- 問題詳情:1.Thereisa________(明顯)improvementinyourspokenEnglish.2.Scientistsareworkingtofinda________(方法)ofstoringthistypeofpower.3.He________(決定)thatheshouldbecomeadoctor.4.Howlongcanthepresentbusiness________(繁榮)last?5.The________(多數)ofhisbooksar...
- 28704
- 問題詳情:Thereisa(an) ____ thatmoregraduateschooseteachingastheirpermanentcareers.A.direction B.attraction C.tendency D.attempt 【回答】A知識點:名詞題型:選擇題...
- 22009
- 問題詳情:(22+1)(24+1)(28+1)(216+1)+1=.【回答】232.【考點】平方差公式.【專題】計算題.【分析】原式乘以(2﹣1)後,利用平方差公式依次計算,合併即可得到結果.【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...
- 19166
- 問題詳情: (x-1)-(1-x)+(x+1)=3x-1.()【回答】∨知識點:整式的加減題型:填空題...
- 32947
- 問題詳情:.閱讀材料,回答問題.(1+)×(1-)=×=1;(1+)×(1+)×(1-)×(1-)=×××=(×)×(×)=1×1=1.根據以上資訊,計算:(1+)×(1+)×(1+)×…×(1+)×(1-)×(1-)×(1-)×…×(1-).【回答】解:(1+)×(1+)×(1+)×…×(1+)×(1-)×(1-)×(1-)×…×(1-)=×××…×××××…×=(×)×(×)×(×)×…×(×)=1.知識點:...
- 7788
- 問題詳情:.計算(﹣1)1+(﹣1)2+…+(﹣1)2000=. ...
- 21249
- 問題詳情: AfterTomhadhisarmbrokenyesterday,thereisa(n)______chancethathewilltakepartinthetennismatchtomorrow. A.slim B.fierce C.obvious D.great【回答】A知識點:形容詞題型:選擇題...
- 21126
- 問題詳情:觀察下列各式:(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)根據上面各式的規律可得(xn+1﹣1)÷(x﹣1)= ;(2)求22019+22018+22017+……+2+1的值.【回答】解:(1)根據上面各式的規律,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...
- 17232
- 問題詳情: Nowadays,thereisa_______increaseinchildren’screativity,fortheyaregreatlyencouragedtodeveloptheirtalents.A.sharp B.slight C.natural ...
- 24726
- 問題詳情:單項選擇;根據語境或句意,選擇可填入句子的最佳選項。Thereisa______inmyneighborhoodandIoftengotheretoseetigers. A.zoo B.bank C.school【回答】A知識點:名詞題型:選擇題...
- 24597
- 問題詳情:根據(x﹣1)(x+1)=x2﹣1,(x﹣1)(x2+x+1)=x3﹣1,(x﹣1)(x3+x2+x+1)=x4﹣1,…的規律,則可以得出22017+22016+22015+…+23+22+2+1的結果可以表示爲 .【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.知識點:乘法公式題型:填空題...
- 30069
- 問題詳情:計算: +()﹣1﹣(+1)(﹣1)【回答】【考點】二次根式的混合運算;負整數指數冪.【專題】計算題.【分析】原式第一項化爲最簡二次根式,第二項利用負指數公式化簡,第三項利用平方差公式化簡,合併後即可得到結果.【解答】解: +()﹣1﹣(+1)(﹣1)=2+4﹣(5﹣1)=2+4﹣4=2.【點評】此題考查了二次根式的混合運算,涉及...
- 30951
- 問題詳情:若(x-1)0=1則 ( ) A.x≥1 B.x≤1 C.x≠1 D.x≠0【回答】C知識點:分式的運算題型:選擇題...
- 20758
- 問題詳情: (+1)(-1)-+()-1;【回答】解:原式=3-1-4+2=0.知識點:二次根式的乘除題型:計算題...
- 5104
- 問題詳情:句型轉換。1.Therearetwoapplesinthebasket.(對畫線部分提問)2.Thereisalittlemilkinthebottleonthedesk.(對畫線部分提問)3.Iboughtsomethingelse.(對畫線部分提問)4.Whydon’tyougowithus?(改爲同義句)5.Thereisnochickenoverthere.(改爲同義句)6.EveryoneinEnglands...
- 22266
- 問題詳情:InfrontoftheenormousShibuyatrainstationinTokyo,thereisalife-sizebronzestatue(雕像)ofadog.Eventhoughthestatueisverysmallwhencomparedtothehugeneonsignsflashing,itisn’tdifficulttofind.Ithasbeenusedasameetingpointsince1934andtodayyouwillfindhund...
- 12277
- 問題詳情:根據句意及所給中文提示、英文解釋或首字母,寫出句中所缺單詞,每空限填一詞。1.Thereisa (*)andsomepensonWangJun’sdesk.2.Driversshoulddrivemoreslowlyon (有雨的)days.3.AudreyHepburnisa (天生的)actress.Sheisworldfamous.4.Mostpeoplei...
- 32769
- 問題詳情:計算:(1-)(1-)(1-)……(1-)(1-).【回答】原式=(1-)(1+)(1-)(1+)(1-)(1+)……(1-)(1+)(1-)(1+)=×××……××=×=.知識點:乘法公式題型:計算題...
- 30891
- 問題詳情:閱讀理解。OnmorningMrsPetersaidtoherhusband,“Jack,thereisameetingofourladiesclub(俱樂部)atMrs.Green’shouseatlunchtimetoday,andIwanttogotoit.I’llhaveyousomefoodforyourlunch.Isthatallright?”“Oh,yes,”herhusbandanswered,“that’squiteallrig...
- 6846
- 問題詳情:計算:(1﹣)×(1﹣)×(1﹣)×(1﹣)×…×(1﹣)×(1﹣)【回答】解:原式=××××…××=.知識點:有理數的乘除法題型:解答題...
- 12347
- 問題詳情:AtBeaverMeadowsRanchonRedFeatherLakes,Colorado,thereisalonglistofoutdoorwinteractivitiesfortheentirefamily.Takeawintervacationthere.IceFishingFor$10aday,visitorscantrytheirhandaticefishing.Icefishingisavailablefrom9:30a.m.to4p.m.sevendaysawee...
- 8011
- 問題詳情:Thereisa cuponthetable.A.nicenewbigplastic B.newplasticbignice C.nicebignewplastic D.newniceplasticbig 【回答】C知識點:形容詞題型:選擇題...
- 16510
- 問題詳情: Thereisa______nearhere.Youcangetsomemoneythere..A.bank B.supermarket C.library D.bookstore【回答】A知識點:名詞題型:選擇題...
- 32220
- 問題詳情:Thereisa___island.Onittherearemanywildbeautifulflowers.A.lonelyB.alongC./D.alone【回答】A知識點:副詞題型:選擇題...
- 6088
- 問題詳情:先觀察:1﹣=×,1﹣=×,1﹣=×,…(1)探究規律填空:1﹣=×;(2)計算:(1﹣)•(1﹣)•(1﹣)…(1﹣)【回答】【考點】有理數的混合運算.【分析】(1)利用平方差公式變形即可得到結果;(2)原式利用平方差公式化簡,計算即可得到結果.【解答】解:(1)原式=×;(2)原式=(1﹣)(1+)(1﹣)(1+)…(1﹣)(1+)=××××…××=,故*爲:(1);知識點:有理數的乘方題型:...
- 16758