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1.
Birds' Flight     
Why don't birds get lost on their long flights from one place to another? Scientists have puzzled over this question for many years. Now they are beginning to fill in the blanks. Not long ago, experiments showed that birds rely on the sun to guide them du…  相似文献   

2.
TELLING TIME     
It hasnt always been easy to know the time. A long time ago people looked at the sun. The sun was their clock. They could tell the time of day by the position of the sun in the sky: morning,noon,or afternoon.After many years people began to see something else about the sun.When the sun shone on something, it made a dark shadow behind it.This was the place that didn蒺t get sunlight. As the sun moved across the sky,the shadow moved too. People could tell time better by the shadows of things t…  相似文献   

3.
Crime and Drugs     
Do you know how hot thesun is? There are no solidsor liquids on the sun. Why not? The temperature onoutside the sun is more than 10, 000℃, and that at the centre is about 20, 000, 000℃.The sun is so hot that all thesolids and all the liquids havebeen turned into gases.  相似文献   

4.
English is taught throughout China. What skills will be used and how many skills will be involved depends on the materials available and the classroom situation. However, given these circumstances, a major problem that has always concerned many teachers of English is how to make full use of techniques and approaches in the classroom to teach English effectively. To an English teacher, the only way to achieve this aim is to collect good and interesting coursebooks, to adopt a communicative methodology and to integrate the four skills, i.e. listening, speaking,  相似文献   

5.
Clustering-based selective neural network ensemble   总被引:1,自引:0,他引:1  
INTRODUCTION Neural network ensemble is becoming a hot spot in machine learning and data mining recently. Many researchers have shown that simply combining the output of many neural networks can generate more accurate predictions than that of any of the individual networks. Most previous work either focused on how to combine the output of multiple trained networks or how to directly design a good set of neural networks. Theoretical and empirical work showed that a good ensemble is one wh…  相似文献   

6.
In foreign language teaching,it has always been found that there are many language learners whose second language(L2)level remains stagnant or even becomes worse no matter how hard they try.However,this may not relate to their attention given to language but to interlanguage fossilization,which results from various causes,is ubiquitous in second language acquisition(SLA)and foreign language learning.This paper,based on the empirical evidence of language learning and acquisition,probes into the nature and characteristics of interlanguage,analyzes the main causes of fossilization,and discusses pedagogical implications for avoiding fossilization in English language learning.  相似文献   

7.
王玲  王云燕 《海外英语》2012,(9):104-105
Teaching involves finding out about students’misunderstandings,intervening to change them and creating a context of learning that encourages students to engage with the subject matter.This theory of making student learning possible is very much concerned with the content of what students have to learn in relation to how it should be taught.Evaluation implies collecting information about our work,interpreting the information and making judgments about which actions we should take to improve practice.Evaluation is an analytical process that is intrinsic to good teaching.  相似文献   

8.
AFTER a relationship has ended, how many times have you found yourself wondering why either of you stayed together so long?Thanks to being able to look back on the situation, it soon becomes obvious that the relationship had gone way past its time. How much better it would be to recognize the first signs of a relationship's end, to be able to mutually acknowledge that your time together is finished?  相似文献   

9.
范宁 《海外英语》2016,(4):135+142
The paper aims to analyze the problems animal-protection faces and try to give advices about how to solve these problems. The first part will analyze that in the history of philosophical development, many philosophers make any excuse to place human above animals. The second part will make comments about how Costello makes the comparison about the poems of Rilke and Hughes about animals. The final part mainly talks about that the dilemma of the animal-rights movement and how to improve the situation.  相似文献   

10.
※ 单词拼写 ※ 1. I must a_____________ for not being able to meet you at the airport on time. 2. In order to avoid the p______________ for the wrong that he had done, he went to a European country in 1981. 3. He was too s_______________ to admit that he was wrong and refused to say sorry to his girl friend. 4. You’ve put me in a very a_____________ position and now I don’t know how to deal with the matter. 5. I am sorry that I was a____________ just now and didn’t quite catch what you sa…  相似文献   

