首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 15 毫秒
1.
The way of teaching in the early stages has been the question of discussion for years. Here I will limit myself to five points: (1) to help the students form good habits of learning; (2) to teach the students the perfection of the English sound system; (3) to help the students form good habits of reading; (4) to teach grammar in speech, not by constructing sentences according to rules; (5) to reduce to a minimum the use of translation by the learning of vocabulary. My aim is to put the question for further discussion.  相似文献   

2.
One evening two young men were walkingin the street together.They tried to find a chance(机会)to steal(偷)something.The clock struck(敲打)twelve.Most of the people went to bed.Quicklythey came to a house and it seemed that everyonein the house had fallen asleep.Standing at the front  相似文献   

3.
Choose the right answers for the blanks.1. (1985)-There's a hole in your bag. -I know. I am going to have itA. mend B. mending C. mended D. to be mended2. (1986)He had his leg in the match yesterday.A. to break B. broken C. break D. breaking3. (1987)Most of the people to the party were famous scientists.A. invited B. to invite C. being invited D. inviting  相似文献   

4.
1.表示“回复,反应”意思的词,如: answer to question(问题答案)He made no answer to my question. solution to the problem(问题的解决办法)Please find the solution to the problem response to the inquiry(对调查的回答) response to the reaction (对建议的反应) reply to the letter(对信的回复) 2.表示“出口、入口或与建筑物有关”的词汇,如: entry to the inner palace进入内宫  相似文献   

5.
成长的季节     
In New England.you don't need a calendar to knowit's the first week of October.The trees tell the storyquite well as their leaves change from shades ofgreen to the bright vibrant(充满活力的)shades of or-ange,red and yellow.At the peak of the fall foliage(树叶,植物)season, it's truly a magnificent sight that drawspeople from all around to behold(看)the beauty.Theseason progresses and the Ieaves fall to the ground one byone where they become nourishment(食物,营养品)for thegrass,flowers and gardens in the spring.As I spent Sunday Collecting some of the fallen leaveswith my 7-year-old daughter,I wondered what wouldhappen if a tree stubbornly(倔强地.顽固地)held onto to itsleaves-refusing to let them fall to ground and nourish thenew season that awaits only a few months from now.Howwould that tree be affected?How would the rest of life beaffected?  相似文献   

6.
Teaching Aims1.to help the students to review the structure:as...as,not so(as) ...as2 .to help the students to learn the phrases:a-gree with...,prefer...to...3.to help the students to master the“more...than.../ less...than...”structureTeaching Procedures .Revision(as...as,not so(as) ...as)1.Begin the class in a nature way:Teacher:Glad to see you again,my dear boysand girls!I'm very happy today,guess why.Student A:Your husband bought a beautifulcoat for you.Teacher:Of course I hope so.Bu…  相似文献   

7.
It happened about one hundred years ago.Mr Gaul,a____artist(画家),drew very well and the people in thesmall country____him.He often helped the poor but____the men who were had to the people.So the peopleliked him too. Once the king wanted Mr Gaul to draw a portrait(画像)for his____.He said to him,"You're the____artist in our country.I'm sure you're able to do it.Workhard,and I____you much." Of course the artist knew it was____for him torefuse(拒绝)and began to work.A few days later he____his work and gave the portrait to the king.____  相似文献   

8.
Watching TV     
Boys and girls love to watch TV.Some childrenspend(花费)six hours a day in school andfour to six hours a day in front of the TV set.Somechildren even(甚至) watch TV for eight or more hourson Saturday.TV programmes are like books and films.A child canlearn bad things from some of them and good things from theothers.Some programmes (节目)help the children to knowthe news from the other parts of the world.Some programmes showpeople and places from other countries or other times in history.With TV,a child doesn't need to go to the zoo to see animals(动物)or to  相似文献   

