简介:hoolardenfnglishUnit5TheBritishIslesⅠ.单项填空1.ThecultureandcustomsofAmericaareverymuchlikeofEng-land.A.thatB.whatC.whichD.those2.Communistspiritconsistswhole-hearteddevotiontopublicin-terests.A.inB.withC.ofD.on3.—IdontthinkJackcansingwell.—Butyouareshy,heiscourageous.A.whereB.whatC.thoughD.if4.Actually,heisanew-comerunknownusall.A.forB.asC.byD.to5.CharlesBabbageisgenerallyconsideredthefirstcomputer.A.toinventB.inventingC.tohaveinvent...
简介:一、填空题(每空3分,共33分)1.当x=时,分式|x|-2x-2的值为零.2.在分式nm中,当时,分式无意义,当时,分式的值为零.3.约分14a5b363ab4c=.4.若a-1a=1,则a2+a-2=.5.若a-bb=23,则ab=.6.当x时,代数式2x-3-1x+2+3x2+1有意义.7.如果1x-3+1=ax-3会产生增根,那么a的值应是.8.若分式x-32x+1的值为负,则x的取值范围为.9.(ba+ab)x=ab-ba-2x (a+b≠0),则x=.10.化简1+11-11+1x=.二、选择题(每小题4分,共32分)1.分式|m+n|m+n的值是( ).(A)1 (B)-1 (C
简介:(满分100分,90分钟完成),(A)基础知识达标检测一、选择题(每小题4分,共40分)1.如图8—3,AB/CD,.IIN分别交tB、∽于’f、~,c,’乎分z。(:八£,么1=120",01lj么2=().(,{)60*(启)50*(0)40)(D)30*2.任何一个三角形的个内角中至少有().(jI)一个街大,‘60)(B)两个锐角(c)个钝角(D)一个直角3.△4BC中~/l、/B、么C的度数比是1:2:3.那么AjtBC是(1.(4)等腰三角形(B)锐角三角形(C)直自三角形【口)钝角三角形4。如果一仑多曲形的内角和等于篼咿,那么这个多边彤是(