,#,/,19,B,.,4,个,C,.,3,个,数,学,试卷,第,2,页,(共,6,页),绝,密,启用,前,2020,年四川,省,遂,宁市初,中,毕业,暨,高中阶,段,学校,招,生考试,数学,本试,卷,分,第,卷,(,选,择,题,),和,第,卷,(,非,选,择,题,),两部,分,.,总,分,150,分,.,考,试,时间,120,分,钟,.,第,卷,(,选择,题,,满分,40,分,),注意,事,项,:,答,题,前,,,考,生,务,必,将,自,己的,学,校,、,姓,名,用,0,.,5,毫,米的,黑,色,墨,水,签,字,笔,填,写,在,答,题 卡上,,,并,检,查,条,形,码,粘,贴,是否,正,确,.,准,考,证,号,、,选,择,题使,用,2B,铅,笔,填,涂,在,答,题,卡,对,应,题目,标,号,的,位,置,上,,,非,选,择题 用,0.5,毫,米,黑,色,水,签,字,笔,书写,在,答,题,卡,对,应,框,内,,,超出,答,题,区,城,书,写,的,答,案,无,效,;在,草 稿纸,、,试,题,卷,上,答,题,无,效,.,保,持,卡,面,清,洁,,,不,折,叠,、不,破,损,.,考,试,结,束,后,,将,答题,卡,收,回,.,一、选择题,(,本大题共,10,个小题,每小题,4,分,共,40,分,在每个小题给出 的四个选项中,只有一个符合题目要,求,.),55,1,.,5,的,相,反,数,是(,),A,.,5B,.,5,C,.,1,D,.,1,2,.,已,知,某,种,新,型,感,冒,病,毒,的直,径约,为,0.000,000,823,米,,,将,0.000,000,823,用科,学记,数,法,B,.,8.23,10,7,表示为,A,.,8.23,10,6,3,.,下,列,计,算,正,确,的是,(,),D,.,8.23,10,7,(,),C,.,8.23,10,6,A,.,7,ab,5,a,2,b,C,.,3,a,2,b,2,6,a,4,b,2,1,a,2,1,2,B,.,a,a,2,a,D,.,3,a,2,b,b,3,a,2,4,.,下,列,图,形,中,,,既,是,轴,对,称图,形,,,又,是,中,心,对,称,图,形的是,A,.,等,边,三,角,形,B,.,平,行,四,边形,C,.,矩,形,(,),D,.,正,五,边形,5,.,函数,y,x,2,中,,,自,变,量,x,的取,值,范围是,(,),B,.,x,2,x,1,A,.,x,2,C,.,x,2,且,x,1,D,.,x,2,且,x,1,(,),6,.,关于,x,的,分,式,方,程,m,3,1,有增,根,,,则,m,的值,x,2 2,x,B,.,m,1,C,.,m,3,数学,试,卷,第,1,页,(,共,6,页),A,.,m,2,D,.,m,3,7,.,如,下图,,,在,平,行,四,边,形,ABCD,中,,,ABC,的,平,分,线,交,AC,于点,E,,,交,AD,于点,F,,,交,BE,E,G,CD,的延,长,线,于,点,G,,若,AF,2,FD,,则的值为(,),A,.,1,B,.,1,C,.,2,D,.,3,2334,8,.,二,次函数,y,ax,2,bx,c,a,0,的,图,象,如,下图所,示,,对称,轴,为直线,x,1,,下列,结,论,不正,确,的是(,),A,.,b,2,4,a,c,C,.,a,c,0,B,.,abc,0,D,.,am,2,bm,a,b,(,m,为任,意,实,数,),9,.,如,下,图,,,在,Rt,ABC,中,,,C,90,,,AC,BC,,,点,O,在,AB,上,,,经过点,A,的,O,与,BC,相切,于,点,D,,交,AB,于点,E,,,若,CD,2,,则图,中,阴,影,部,分,面,积,为(,),A,.,4,B,.,2,C,.,2,D,.,1,224,10,.,如,下,图,,,在,正,方,形,ABCD,中,,,点,E,是边,BC,的,中,点,,,连接,AE,、,DE,,,分别,交,BD,、,AC,于点,P,、,Q,,过点,P,作,PF,AE,交,CB,的,延,长,线,于,F,,,下,列,结,论:,AED,EAC,EDB,90,,,AP,FP,,,AE,10,AO,,,若,四,边,形,OPEQ,2,的面,积,为,4,,,则,该,正,方形,ABCD,的面,积,为,36,,,CE,EF,EQ,DE,其中,正,确,的,结,论,有(,),A,.,5,个,D,.,2,个,在,此,卷,上,答,题,无,效,毕业,学,校,姓,名,考,生,号,B.4 