9.
1. (MET 1987) Most of the people to the party were famous scientists . A. invited B. to invite C. being invited D. inviting2.(MET 1990) Most of the artists to the party were from SouthAfrica.A. invited B. to inviteC. being invited D. had been invited3. (NMET 1994) The first textbooks for teaching English as a foreignlanguage came out in the 16th century.A. having written B. to be written C. being written D. written  相似文献   

10.
Ⅰ.用所给动词的适当形式填空。1.I____(take)a walk in the park yesterday.2.The sun____(rise)in the east and____(set)in the west.3.There____(be)a concert this afternoon.Can you get two tickets forus?4.I____(not see)Peter yesterday.I think he____(go)to Beijing.5.How many English words____you____(learn)last year?6.The boys____(write)a letter to their mother tomorrow.7.They____(come)to the town two years ago.8.It____(rain)tomorrow.9.They____(read)an English book now.10.Her friend____(go)to the …  相似文献   

11.
Scrubbing of NOx from the gas phase with Fe(Ⅱ)EDTA has been shown to be highly effective. A new biological method can be used to convert NO to N2 and regenerate the chelating agent Fe(Ⅱ)EDTA for continuous NO absorption. The core of this biological regeneration is how to effectively simultaneous reduce Fe(Ⅲ)EDTA and Fe(Ⅱ)EDTA-NO, two mainly products in the ferrous chelate absorption solution. The biological reduction rate of Fe(Ⅲ)EDTA plays a main role for the NOx removal efficiency. In this paper, a bacterial strain identified as Klebsiella Trevisan sp. was used to demonstrate an inhibition of Fe(Ⅲ)EDTA reduction in the presence of Fe(Ⅱ)EDTA-NO. The competitive inhibition experiments indicted that Fe(Ⅱ)EDTA-NO inhibited not only the growth rate of the iron-reduction bacterial strain but also the Fe(Ⅲ)EDTA reduction rate. Cell growth rate and Fe(Ⅲ)EDTA reduction rate decreased with increasing Fe(Ⅱ)EDTA-NO concentration in the solution.  相似文献   

12.
Language points:1.Are you sure that your answer to question one is right?What makes you think that the person in the picture is feeling(in)a certain way. the answer to/the key to/the solution to/the expla- nation to/the approach to/the access to  相似文献   

13.
Scrubbing of NOx from the gas phase with Fe(Ⅱ)EDTA has been shown to be highly effective. A new biological method can be used to convert NO to N2 and regenerate the chelating agent Fe(Ⅱ)EDTA for continuous NO absorption. The core of this biological regeneration is how to effectively simultaneous reduce Fe(Ⅲ)EDTA and Fe(Ⅱ)EDTA-NO, two mainly products in the ferrous chelate absorption solution. The biological reduction rate of Fe(Ⅲ)EDTA plays a main role for the NOx removal efficiency. In this paper, a bacterial strain identified as Klebsiella Trevisan sp. was used to demonstrate an inhibition of Fe(Ⅲ)EDTA reduction in the presence of Fe(Ⅱ)EDTA-NO. The competitive inhibition experiments indicted that Fe(Ⅱ)EDTA-NO inhibited not only the growth rate of the iron-reduction bacterial strain but also the Fe(Ⅲ)EDTA reduction rate. Cell growth rate and Fe(Ⅲ)EDTA reduction rate decreased with increasing Fe(Ⅱ)EDTA-NO concentration in the solution.  相似文献   

14.
筷子的故事     
China was the first country in the world to use chopsticks and has ahistory(历史) of more than(超过) 3,000 years eating meals with chopsticks. Chinese people usually usebamboo(竹子) orwood(木头) to make chopsticks. And it wascommon(普遍的) for rich people to use silver or gold chopsticks in the old days.  相似文献   

15.
In this paper, a new illumination system with ultra high performance (UHP) lamp is proposed for projection display. Parabolic reflector (PR) and compound parabolic retro-reflector (CPR) were jointly used to collect and collimate the light generated from UHP lamp. A polarization converter system (PCS) was used to increase the light efficiency of the projection display system. A beam transformer between PCS and 2f imaging systems was directly used to make the illumination meet the requirement of projection display system. With the consideration of the loss of reflection, the light efficiency in this projection display system was estimated to be 15.6%.  相似文献   

