,#,/,14,中考,数,学一模试卷,一,、,单,选题,(,共,8,题;共,16,分),1.2020,年初,,,新,型,冠,状病,毒引,发,肺,炎,疫情,.,一,方,有,难,,,八方,支,援,,,危,难,时,刻,,,全国,多,家,医,院,纷,纷,选,派,医,护人 员驰,援,武汉,.,下,面,是,四,家,医,院标,志,的,图,案,部,分,,,其,中,是轴,对,称,图,形,的,是(,),A.,B.,C.,D.,据,报,道,,,位,于,丰,台区,的,北京,排,水,集,团,槐,房,再,生,水,厂,,是,亚,洲,规,模,最,大,的,一,座全,地,下,再,生,水,厂,,,日,处,理污 水,能,力,600000,立,方,米,,,服,务,面,积,137,平,方,公,里,将,600000,用科,学,记,数,法,表示,为(,),A.,0.610,5,B.,0.610,6,C.,610,5,D.,610,6,正,六,边,形,的,每,个,内角,度,数为(,),A.,60,B.,120,C.,135D.,150,下,列,几,何,体,中,,,其俯,视,图与,主,视,图,完,全,相,同,的,是,(,),A.,B.,C.,D.,5.,在,数,轴,上,,,点,A,,,B,分别,表示,数,a,那么,a,的,值,为(,),A.,3,B.,1,,,3,,,点,A,关,于,原点,O,的,对,称,点为,点,C,如,果,C,为,AB,的中,点,,C.,1D.,3,6.,在,O,中,按,如,下,步,骤,作,图,:,作,O,的,直,径,A,D,;,(,2,),以点,D,为,圆,心,,,D,O,长,为半,径画,弧,,,交,O,于,B,,,C,两,点,;,(,3,),连接,D,B,,,DC,,,AB,,,AC,,,BC,根,据,以,上,作,图,过,程及,所作,图,形,,,下,列,四,个,结,论,中错,误,的,是,(,),A.,ABD,90,B.,BAD,CBD,C.,AD,BC,D.,AC,2,CD,7.,某,区,响,应,国,家,提,出的,垃,圾分,类,的,号,召,,,将,生,活,垃,圾分,为,厨,余,垃,圾,、,可,回,收,物、,有,害,垃,圾,和,其,他,垃,圾,四,类,,并,分,别,设,置,了,相,应,的,垃圾,箱,为,了,解,居,民,生,活,垃圾,分,类,的,情,况,,,随,机,对,该区,四,类,垃,圾,箱,中,总,计,1000,吨生,活,垃,圾,进,行,分,拣,后,,,统计,数,据,如,表:,垃圾,箱,种类,“,厨,余,垃,圾,”,箱,“,可,回,收,物,”,箱,“,有,害,垃,圾,”,箱,“,其,他,垃,圾,”,箱,1,/,14,中考数学一模试卷A.B.C.D.据报道,位于丰台区的北京排水,垃圾量,垃圾,种,类,(,吨),厨余,垃,圾,400,100,40,60,可回,收,物,30,140,10,20,有害,垃,圾,5,20,60,15,其他,垃,圾,25,15,20,40,下列,三,种,说,法:,厨,余,垃,圾,投,放,错,误的,有,4,0,0,t,;,(,2,),估,计,可,回,收,物,投放,正,确,的,概,率,约为,;,(,3,),数,据,显,示,四,类,垃,圾箱 中都,存,在,各,类,垃,圾,混,放,的,现象,,,因,此,应,该,继,续,对,居,民进,行,生,活,垃,圾,分,类,的,科,普,其,中,正,确,的,个,数,是(,),A.0B.1C.,2D.,3,图,书,馆,将,某,一,本,书和,某,一个,关,键,词,建,立,联,系,,,规,定:,当,关,键,词,A,i,出,现在,书,B,j,中,时,,,元素,a,ij,1,,,否,则,a,ij,0,(,i,,,j,为,正,整,数,),例如,:,当,关键,词,A,1,出,现,在,书,B,4,中,时,,,a,14,1,,,否,则,a,14,0,根,据,上,述,规,定,,某 