- 问题详情:1.Thereisa________(明显)improvementinyourspokenEnglish.2.Scientistsareworkingtofinda________(方法)ofstoringthistypeofpower.3.He________(决定)thatheshouldbecomeadoctor.4.Howlongcanthepresentbusiness________(繁荣)last?5.The________(多数)ofhisbooksar...
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- 问题详情:根据句意及所给中文提示、英文解释或首字母,写出句中所缺单词,每空限填一词。1.Thereisa (*)andsomepensonWangJun’sdesk.2.Driversshoulddrivemoreslowlyon (有雨的)days.3.AudreyHepburnisa (天生的)actress.Sheisworldfamous.4.Mostpeoplei...
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- 问题详情:若(x-1)0=1则 ( ) A.x≥1 B.x≤1 C.x≠1 D.x≠0【回答】C知识点:分式的运算题型:选择题...
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- 问题详情: Nowadays,thereisa_______increaseinchildren’screativity,fortheyaregreatlyencouragedtodeveloptheirtalents.A.sharp B.slight C.natural ...
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- 问题详情:InfrontoftheenormousShibuyatrainstationinTokyo,thereisalife-sizebronzestatue(雕像)ofadog.Eventhoughthestatueisverysmallwhencomparedtothehugeneonsignsflashing,itisn’tdifficulttofind.Ithasbeenusedasameetingpointsince1934andtodayyouwillfindhund...
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- 问题详情:(22+1)(24+1)(28+1)(216+1)+1=.【回答】232.【考点】平方差公式.【专题】计算题.【分析】原式乘以(2﹣1)后,利用平方差公式依次计算,合并即可得到结果.【解答】解:原式=(2﹣1)(2+1)(22+1)(24+1)(28+1)(216+1)+1=(22﹣1)(22+1)(24+1)(28+1)(216+1)+1=(24﹣1)(24+1)(28+1)(216+1)+1=(28﹣1)(28+1)(216+1)+1=(216﹣1)(216+1)+1=232﹣1+1=232.故...
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- 问题详情:根据(x﹣1)(x+1)=x2﹣1,(x﹣1)(x2+x+1)=x3﹣1,(x﹣1)(x3+x2+x+1)=x4﹣1,…的规律,则可以得出22017+22016+22015+…+23+22+2+1的结果可以表示为 .【回答】22018﹣1.【解答】解:22017+22016+22015+…+23+22+2+1=(2﹣1)(22017+22016+22015+…+23+22+2+1)=22018﹣1.知识点:乘法公式题型:填空题...
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- 问题详情:观察下列各式:(x﹣1)÷(x﹣1)=1(x2﹣1)÷(x﹣1)=x+1;(x3﹣1)÷(x﹣1)=x2+x+1(x4﹣1)÷(x﹣1)=x3+x2+x+1(1)根据上面各式的规律可得(xn+1﹣1)÷(x﹣1)= ;(2)求22019+22018+22017+……+2+1的值.【回答】解:(1)根据上面各式的规律,可得:(xn+1﹣1)÷(x﹣1)=xn+xn﹣1+…+x+1. (2)∵(xn+1﹣1)÷(x﹣1)=xn+xn﹣1+…+x+1,∴22019+22018+22017+……+2+1=(22020...
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- 问题详情: (x-1)-(1-x)+(x+1)=3x-1.()【回答】∨知识点:整式的加减题型:填空题...
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- 问题详情: Thereisa______nearhere.Youcangetsomemoneythere..A.bank B.supermarket C.library D.bookstore【回答】A知识点:名词题型:选择题...
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- 问题详情:计算:(1﹣)×(1﹣)×(1﹣)×(1﹣)×…×(1﹣)×(1﹣)【回答】解:原式=××××…××=.知识点:有理数的乘除法题型:解答题...
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- 问题详情:计算:(1-)(1-)(1-)……(1-)(1-).【回答】原式=(1-)(1+)(1-)(1+)(1-)(1+)……(1-)(1+)(1-)(1+)=×××……××=×=.知识点:乘法公式题型:计算题...