16.
Objectives:Severe acute pancreatitis(SAP) can lead to acute lung injury(ALI) .The purpose of this paper is to investigate the protective effect of clodronate-containing liposomes on ALI in rats with SAP.Methods:The thin film method was used to prepare liposomes.Sprague-Dawley rats were randomly divided into three groups.After the SAP model was established by injecting 5%(w/v) sodium taurocholate(2 ml/kg body weight) into the subcapsular space of the pancreata,normal saline was administered to the control(C) group,phosphate buffer solution(PBS) -containing liposome to the Pgroup,and clodronate-containing liposome to the Tgroup through tail veins.Blood samples were obtained from the superior mesenteric vein at 2 and 6 h to measure the levels of amylase,interleukin-6(IL-6) ,and tumor necrosis factor-α(TNF-α) .Morphological changes in the pancreata and lung were observed using hematoxylin and eosin(HE) staining,while cell apoptosis was detected using terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling(TUNEL) .In addition,the macrophage marker cluster of differentiation 68(CD68) in lung tissue was detected with immunohistochemistry.Results:Blood levels of amylase,IL-6,and TNF-αwere significantly increased in the Pgroup compared to those in the Tgroup(P0.05) .In the Tgroup,large numbers of TUNEL-positive cells were observed,but no or few in the C and Pgroups.Gross inspection and HE staining of pancreata and lung showed dramatic tissue damage,including inflammation and necrosis in the Pgroup.Less remarkable changes were noted in the Tgroup,and the C group exhibited normal histology.The histological scores according to Kaiser's criteria were consistent with HE findings.The number of CD68-positive macrophages decreased in the Tgroup.Conclusions:Clodronate-containing liposomes have a protective effect against ALI in rats with SAP.Blockade of macrophages may represent a novel therapeutic strategy in SAP.  相似文献   

17.
This paper presents an effective and efficient combination of feature extraction and multi-class classifier for motion classification by analyzing the surface electromyografic(sEMG) signals. In contrast to the existing methods,considering the non-stationary and nonlinear characteristics of EMG signals,to get the more separable feature set,we introduce the empirical mode decomposition(EMD) to decompose the original EMG signals into several intrinsic mode functions(IMFs) and then compute the coefficients of autoregressive models of each IMF to form the feature set. Based on the least squares support vector machines(LS-SVMs) ,the multi-class classifier is designed and constructed to classify various motions. The results of contrastive experiments showed that the accuracy of motion recognition is improved with the described classification scheme. Furthermore,compared with other classifiers using different features,the excellent performance indicated the potential of the SVM techniques embedding the EMD-AR kernel in motion classification.  相似文献   

18.
1.单词拼写根据句意和汉语注释,写出句中所缺单词的完整形式。1.The town was hit bya_(咫风),in whieh 100 people drowned and more were missing·2.After the earih明ake,hundreds of people were_(埋)under the ruins. 3.It took real_(勇气)to 90 baek to reseue the ehild trapped in theb咖ing building. 4.When the hunterfi玲d the gun,the tiger turned and_(逃走). 5.Driversare_(催促)to take Care on iey roads. 6 .1 ean tell you the seeret plan,but will you _(发誓)not to tell anyone else? 7.The volcano_(喷…  相似文献   

19.
Instructions:Use the letters after the clues (information that helps you to find the answers) below to make words used to describe people.Then use the letters in the yellow boxes to make another word that describes someone.  相似文献   

20.
Robert De Vincenzo, the great Argentine(阿根廷) golfer, once won a tournament competition(联赛) and, after receiving the cheek and smiling for the cameras, he went to the club-house and prepared to leave. Some time later, he walked alone to his car in the parking lot(停车场) and was approached by ayoung woman.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号