指出下面实例中教师的言行符合或违背什么教学原则并简要解释。一位教师教“因式分解’’这一单元时,发现学生的知识基础差别较大,于是对八位成绩好的学生提出了不同的要求,让他们到图书馆自学《因式分解及其应用》一书。经过自学,他们不但完成了规定的习题作业,而且还集体选编了几十道有代表性的习题。教师将这些习题有选择地按程度分别介绍给其他同学练习和讨论,进一步推动了全班的学习,使全班提前五课时完成了“因式分解”单元的教学任务。
Kimiyuki Suda should be a perfect customer for Japan’s car-makers. He’s a young, successful executive at an Internet-services company in Tokyo and has plenty of disposable (1) . He used to own Toyota’s Hilux Surf, a sport utility vehicle. But now he uses (2) subways and trains. " It’s not inconvenient at all," he says. (3) , "having a car is so 20th century. "Suda reflects a worrisome (4) in Japan; the automobile is losing its emotional appeal, (5) among the young, who prefer to spend their money on the latest electronic devices. (6) minicars and luxury foreign brands are still popular, everything in between is (7) . Last year sales fell 6.7 percent, 7.6 percent (8) you don’t count the mini-car market. There have been (9) one-year drops in other nations: sales in Germany fell 9 percent in 2007 (10) a tax increase. But experts say Japan is (11) in that sales have been decreasing steadily (12) time. Since 1990, early new-car sales have fallen from 7.8 million to 5.4 million units in 2007.Alarmed by this state of (13) , the Japan Automobile Manufacutures Association (JAMA) (14) a comprehensive study of the market in 2006. It found that a (15) wealth gap, demographic (人中结构) changes and (16) lack of interest in cars led Japanese to hold their (17) longer, replace their cars with smaller ones (18) give up car ownership altogether. JAMA (19) a further sales decline of 1.2 percent this year. Some experts believe that if the trend continues for much longer, further consolidation (合并) in the automotive sector is (20) . 9()
A. lower
B. slighter
C. broader
D. larger
Every year in the first week of my English class, some students inform me that writing is too hard. They never write, unless assignments (1) it. They find the writing process (2) and difficult.How awful to be able to speak in a language but not to write in it-- (3) English, with its rich vocabulary. Being able to speak but not write is like living in an (4) mansion (豪宅) and never leaving one small room. When I meet students who think they can’t write, I know as a teacher my (5) is to show them the rest of the rooms. My task is to build fluency while providing the opportunity inherent in any writing activity to (6) the moral and emotional development of my students. One great way to do this is by having students write in a journal in class every day.Writing ability is like strength training. Writing needs to be done (7) , just like exercise; just as muscles grow stronger with exercise, writing skills improve quickly with writing practice. I often see a rise in student confidence and (8) after only a few weeks of journal writing.Expressing oneself in writing is one of the most important skills I teach to strengthen the whole student. When my students practice journal writing, they are practicing for their future academic, political, and (9) lives. They build skills so that some day they might write a great novel, a piece of sorely needed legislation, or the perfect love letter. Every day that they write in their journals puts them a step (10) to fluency, eloquence (雄辩), and command of language. 8()
A. closer
B. daily
C. emotional
D. enhance
E. enormous
F. especially
G. hinder
H. mission
I. painful
J. performance
K. profession
L. remarkably
M. require
N. sensitive
O. urge
Around 120 years ago, Ebbinghaus began his study of memory. He (1) on studying how quickly the human mind can remember (2) . One result of his research is known as the total time hypothesis (假设), which simply means the amount you learn (3) on the time you spend trying to learn it. This can be taken as our first rule of learning.Although it is usually true that studying for four hours is better than studying for one, there is still the question of how we should use the four hours. For example, is it better to study for four hours (4) or to study for one hour a day for four days in a (5) The answer, as you may have (6) , is that it is better to spread out the study times. This (7) through which we can learn more (8) by dividing our practice time, is known as the distribution of practice effect. Thus, (9) .But we’re not finished yet. We haven’t considered how we should study over very short periods of time. (10) . Should you look at the same word in rapid succession, or look at the word and then have some delay before you look at it again(11) . 8()