个C.3 个绝密启用前2020 年四川省遂宁市初,1,/,19,第,卷,(,非选,择题,,满分,110,分,),注意,事,项,:,1,.,请,用,0.5,毫,米,的,黑,色,墨,水签,字,笔,在,第,卷,答,题,卡,上作,答,,,不,能,答,在,此,试,卷,上,.,二,、,填空题,(,本大题共,5,个小题,每小题,4,分,共,20,分,),1,7,11,.,下,列,各,数,3.141592,6,,,9,,,1.212,212,221,,,,,2,,,2,020,,,3,4,中,,,无,理,数,的个,数,有,个,一,列数,4,、,5,、,4,、,6,、,x,、,5,、,7,、,3,中,,,其,中,众,数,是,4,,,则,x,的值,是,已,知,一,个,正,多,边,形,的内,角,和,为,1 4,4,0,,,则,它,的,一,个外,角,的,度,数,为,度,x,2,x,1,2,x,m,2,x,14,.,若,关,于,x,的不等,式,组,43,有,且,只,有三个,整,数解,,,则,m,的取,值,范围,是,15,.,如,下,图,所,示,,,将,形,状大,小完,全,相,同,的,“,”,按,照,一,定规,律,摆,成,下,列,图,形,,,第,1,幅,图,中,“,”,的,个,数为,a,1,,,第,2,幅,图,中,“,”,的,个数为,a,2,,,第,3,幅,图,中,“,”,的个数为,3,123,n,a,a,aa,2,020,a,,,以,此类推,,,若,2,2,2,2,n,(,n,为,正,整数,),,则,n,的值为,三,计算或解答题,(,本大题共,10,小题,共,90,分,解答应写出必要的文字说 明、证明过程或演算步,骤,),0,1,2,16,.(,本,小,题,满,分,7,分,)计,算:,8,2sin,30,1,2,2,2,020,x,2,4,x,4,x,2,17,.(本,小,题,满分,7,分,),先,化,简,,,x,2,4,x,2,x,2,,,然,后,从,2,x,2,范,围,内,选取,一,个,合,适,的,整,数,作为,x,的值,代,入,求,值,18,.(,本,小,题,满,分,8,分),如下图,,在,ABC,中,,AB,AC,,点,D,、,E,分别是线段,BC,、,AD,的中点,过点,A,作,BC,的,平,行,线,交,BE,的延,长,线,于,点,F,,,连,接,CF,,,求,证,:,BDE,FAE,;,求,证,:,四,边形,ADCF,为,矩形,数,学,试卷,第,3,页(,共,6,页,),19,.(,本,小,题,满,分,8,分),在数,学,实,践,与,综,合,课,上,,,某兴,趣,小,组,同,学,用,航,拍,无,人机,对,某,居,民,小区,的,1,、,2,号,楼,进,行,测,高,实,践,,,如,下,图,为实,践,时,绘,制,的,截,面,图,无人,机,从,地,面点,B,垂直,起,飞,到达点,A,处,,测得,1,号,楼,顶,部,E,的俯,角,为,67,,测得,2,号,楼,顶部,F,的,俯角,为,40,,,此,时,航,拍,无,人,机,的 高度为,60,米,,,已,知,1,号楼,的高,度,为,20,米,,,且,EC,和,FD,分,别,垂直,地,面,于,点,C,和,D,,点,B,为,CD,的,中,点,,,求,2,号,楼,的,高,度,(,结,果,精,确,到,0.1,),(参考数,据,sin,40,0.64,,,cos,40,0.77,,,tan,40,0.84,,,sin,67,0.92,,,cos,67,0.39,,,tan,67,2.36,),20,.