有效评价 优化课堂——深圳朗文版《小学英语》Book 5 Unit 4 Fun with Shapes

教学步骤及说明 Step 1. Warming-up Let＇ s chant： Hop a little. Jump a little. One.Two. Three. Run a little. Skip a little. Tap oneknee. Bend a little. Stretch a little. Nod yourhead. Yawn a little. Sleep a little, in your bed!     

慧眼巧辨"四胞胎"

请同学们看南京市2001年中考试卷第30题: I bought__exercise-bookswith____mnoney. A.a few,a few B.a few,a little C.a little,a few D.a little,a little     

中考冠词专项精练(英文)

1.This is song I’ve told you about.Isn’t it beautiful one?A.the;the B.a;aC.the;a D.a;the2.There is book on the desk.It is interesting book.A.a;a B.a;theC.a;an D.the;the3.Jim likes to play football and w as on school team.A./;theB./;/C.the;the D.a;a4.This m orning I had egg and a bottleof m ilk for m y breakfast.A.anB.a C.the D./5.—W hat’s the m atter with you?—I caught bad cold and had to stay in bed.A.a;/B.a;the C.a;a D.the;the6.sun is bigger than earth.A.A;the B.A;anC.The;a…     

列代数式要“咬文嚼字”

列代数式时,一定要注意题目中的语言叙述,如果错误地理解题目的意思,就会列错.所以一定要对题目“咬文嚼字”,做到不出差错,请看下面的例子.a与b两数的平方和:a2+b2.a与b两数和的平方:(a+b)2.a与b的平方和:a+b2.a与b两数的立方和:a3+b3.a与b两数和的立方:(a+b)3.a与b的立方和:a+b3.a与b两数的倒数和:1a+1b.a与b两数和的倒数:1a+b.a与b的倒数和:a+1b.a与b两数的倒数的绝对值的和:1a+1b.a与b两数的和的倒数的绝对值:1a+b.a与b两数和的绝对值的倒数:1a+b.a与b两数和的绝对值:a+b.a与b两数绝对值的和:a+b.a与b的绝对值的和:a+b.列代数式要“咬文…     

看图选择

羁圈选舞正粥答絮: 1.It’S sunny outside. WOuldlike . A.a pair of gloves B.a pair of sunglasses C.a pair of shoes 2.This boy is very cok He WOuld like . A.a nice T—sIIirt B.a hat C.a coat 3.The酉rl is verhungry.She would like———————一.A.abottle ofmilkB.a bag of potatoesC.a box of cakes 4.The boy is thirsty.He would lik一●}A.a cup ofteaB.a bowl of riceC.a box of chocolate26看图选择@刘晓丹…     

Letters and Animals(Ⅲ)

O is an ox,strong and slowP is a panda,fat and lovely.Q is a quail,a bird that can't fly.R is a rabbit,small and white.S is a snail with a house on its back.T is a tuna,delicious to eat.U is a unicorn,a horse with a horn.V is a vulture,dark and terrible.W…     

有效评价 优化课堂———深圳朗文版《小学英语》Book 5 Unit 4 Fun with Shapes

教学步骤及说明Step1.W arm ing-upLet's chant:H op a little.Jum p a little.One.Two.Three.Run a little.Skip a little.Tap oneknee.Bend a little.Stretch a little.Nod yourhead.Yawn a little.Sleep a little,in yourbed。设计意图:学生跟着《节拍英语》中的H op alittl     

标点符号的妙用

标点符号在文章中起着连接句子、区分句意的作用。请仔细阅读下面的句子看看有无标点符号意义会产生什么区别,把句子翻译过来。1.a.Tomsays the teacher is a sillydonkey.b.Tom,says the teacher,is a silly don-key.2.a.Did he goover his lessons,then?b.Did he goover his lessons then?3.a.What a girlb.What?a girl?4.a.Doyou knowher father?b.Doyou knowher,father?5.a.He is a short storywriter.b.He is a short-storywriter.6.a.There were,too,manychildren there.b.There were toomanychildren there.7.a.I didn’t go t…     

《数列》单元测试题

一、选择题(每小题5分)1.等差数列{an}中,已知a1≠0,S10=4S5,则适合an=9a1的n值是()A.2B.3C.4D.52.在等比数列{an}中,已知a1=1,公比q∈R,且q≠1,an=a1·a2……a10,则n等于()A.44B.45C.46D.473.首项为81,公差为-7的等差数列{an}中,与0最接近的项是()A.a11B.a12C.a13D.无法确定4.{an}为等比数列,且S3=3a3,则公比q值为()A.-12B.12C.1或-12D.-1或125.已知数列{an}是等差数列,a1+a2+a3=15,an+an-1+an-2=78,其前n项和Sn=155,则n=()A.15B.12C.10D.86.在等比数列{an}中,a1+a2+…+a5=3,a6+a7+…+a10=9,则a11+a12+…+a15=()A.27B.36C.40D.…     

高考数学专题复习样卷(一)——数列

一、选择题(本大题共12小题,每小题5分,共60分,在每小题给出的四个选项中,只有一项是符合题目要线求的.)1.已知数列{an}满足an 2 an=2an 1,且a7 a9=16,a4=1,则a12的值为()A.15B.30C.31D.642.等比数列{an}中,a1=1,a10=3,则a1·a2·…·a10等于()A.35B.3253C.323D.373.已知等差数列{an}的前n项和为Sn,若S101=0,则有()A.a1 a101>0B.a2 a100<0C.a3 a99=0D.a51=51     

二次根式运算“误”中悟

初学二次根式,不少同学易犯这样或那样的错误.现举例予以剖析,希望同学们领悟错误的原因,彻底告别错解. 一、忽视整体性 例1化简:a÷a√1/a. 错解:原式=a÷a·√a/a＝√a/a.. 剖析:这里的除数应是a√1/a(一个整体). 正解:原式=a÷(a·√a/a)＝a÷√a＝√a.     

