Now You See Them - Now You Don＇t

A magician put four yellow, four green and four red fish in each of two hats. He called a volunteer from the audience, blindfolded her and asked her to take five fish from the first hat and put them in the second hat.     

How Does He Know?

An employer was very anxious to find the most intelligent of the three men who had applied for a job. So he told them: "Here are five conical hats. Three are white and two are black. I shall ask you to stand in 3 corners of the room facing the wall, and I shall place a hat on each of your heads. When you turn round, you will be able to see the other's hats but not your own. The first one to tell me the colour of his own hat will get the job." He then placed a white hat on each man's head. When the three men turned to face each other there was a long silence. Then, suddenly, one of the candidates (候选人) said, "Mine is white." How did he work out that he had a white hat on his headv     

中考链接

考点1考查...pair of...的用法[真题回放](2004河南)My parents bought me last week.A.four pair of shoesB.three piece of skatesC.five pairs of trainerD.two pairs of skates[解题点拨]选D。答案A中,pair应用复数形式;答案B中表达形式不对,滑冰鞋不能用“片”;答案C中,trainer应用复数形式。考点2考查half的用法[真题回放](2004哈尔滨)The boy always stays there for.A.one and half hourB.one and a halfC.one and a half hourD.one and a half hours[解题点拨]选D。含有half的表示一段时间的表达方式有两种,数词 名词(单复数…     

头脑风暴（英文）

AThere are three brothers,the eldest says:"I have four nephews(侄儿)and one niece(侄女)."The second says:"I have four nephews too,but Ihave two nieces."The third says:"I have four nephews as well(也),but Ihave three nieces."Do you know how many sons and daughters each of them has?B Mr.Wang buys a new pair of socks,however,there is a hole on each sock.     

头脑风暴

A There are three brothers,the eldest says:"I have four nephews (侄儿) and one niece (侄女)." The second says:"I have four nephews too,but I have two nieces." The third says:"I have four nephews as well (也),but I have three nieces." Do you know how many sons and daughters each of them has? B Mr.Wang buys a new pair of socks,however,there is a hole on each sock.But Mr.Wang is+n't angry at all.Why?     

新目标英语七年级(下)单元测试题(Units8-10)(英文)

U nit8一、词汇(10分)根据句意和所给首字母,补全空白处的单词。1.W ould you like to have a d?2.Lets see w hat is on the m today.3.W ould you like a glass oforange j?4.She often eats three t after supper.5.The tw o pairs ofshoes w ere the sam e s.6.H e has a s car because he cannot walk.7.W e can play gam es with friends in the large h.8.She eats bad m eat.That is the r why she was ill.9.Tom has two b ofrice for supper every evening.10.I don t like a d ofw ater,Id like a cup of tea.二、单项填空…     

具有小直径平面图的电力控制数

The problem of monitoring an electric power system by placing as few measurement devices in the system as possible is closely related to the well-known vertex covering and dominating set problems in graph theory. In this paper, it was shown that the power domination number of an outerplanar graph with the diameter two or a 2-connected outerplanar graph with the diameter three is precisely one. Upper bounds on the power domination number for a general planar graph with the diameter two or three were determined as an immediate consequences of results proven by Dorfling, et al. Also, an infinite family of outerplanar graphs with the diameter four having arbitrarily large power domination numbers were given.     

Topic-shift in Network Media Reports

It, from the perspective of cohesion, extracts three types of topic-shift markers used in this genre, namely ’change of narrators’, ’change of objects being talked about’, and ’temporal adverbials’ to analyze four journalistic reports from the network media and draws the conclusion that cohesion between two topic units is usually weaker than that within a specific topic fragment.     

词形转换专练(英文)

用括号内所给单词的适当形式填空。1.Y ou m ustlisten to the teacher(careful)in class.2.Id like two(kilo)of(tom ato).3.—W hatdoes your father do?—H e is a(drive).4.—Thank you very m uch.—Its a(please).5.Thank(good).The kite is not(break).6.H ow m any(knife)do you have?7.A cathas four(foot).8.W hat about(play)basketballafter school?9.There are three(box)oforanges on the bus.10.I wantsom e(bottle)ofapple juice.11.Please look at the two pictures.Can you find five(different)?12.I think the s…     

I Forget

Tom: Hey, Mike. Three girls get on a bus; two boys get on it, too. Then a girl gets off, three boys get on; a girl gets on, two boys get off; four girls get on,     

数字1到5

One, one. There is one sun.Two, two. There are two shoes.Three, three. There are three trees.Four, four. There are four doors.Five, five.There are five knives. One, two, three, four, five!     

