问题详情: 词汇运用。用所给单词的适当形式填空。1.I’m glad to see my son _______ (achieve)their dreams.2.Sheisveryexcitedabout_______(get)apart-timejob.Shereallylikesworkinginthe_______(shop)center.3.Everystudentshouldbe___________(educate...
2020-12-10 25910
问题详情:复数z=i(i+1)(i为虚数单位)的共轭复数是()A.-1-i B.-1+I C.1-i D.1+i【回答】D知识点:数系的扩充与复数的引入题型:选择题...
2021-05-13 23125
问题详情:已知复数z=i(1+i)(i为虚数单位),则复数z在复平面上所对应的点位于()A.第一象限 B.第二象限 C.第三象限 D.第四象限【回答】B、知识点:数系的扩充与复数的引入题型:选择题...
2020-05-07 10771
问题详情:词汇考查;根据句意及首字母提示补全所缺单词。1.I__________(想要)tobuyawhiteskirt.Mineisold. 2.OurteachersaysEnglishisvery______________(有用的).3.Wedon’thaveclassesonSaturdaysand_______________(星期日).4.Thestoreisopen (从...
2021-10-27 12833
问题详情:1.I’veputaT-shirtonundermysweaterforextra (暖和).2.Peopledon’tbelievethe_______________________(存在)ofghosts.3.His_______________________(笨拙)speech annoyed everyone.4.ThefirstBritish ...
2019-10-25 12150
问题详情:下列程序的功能是()S=1i=1WHILES<=2012i=i+2S=S×iWENDPRINTiENDA.计算1+3+5+…+2012B.计算1×3×5×…×2012C.求方程1×3×5×…×i=2012中的i值D.求满足1×3×5×…×i>2012的最小整数i【回答】D[解析]执行该程序可知S=1×3×5×…×i,当S≤2012开始不成立,即S>2012开始成立时,输...
2023-02-10 8076
问题详情:已知复数z满足(1+i)z=1+i,则|z|=()A. B. C. D.2【回答】 A.考点:复数代数形式的乘除运算.专题:数系的扩充和复数.分析:利用复数代数形式的乘除运算化简求出z,然后直接代入复数模的公式求解.解答:解:∵(1+i)z=1+i,∴=.∴.故选:A.点评:本题考查了复数代数形式的乘除运算,考查了复数模的求法...
2022-04-25 26702
问题详情:用所给动词的适当形式填空1.I______(cut)myhairwhenthestrangemanpassedthedoor.se______(light)thecandle.It’stoodark.3.Ifoundabottle______(fill)withsugarnearthegate.earemanyboys______(climb)thehill.rheleavesschool,he______(go)tocollege.【回答】1....
2021-06-01 21467
问题详情:根据句意及首字母提示,填写单词。1.I’dliketohavetwoapplep________.2.Boys,stopt_______stonesatthepoordog.3.ThedishMomcookedp_________anicesmell.4.Onec_________meansahundredyears.5.Ina_________times,itwashardforpeopletotravelaround.【回答】1.pies...
2021-09-16 28576
问题详情:已知x,y∈R,i是虚数单位,且(x-1)i-y=2+i,则(1+i)x-y的值是()A.-4 B.4 C.-1 D.1【回答】A知识点:数系的扩充与复数的引入题型:选择题...
2021-10-13 28020
问题详情:已知a∈R,复数z=(a﹣2i)(1+i)(i为虚数单位)在复平面内对应的点为M,则“a=0”是“点M在第四象限”的()A.充分而不必要条件B.必要而不充分条件C.充分必要条件D.既不充分也不必要条件【回答】A【考点】必要条件、充分条件与充要条件的判断.【专题】简易逻辑.【分析】根据充分必要条件...
2019-04-27 17947
问题详情:根据首字母、汉语注释或上下文意思,在横线上写出各单词的正确形式。每空一词。1.I’mthem ofthedog,Itakeitforawalkeveryday.2.I’mgoodat (跳舞),IpractiseiteverySunday.workshard,Ithinkhisdreamwillcome ...
2020-06-18 12553
问题详情:已知复数z1满足(1+i)z1=-1+5i,z2=a-2-i,其中i为虚数单位,a∈R,若<,求a的取值范围.【回答】解:由题意得z1==2+3i, 于是==,=. <,得a2-8a+7<0,1<a<7.知识点:数系的扩充与复数的引入题型:计算题...