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- 问题详情: (+1)(-1)-+()-1;【回答】解:原式=3-1-4+2=0.知识点:二次根式的乘除题型:计算题...
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- 问题详情:计算: +()﹣1﹣(+1)(﹣1)【回答】【考点】二次根式的混合运算;负整数指数幂.【专题】计算题.【分析】原式第一项化为最简二次根式,第二项利用负指数公式化简,第三项利用平方差公式化简,合并后即可得到结果.【解答】解: +()﹣1﹣(+1)(﹣1)=2+4﹣(5﹣1)=2+4﹣4=2.【点评】此题考查了二次根式的混合运算,涉及...
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- 问题详情:.阅读材料,回答问题.(1+)×(1-)=×=1;(1+)×(1+)×(1-)×(1-)=×××=(×)×(×)=1×1=1.根据以上信息,计算:(1+)×(1+)×(1+)×…×(1+)×(1-)×(1-)×(1-)×…×(1-).【回答】解:(1+)×(1+)×(1+)×…×(1+)×(1-)×(1-)×(1-)×…×(1-)=×××…×××××…×=(×)×(×)×(×)×…×(×)=1.知识点:...
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- 问题详情:Thereisa___island.Onittherearemanywildbeautifulflowers.A.lonelyB.alongC./D.alone【回答】A知识点:副词题型:选择题...
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- 问题详情:.计算(﹣1)1+(﹣1)2+…+(﹣1)2000=. ...
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- 问题详情:Thereisa(an) ____ thatmoregraduateschooseteachingastheirpermanentcareers.A.direction B.attraction C.tendency D.attempt 【回答】A知识点:名词题型:选择题...
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- 问题详情:句型转换。1.Therearetwoapplesinthebasket.(对画线部分提问)2.Thereisalittlemilkinthebottleonthedesk.(对画线部分提问)3.Iboughtsomethingelse.(对画线部分提问)4.Whydon’tyougowithus?(改为同义句)5.Thereisnochickenoverthere.(改为同义句)6.EveryoneinEnglands...
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- 问题详情:Thereisa cuponthetable.A.nicenewbigplastic B.newplasticbignice C.nicebignewplastic D.newniceplasticbig 【回答】C知识点:形容词题型:选择题...
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- 问题详情:先观察:1﹣=×,1﹣=×,1﹣=×,…(1)探究规律填空:1﹣=×;(2)计算:(1﹣)•(1﹣)•(1﹣)…(1﹣)【回答】【考点】有理数的混合运算.【分析】(1)利用平方差公式变形即可得到结果;(2)原式利用平方差公式化简,计算即可得到结果.【解答】解:(1)原式=×;(2)原式=(1﹣)(1+)(1﹣)(1+)…(1﹣)(1+)=××××…××=,故*为:(1);知识点:有理数的乘方题型:...
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- 问题详情: AfterTomhadhisarmbrokenyesterday,thereisa(n)______chancethathewilltakepartinthetennismatchtomorrow. A.slim B.fierce C.obvious D.great【回答】A知识点:形容词题型:选择题...
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- 问题详情:AtBeaverMeadowsRanchonRedFeatherLakes,Colorado,thereisalonglistofoutdoorwinteractivitiesfortheentirefamily.Takeawintervacationthere.IceFishingFor$10aday,visitorscantrytheirhandaticefishing.Icefishingisavailablefrom9:30a.m.to4p.m.sevendaysawee...
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- 问题详情:单项选择;根据语境或句意,选择可填入句子的最佳选项。Thereisa______inmyneighborhoodandIoftengotheretoseetigers. A.zoo B.bank C.school【回答】A知识点:名词题型:选择题...
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- 问题详情:阅读理解。OnmorningMrsPetersaidtoherhusband,“Jack,thereisameetingofourladiesclub(俱乐部)atMrs.Green’shouseatlunchtimetoday,andIwanttogotoit.I’llhaveyousomefoodforyourlunch.Isthatallright?”“Oh,yes,”herhusbandanswered,“that’squiteallrig...
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