读者,去,图,书,馆,寻,找,书,中,同,时有,关,键,词,“,A,2,,,A,5,,,A,6,”,的,书,,,则,下,列,相关,表述,错,误,的,是(,),A.,当,a,21,+,a,51,+,a,61,3,时,,选,择,B,1,这,本书,B.,当,a,22,+,a,52,+,a,62,3,时,,,不,选择,B,2,这本书,C.,当,a,2,j,,,a,5,j,,,a,6,j,全是,1,时,,,选,择,B,j,这,本书,书,二,、,填,空题,(,共,7,题;共,9,分),有意,义,,,则,实,数,a,的,取,值范,围,是,.,如,图,所,示,的,网,格,是,正,方,形网,格,,则,D.,只,有,当,a,2,j,+,a,5,j,+,a,6,j,0,时,,,才,不,能,选择,B,j,这本,(,点,A,,,B,,,P,是,网,格,线,交,点,),.,当,m,+,n,1,时,,,代,数,式,(,m,2,n,2,),的,值为,如,图,,,ABCD,中,,,E,为,AD,上,一,点,,,F,为,BC,上,一点,,,EF,与,对,角,线,BD,交,于点,O,,,以,下,三,个,条,件,:,BO,DO,;,EO,FO,;,A,E,CF,,,以,其,中,一,个作,为,题,设,,,余,下,的,两,个,作为,结,论,组,成,命,题,,,其,中,真命,题,的,个,数,为,2,/,14,垃圾量厨余垃圾4001004060可回收物301401020,13.,如图,1,,,小,长,方,形,纸,片,的,长,为,2,,,宽,为,1,,,将,4,张,这样,的,小,长,方,形,纸,片按,图,2,所,示,的,方,式,不,重,叠,的放,在,大长,方,形,内,,,未,被,覆,盖,的,部分,恰,好,被,分,割,为,两,个,长,方形,和,,,设,长,方,形,和,的,周,长,分,别,为,C,1,和,C,2,,,则,C,1,C,2,(,填,“,”,、,“,”,或,“,”,),14.,某,研,究,所,发,布,了,2019,年中,国,城,市,综,合,实,力,排,行,榜,,,其,中,部,分,城,市,的,综,合实,力,、,GDP,和,教,育,科,研,与 医疗,的,排,名,情,况,如,图,所,示,,综,合,实,力,排,名,全,国,第,5,名的,城,市,,,教,育,科,研,与,医,疗排,名,全,国,第,名,15.,某,快,递,公,司,的,快,递,件,分,为甲,类,件,和,乙,类,件,,,快,递,员送,甲,类,件,每,件收,入,1,元,,送,乙,类,件,每,件收,入,2,元累,计工作,1,小,时,,,只,送,甲类,件,,最,多,可,送,30,件,,,只送,乙类,件,,,最,多,可,送,10,件;,累计,工,作,2,小,时,,,只,送甲,类,件,,最,多,可,送,55,件,,,只,送,乙类,件,,,最,多,可,送,20,件,;,,,经,整,理,形,成,统,计,表,如,表,:,累计,工,作,时,长,最,多,件,数,(,时),种类,(,件),1,2,3,4,5,6,7,8,甲类件,30,55,80,1,0,0,1,1,5,125,1,3,5,1,4,5,乙类件,10,20,30,40,50,60,70,80,如,果,快,递,员,一,天工,作,8,小,时,,,且,只,送,某,一类,件,,那,么,他,一,天,的,最,大,收,入,为,元;,如,果,快,递,员,一,天,累,计,送,x,小,时,甲,类,件,,,y,小,时,乙,类件,,,且,x,+,y,8,,,x,,,y,均为,正,整,数,,,那,么,他,一,天 的最,大,收,入,为,元,三,、,解,答题,(,共,13,题,;,共,99,分),16.,已,知,函数,y,kx,2,+,(,2,k,+1,),x,+1,(,k,为,实,数,),对,于,任,意,实,数,k,,函,数,图,象,一,定,经,过,点,(,2,,,1,),和,点,;,对,于,任,意,正,实数,k,,,当,x,m,时,,,y,随,着,x,的增,大,而,增,大,,,写,出,一,个,满足,题意,的,m,的,值,17.,计,算,:,2cos30+,(,3,),0,+|1,|,18,.,解,不,等,式,组:,3,/,14,13.