(,本,小,题,满,分,9,分),新学,期,开,始,时,,,某,校,九,年,级一,班,的,同,学,为,了,增,添,教,室绿,色,文,化,打,造,温,馨,舒,适,的,学 习环,境,,,准,备,到,一,家,植,物,种植,基,地,购,买,A,、,B,两种,花,苗,据了,解,,,购,买,A,种花苗,3,盆,,,B,种,花,苗,5,盆,,,则,需,210,元,;购买,A,种,花,苗,4,盆,,B,种,花,苗,10,盆,,,则需,380,元,求,A,、,B,两种,花,苗,的,单,价分,别是,多,少,元,?,经,九,年,级,一,班,班,委会,商定,,,决,定,购买,A,、,B,两,种,花,苗,共,12,盆,进,行,搭,配,装,扮,教,室,种,植,基,地,销,售,人,员,为,了支,持,本,次,活,动,,,为,该,班,同学,提,供,以,下,优,惠,:,购,买,几盆,B,种花 苗,,B,种花,苗,每,盆,就,降,价,几,元,,,请,你,为,九,年,级,一,班,的,同学,预,算,一,下,,,本,次,购,买,至少,准,备 多少,钱,?,最,多,准,备,多,少,钱,?,21,.(,本,小,题,满,分,9,分),阅读,以,下,材,料,,,并,解,决,相,应问,题,:,小明,在,课,外,学,习,时,遇,到,这,样一,个,问,题,:,11111 1,1,定,义,:,如,果,二,次,函,数,y,a,x,2,b,x,c,(,a,0,,,a,、,b,、,c,是,常,数,),与,22222,2,21,21 2 1,2,y,a,x,2,b,x,c,(,a,0,,,a,、,b,、,c,是,常,数,),满,足,a,a,0,,,b,b,,,c,c,0,,,则,这两,个,函,数,互,为,“,旋,转,函,数,”,求,函,数,y,2,x,2,3,x,1,的旋,转,函数,,,小明,是,这,样,思,考的,,,1,21 2 1,2,由函数,y,2,x,2,3,x,1,可,知,,,a,2,,,b,3,,,c,1,,,根,据,a,a,0,,,b,b,,,c,c,0,,,111,求,出,a,2,,,b,2,,,c,2,就能,确,定,这,个,函,数,的,旋转,函,数,请思,考,小,明,的,方,法,解,决,下,面问,题,:,(,1,),写,出,函数,y,x,2,4,x,3,的,旋,转,函数,(,2,),若,函数,y,5,x,2,m,1,x,n,与,y,5,x,2,nx,3,互为旋,转函,数,,,求,m,n,2,0,20,的值,(,3,)已知函,数,y,2,x,1,x,3,的图象,与,x,轴交于两点,,与,y,轴交于,点,C,,,点,A,、,B,、,C,关于,原,点,的,对,称,点,分,别是,A,1,、,B,1,、,C,1,,,试,求,证,:,经,过点,A,1,、,B,1,、,C,1,的,二次,函数,与,y,2,x,1,x,3,),互,为,“,旋,转,函,数,”,数学,试,卷,第,4,页,(,共,6,页),第卷(非选择题,满分 110 分)注意事项:二、填空题(本,2,/,19,数,学,试卷,第,6,页,(共,6,页),22,.(,本,小,题,满,分,10,分,),端午,节,是,中,国,的,传,统,节,日,今,年,端,午,节,前,夕,,,遂,宁,市某,食,品,厂,抽,样,调,查,了,河,东,某,居 民区,市,民对,A,、,B,、,C,、,D,四,种,不,同,口,味,粽子,样,品,的,喜,爱,情,况,,,并,将调,查,情,况,绘,制,成,如,下 两幅,不,完,整,统,计,图:,本,次,参,加,抽,样,调,查的,居民,有,人,喜,欢,C,种口,味,粽,子,的,人,数所,占,圆,心,角为,度,根,据,题,中,信,息,补,全,条,形,统,计图,x,结,AB,,,以,AB,为,边,在,第,一象,限内,作正,方,形,ABCD,,直,线,BD,交双,曲,线,y,k,k,0,于,D,、,