2020-12-20 29748
问题详情:句型转换1.I study for a test by listening to tapes.(提问) _____do you _____ for a test?2.Theylockthedoorwhentheygoout.(改为被动语态)Thedoor______________whentheygoout.3.Thereislittlewaterinthebottle,_____________?(反意疑问句)4.Y...
2020-05-03 25147
问题详情:已知i是虚数单位,若z(1+i)=1+3i,则z=()A.2+i B.2﹣iC.﹣1+i D.﹣1﹣i【回答】 A【考点】复数代数形式的乘除运算.【分析】直接利用复数代数形式的乘除运算化简得*.【解答】解:由z(1+i)=1+3i,得,故选:A.【点评】本题考查复数代数形式的乘除运算,是基础的计算题.知识点:数系的扩充与...
2020-12-07 25730
问题详情:用所给单词的适当形式填空。1.I’mveryglad_______(see)myoldfriend.2.Thanksfor_______(help)mewithmyEnglish.3.Hereisaletterof (invite)foryou.4.Don’trefuse_______(accept)mygift.5.Helefttheroomwithout________(say)aword.【回答】1...
2019-08-24 25333
问题详情:设i为虚数单位,则复数(1+i)2=()A.0 B.2 C.2i D.2+2i【回答】C【考点】A5:复数代数形式的乘除运算.【分析】利用复数的运算法则即可得出.【解答】解:(1+i)2=1+i2+2i=1﹣1+2i=2i,故选:C.知识点:数系的扩充与复数的引入题型:选择题...
2020-08-12 6658
问题详情:如图*所示,R2为电阻箱调节R2时电流表示数I随之变化.如图乙所示是电阻箱阻值R2与电流表示数的倒数1/I的图象.则定值电阻R1与电源电压U的大小分别为A.5Ω 30V B.5Ω 2.5V C.10Ω 20V D.10...
2019-08-26 10052
问题详情:根据句意和首字母或汉语提示完成单词1.I’mthirsty.I’dliketosomething. 2.Ilikeeating’svery. mbertoeatwellandstay. 4.—Howmany(西红柿)arethereinthefridge? —Therearefour.ngmore(蔬菜)canhelpuskeepingoodhealth. 【回答】1.drink2.deliciousthyt...
2020-07-27 11217
问题详情:填一填,想一想:语法规律,再上台阶A)用am,is,are填空。想一想它们的选用与什么有关。1.I________________Frank.Grace_______________myname.2.—How__________________you,Helen? —I_______________OK,thankyou.3.DaleandI_____________goodfriends.Dale_________...
2020-07-22 26595
问题详情:用所给词的适当形式填空1.I’m(luck)tobeyourstudent.2.Wehave(difference)ideas.3.Itisnotgoodforyoutoeattoomany(candy).4.There(be)somemuttoninthenoodles.5.Tostudyhardcanhelptomakeyourwish(come)true.【回答】1.lucky2.different3.candies4.is5.come知...
2020-10-30 12608
问题详情:句型转换1.I’dliketwokilosofbeef.(划线部分提问) beef youlike?2.Thegirlusuallyhasmilkandcakesforbreakfast.(划线部分提问) thegirlusually forbreakfas...
2020-03-29 22550
问题详情:1.I’m thirteenyearso . 2.Jennyhasah family..3.She’llcometomybirthdayp__ _. 4.look!Theyarem dumplings.5.Thepictureisa thebed. 【回答】知识点:单词拼写...
2021-03-29 25802
问题详情:设aR,若复数(1+i)(a+i)在复平面内对应的点位于实轴上,则a=_______________。【回答】【解析】∵其对应点在实轴上∴, 知识点:高考试题题型:填空题...
2021-08-17 16745
问题详情:下列词语中加点的字,读音全都正确的一组是( )A.蟊贼(máo) 装载(zǎi) 镣铐(1iào) 轻歌曼舞(màn)B.遒劲(qiú) 渐染(jiàn) 觊觎(jì) 喁喁私语(yú)C.粗犷(guǎng) 磐石(pán) 奶酪(nào) 一脉相承(...
2022-04-24 26838