 1,400 to 2,000 vehicles that can be carried by a present-day highway. In an automated highway system, all the driver needs to do is ______.
A. keep in the right lane
B. wait to arrive at his destination
C. keep in constant touch with the computer center
D. inform the system of his destination by phone