冠词考点训练台

【点击考点】 冠词中考热点侧重在不定冠词a(an)的区分;定冠词the的用法;不用冠词场合的考查。 l专题训练l 工.中考选粹1 .This 15—一emPty bottle.Could you give me full one? A.a,a B.an,a C.rhe,the D./,a(2002济南)2 .Mike 15—American boy.He studies In—university in Lanzhou. A.the,a B.a,a C.an,a D.an,an(2002甘肃)3.一Wherels mathsteacher? 一He’stalking with Sam’5 father. A.a B.an C.the D./(2002福州)4.Greens are on visit to a beautifulcity in China. A./,a B.A,the C.The,a D.The,/(加02吉林)5 .…     

On Weekend

Peter and Barbara Hayes went to a French restaurant last weekend.Peter had a steak with a baked potato and carrots.Barbara had a boiledlobster with a baked potato and peas.They both had a French saladand French bread,and they drank a bottle of French wine.Peter order-ed cake for dessert,and Barbara ordered cheese.Then they went to a French movie.There is a movie theater near     

从“a”入手 化简求值

二次根式 a中的 a具有非负性 ,灵活运用这一属性能够巧妙地解决二次根式的计算求值等问题 .现列举实例 ,进行介绍 .一、化简例 1　化简 - a3 - a2 - 1a =.解 :由 - a3≥ 0 ,且 a≠ 0知 :a <0 ,∴原式 =- a - a + a - a =0 .二、计算例 2　计算 a 16 a + 3a3 - 12 a2 4a.解 :由 a3 ≥ 0且 a≠ 0知 :a >0 ,∴原式 =4 a a + 3a a - a a=6 a a .例 3　计算 2 0 0 1- a + a - 2 0 0 1+2 0 0 1a + a2 0 0 1.解 :由 2 0 0 1- a≥ 0 ,且 a - 2 0 0 1≥ 0 ,知 :a =2 0 0 1,当 a =2 0 0 1时 ,原式 =2 0 0 1+ 1=2 0 0 2 .三、求值例 4　已知实数 a满足 …     

初二第一学期期末考试英语试题

笔试部分(80分)一、辨音:5分(　)1.a.great　b.reach　c.read　d.leave(　)2.a.playb.saysc.stayd.way(　)3.a.askedb.startedc.neededd.wanted(　)4.a.classroomb.foodc.footd.cook(　)5.a.talkb.tall　c.always　d.walk(　)6.a.whiteb.whatc.whered.whose(　)7.a.hopeb.doc.holdd.go(　)8.a.twin　b.twelfth　c.two　d.twenty(　)9.a.boughtb.for　c.taught　d.could(　)10.a.hereb.nearc.yeard.careful二、将下列单词拼写完整,并写出中文:5分(　)1.doct(　)a.er　　b.ar　　c.re　　d.or(　)2.Agst(　)a.u…ub.u…ec.e…ud.u…a(　)3.so…     

等差数列、等比数列中两个命题的应用

一、命题1在等差数列{an}中,若k,l,P,q∈N*,且k+l=P+q,那么ak+al=ap+aq.应用这一结论,可以解决相关的一些问题.例1在等差数列{an}中,如果a3+a4+a5+a6+a7+a8=30,则该数列的前lO项之和S10=().A.30B.40C.50D.60解:由a3+a4+a5+a6+a7+a8=30,得3(a3+a8)=30,从而a1+a10=a3+a8=10,S10=(10(a1+a10))/2=50.故选C.     

2011年中考自测题(二) 数学

A卷(共100分)一、选择题:(每小题3分,共30分)1.--13的倒数是().A.3B.-3C.13D.-312.下列运算中,结果正确的是().A.a4+a4=a8B.a3·a2=a5C.a8÷a2=a4D.(-2a2)3=-6a63.下列命题中错误的命题是().A.平行四边形是中心对称图形B.菱形的对角线互相垂直平分C.近似数3.14×103精确到百分位     

The Girl Next to Me

In our class,usually a girl sitsnext to a girl, and a boy sits nextto a boy.I’m a girl,so the onenext to me is a girl, a very nicegirl named Liu Shuo. Although she isn’t a beautifulgirl, she looks very happy.Thesmile shines on her face.I think itmakes her very nice.     

期末小测验(初一)

一、选择题(以下每题有四个答案可供选择,其中只有一个是正确的,请将表示正确答案的字母填在该题后面的圆括号内). 1.下列运算正确的是( ) (A)a3÷a3=a. (B)a3 a3=2a3. (C)(a3)3=a6. (D)a3·a3=2a9.     

ω的二个巧妙用法

0 口匹2多口设方程户一!.0的一解是.,,则有关系式。2十。+1二0,另一娜.1+同理由⑧知 d.+.,a一:二(一1).山+1二O,必,一1,。s二1。.+必+里二0,勿~。’,‘二.盆- 这个。在数列上有其独特的作用。 例1设数列{a.}的前ff项和为s.,5.二a一:且a。二a:.项公式.亿丁 2,试求{口。}的通 解:’:a二S一5._:由瓜设S二a。.。。 a.御a.一.一a一” 即a一a一:+a一:二0① 由。的关系式得a.+(。十.名)a..:十。3a。一:二0。 (a,+。a._:)+.2(a一:+‘a.,,)“0.② (a,+。Za,_,)+。(a,一:+。.a,一:)二0 ①:谙勿今廷l夕·+田a“。_l十田a一:刁一印:、lj{。。+。。,一:…