如图 1,小长方形纸片的长为 2,宽为 1,将 4 张,19.,如,图,,,在,ABC,中,,,CAB,CBA,,,AD,BC,于,点,D,,,BE,AC,于,点,E,求,证,:,AD,BE,20.,关于,x,的,一,元,二次,方,程,x,2,4,x,+2,m,2,0,有,两个,不相,等,的,实,数,根,求,m,的,取,值,范,围;,写,出,一,个,满,足,条件,的,m,的,值,,并,求,此,时,方程,的根,21.,在,平,面,直,角,坐,标系,xOy,中,,一,次,函,数,y,x,+4,的,图,象与,y,轴,交,于,点,A,,,与,反比,例,函数,y,的,图,象的,一个,交点,为,M,求,点,A,的,坐,标;,连,接,OM,,,如果,MOA,的,面,积,等,于,2,,,求,k,的值,22.,如,图,,,在,ABCD,中,,,AC,,,BD,交,于,点,O,,且,AO,BO,求,证,:,四,边,形,ABCD,是矩,形,;,ADB,的,角,平,分,线,DE,交,AB,于,点,E,,当,AD,3,,,tan,CAB,时,求,AE,的,长,23.,居,民,人,均,可,支,配,收,入,、,居民,人,均,消,费,总,支,出,和,恩,格尔,系,数,都,是,反,映,居,民,生,活水,平,的,指,标,,,其,中,恩,格,尔 系数,指,居,民,家,庭,中,食,品,支,出占,消,费,总,支,出,的,比,重,,,恩格,尔,系,数,越,小,,,说,明,食,品支,出,占,消,费,总,支,出,比,重,越 低,,居,民,家,庭,越,富,裕,,,反,之越,贫,穷,下面,是,根,据,从,权,威,机,构,获,得的,部,分,数,据,绘,制,的,统,计,图:,4,/,14,19.如图,在ABC 中,CABCBA,ADB,根据,以,上,信,息,,,回,答,下,列,问题:,(,1,),2019,年,中,国,城,乡,居,民恩,格,尔,系,数,m,约,为,(,精,确,到,0.1%,);,(,2,),2019,年,居,民,人,均,消,费总,支,出,n,约,为,万元,(,精,确,到,千,位,);,(,3,),下,面,的,推,断,合,理,的,是,2015,2019,年,中,国,城,乡,居民,人,均,可,支,配,收,入,和,人,均消,费,总,支,出,均,呈,逐,年,上,升的,趋,势,,,说,明,中,国,居,民,生 活水,平,逐,步,提,高,;,2015,2019,年,中,国,城,乡,居民,恩,格,尔,系,数,呈,现,下,降,趋势,,,说,明,中,国,居,民,家,庭,富裕,程,度,越,来,越,高,24.,在,Rt,ABC,中,,,A,90,,,B,22.5,,,点,P,为线,段,BC,上,一,动,点,,,当,点,P,运,动到,某,一,位,置,时,,,它,到点,A,,,B,的,距,离,都,等于,a,,,到,点,P,的,距,离,等于,a,的,所有,点,组,成,的,图形,为,W,,,点,D,为,线段,BC,延,长,线 上一,点,,,且,点,D,到点,A,的,距离,也等,于,a,(,1,),求,直线,DA,与,图形,W,的公,共,点,的,个,数,;,(,2,),过,点,A,作,AE,BD,交,图形,W,于点,E,,,EP,的,延长,线,交,AB,于,点,F,25.,如,图,,点,C,是,以点,O,为,圆心,,,AB,为,直,径,的,半,圆上,的动,点,(,不,与,点,A,C,作,CD,AB,于,点,D,,,E,是,CD,的,中,点,,,连接,AE,并,延长交于点,F,数的,经,验,,,对,线,段,AC,,,CD,,,FD,的,长,度,之,间的,关系,进,行,了,探,究,,,当,a,2,时,,,求,线段,EF,的,长,,,B,重,合,),,AB,6,cm,,,过点,,,连,接,FD,小,腾,根,据,学,习,函,5,/,14,根据以上信息,回答下列问