11.
Since the early 20th century, Chinese ELT teachers and researchers have been seeking the best method for ELT. Different methods have been introduced, tried out and found unsatisfactory. In teaching practice, many have come to favor that although no single ELT method can meet all teaching and learning needs, many ELT methods have valuable insights into ELT that should be drawn on. However, teachers need a set of principles to adapt their teaching procedure to the specific circumstances. This paper, through a case teaching plan, presents how to apply varies teaching methods to design teaching plan under the guide of teaching principles.  相似文献   

12.
Many characters play their roles in Hemingway's first and most famous novel-The Sun Also Rises,they step on the stage and leave it one by one like the sunrise and sunset, obtaining nothing and leaving nothing. No matter how different they are, the result is the same for them, that is, nada, the world never changes a little for anyone, the sun is always rising in its own way. The formation and display of sut:h characters is closely related with Hemingway's own writing style , life experience and personality, the period of Lost Generation that both the characters and the author in also accounts for much.  相似文献   

13.
愚人节     
In many western countries, there is a special day every year. On that day, people would play jokes on each other without accepting am consequences (结果;影响). It is well known as the "April Fools' Day". April Fools Day is a day to play jokes on others. No one knows how the holiday be-  相似文献   

14.
A vacationing businessman was walking along a beach when he saw ayoung boy. Along the shore 1 many starfish (海星) that had been washed2 by the tide and were sure to die 3 the tide returned. The boy was4 slowly along the shore and occasionally he reached down and tossed(抛,扔) the beached 5 back into the ocean. The businessman , 6 to teach the boy a little lesson 7 common sense , walked up to the boy and said , " I have been watching 8 you are doing, son. You have a good 9 . And I know you mean well, 10 do you realize how many beaches there are 11 here and how many starfish are dying on every 12 every day . Surely such 13 industrious and kind hearted boy 14 yourself could find something better to do 15 your time. Do you really think that what you are do-  相似文献   

15.
Here is a very large moorrcake and a sharp knife.Questions :1.If you want to cut the mooricake in eight parts,how many cuts will you have to make at least?2.If you make six cuts on the mooncake,how many parts can you get at most'?  相似文献   

16.
《海外英语》2008,(2):52-54
Sports and Sportsmanship—体育和体育道德Recently I received a few letters from our readers asking about sports in America.Well,today let’s talk about some of the popular sports played here.C1osely related to playing sports is"sportsmanship".So,we’ll also touch on how sports should be played.Of course,what I’m telling you are the kinds of sports that I think interesting.There are many types of sports people play in the different parts of the world,and here I’m only going to mention a few that I think I know how to play.  相似文献   

17.
张金该 《新高考》2011,(4):53-54
For fifteen years I’ve been saying in my talks that nothing can stop the river in its journey to the great ocean. No matter how 1 the dam people built,the river will get past that dam and 2 its way to the ocean.I didn’t consider the 3 that millions of people could make a river 4.Now half of the world’s wetlands have been drained(排干),and many 5 of the animals are now gone. What’s worse,there are the pollutants that we either dump 6 that find their way into our rivers and lakes:fertilizers(肥料),silt(残渣),waste water,rubbish—the 7 is endless.I did some 8 and  相似文献   

18.
Weddings in the United States vary as much as the people do.There are church weddings with a great deal of fanfare;there are weddings on mountain-tops with guests barefooted; and there have been weddings on the ocean floor with oxygen tanks for the guests. But many weddings,no matter where or how they are performed, include certain traditional customs.  相似文献   

19.
Unit One Ⅰ. 单项填空 1. Finally, what he had done turned true. A. out B. off C. down D. up 2. Last summer I took a course on . A. how to use the computer B. how use the computer C. how using the computer D. how the computer to be used 3. My brother always dreams a famous scientist in the future. A. to become B. of becoming C. in becoming D. to becoming 4. Please give me a piece of paper . A. to write B. for writing C. to write on D. to write with 5. a matter of fact, no one can preven…  相似文献   

20.
Researchers in the United States say dust clouds from dry African deserts may be a threat to the environment and human health. They say the dust may contain many small organisms(有机体) that could be dangerous to some people. Each year, huge dust storms form in the Sahara and the Sahel deserts of northern Africa. Winds carry the dust across  相似文献   

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