邻里之间

One family, which had emigrated from Japan andsettled at the turn of the century near San Francisco,had established a business in which they grew rosesand trucked them into San Francisco three mornings aweek.The other family was a naturalized family fromSwitzerland who also marketed roses, and both familiesbecame modestly successful, as their roses were knownin the markets of San Francisco for their long vase-life.For almost four decades the two families wereneighbors, and the sons took ove…     

Cooperative learning as a correction and grammar revision technique： Communicative exchanges, self-correction rates and scores

This paper focuses on cooperative learning （CL） used as a correction and grammar revision technique and considers the data collected in six Italian parallel classes, three of which （sample classes） corrected mistakes and revised grammar through cooperative learning, while the other three （control classes） in a traditional way. All the classes involved in this study were in their first year of secondary school, and although most students had a level of English which was A2, they made a certain number of mistakes also in grammar topics like the present tense, which is the grammar topic under examination in this study. This paper analyses the sample students＇ communicative exchanges while they performed the error correction activity through CL, compares the self-correction rates reported by the two groups of students after the two types of correction and revision activities （traditional and through CL） and the students＇ scores in tests given to students one, four and eight weeks after the correction lessons. The aim of the study is establishing if the use of CL as a correction and grammar revision technique had a beneficial effect on the students who experienced it and in particular on the low achievers.     

脑筋急转弯(英文)

1.Y ou can see it but you can’ttouch it.It m ay disappear but has neverreally left you.It grows throughout the day.W hat is it﹖2.W hat can run but neverwalks has a m outh but nevertalks has a head but neverweeps has a bed but neversleeps﹖3.W hat two words havethe m ost letters in it﹖4.W hat is yours but isused m ore by others than byyou﹖5.H ow m any sides does ahouse have﹖6.W hat starts with T,endswith T and full of T?7.W hy should you never m arry a ten-nis player?8.W hen do elephan…     

A Number Song

请跟我一起说,请跟我一起做:One two,one two,I can do.Three four,three four,I will show.Five six,five six,I like cakes.What nice cakes!Seven eight,seven eight,How big the lake!Nine ten,nine ten,A running hen.大家跟我从一数到十:one,two,three,four,five,six,sev     

A new phenomenon of quantum-dot cellular automata

INTRODUCTION The concept of logic circuits based on quan-tum-dot cellular automata(QCA)has received much attention since it was first proposed by Lent et al.(1993)due to prospects of extremely low-power op-eration and drastic reduction of interconnections.The basic QCA building block is represented by a bistable cell made up of four quantum dots or metallic islands at the vertices of a square and containing two elec-trons that can align along two different diagonals,thus encoding two lo…     

A Comparative Study of the Jerome Model and the Horace Model

For many years,the two important translation styles,the Jerome model and the Horace model,are widely studied.Consisting of four parts,this paper will focus on making a comparison between the two translation models.     

The Analysis of Conversational Structure

1 Introduction It is not difficult to notice that there is some kind of internal structure underlying in con-versation. It is interesting to study how the internal structure of conversation is achieved inits surface structure, or in the surface form of adjacent utterances. Sacks (MS) observesthat a conversation is a string of at least two turns. Some turns are more closely related thanothers and he isolates a class of sequences of turns called adjacency pairs. However,conversa-     

智力测验（英文）

1.What 5-letter word has 6 left when you take 2 letters away?2.What’s too much for me,just right for two,but nothing at all for three?3.What question can you never answer"yes"to?4.How many sides does a house has?5.What never asks any questions but always gets answers?6.What is four feet on four feet waiting for four feet?7.What has a soft bed but never sleeps,a big mouth but never speaks?     

墙上的咖啡

I sat with my friend in a well-known coffee shop in a 1)neighboring town of Venice,Italy,the city of lights and water. As we enjoyed our coffee,a man entered and sat at an empty table beside us.He called the waiter over and placed his order,saying,"Two cups of coffee,one of them there on the wall." We heard this order with interest and 2)observed that he was served one cup of coffee but he paid for two.When he left,the waiter put a piece of paper on the wall,saying,"A Cup of Coffee." While we were still there,two other men entered and ordered three cups of coffee,two on the table and one on the wall.They had two cups of coffee but paid for three and left.This time also,the waiter did the same:He put a piece of paper on the wall,saying,"A Cup of Coffee."