2015年秋季学期AE期中考试试题
山东省枣庄东方国际学校2014-2015学年高二上学期期中考试数学试卷及答案
山东省枣庄东方国际学校2014-2015学年高二上学期期中考试数学试题第Ⅰ卷 客观卷(共36分)一、选择题(本大题共12个小题,每小题3 分,共36 分,在每小题给出的四个选项中只有一个是符合题目要求的)1.已知抛物线)0(22>=p px y 的准线与圆05422=--+x y x 相切,则p 的值为A .10B .6C .4D .22.将正方体(如图1所示)截去两个三棱锥,得到图2所示的几何体,则该几何体的左视图为( )A .B .C .D .3.直线210mx y m -++=经过一定点,则该定点的坐标为( )A .()2,1-B .()2,1C .()1,2-D .()1,24.在空间直角坐标系中,O 为坐标原点,设A (12,12,12),B (12,12,0),C (13,13,13),则A .OA ⊥AB B .AB ⊥ACC .AC ⊥BCD .OB ⊥OC5.若P (2,-1)为圆(x -1)2+y 2=25的弦AB 的中点,则直线AB 的方程为 A .x -y -3=0 B .2x +y -3=0C .x +y -1=0D .2x -y -5=06.已知m ,n 是两条不同直线,α,β,γ是三个不同平面,下列命题中正确的是 A .若m ∥α,n ∥α,则m ∥n B .若α⊥γ,β⊥γ,则α∥βC .若m ∥α,m ∥β,则α∥βD .若m ⊥α,n ⊥α,则m ∥n7.如图,在长方体ABCD -A 1B 1C 1D 1中,M ,N 分别是棱BB 1,B 1C 1的中点,若∠CMN =90°,则异面直线AD 1和DM 所成角为A .30°B .45°C .60°D .90°8.已知直线l 过点(-2,0),当直线l 与圆x 2+y 2=2x 有两个交点时,其斜率k 的取值范围是 A .(-22,22) B .(-2,2)C .(-24,24) D .(-18,18)9.在三棱柱ABC -A 1B 1C 1中,各棱长相等,侧棱垂直于底面,点D 是侧面BB 1C 1C 的中心,则AD 与平面BB 1C 1C 所成角的大小是A .30°B .45°C .60°D .90°10.过点M (-2,4)作圆C :(x -2)2+(y -1)2=25的切线l ,且直线l 1:ax +3y +2a =0与l 平行,则l 1与l 间的距离是A .85B .25C .285D .12511.点P (4,-2)与圆x 2+y 2=4上任一点连线的中点轨迹方程是 A .(x -2)2+(y +1)2=1 B .(x -2)2+(y -1)2=4C .(x -4)2+(y -2)2=1D .(x -2)2+(y -1)2=112.设P (x ,y )是圆x 2+(y +4)2=4上任意一点,则-2+-2的最小值为A .26+2B .26-2C .5D .6第Ⅱ卷 主观卷(共36分)二、填空题(本大题共4小题,每小题4分,共16分)13.顺次连结A (1,0),B (1,4),C (3,4),D (5,0)所得到的四边形绕y 轴旋转一周,所得旋转体的体积是________.14.经过点P (1,2)的直线,且使A (2,3),B (0,-5)到它的距离相等的直线方程为________. 15.圆x 2+y 2+Dx +Ey +F =0关于直线l 1:x -y +4=0与直线l 2:x +3y =0都对称,则D =________,E =________.16.已知圆C 过点(1,0),且圆心在x 轴的正半轴上,直线l :y =x -1被圆C 所截得的弦长为22,则过圆心且与直线l 垂直的直线的方程为________.三、解答题(本题共6个小题,每小题8分)17.如图,四棱锥P-ABCD中,底面ABCD为平行四边形,∠DAB=60°,AB=2AD,PD⊥底面ABCD.(1)证明PA⊥BD;(2)设PD=AD=1,求棱锥D-PBC的高.18.如图,矩形ABCD的两条对角线相交于点M(2,0),AB边所在直线的方程为x-3y-6=0,点T(-1,1)在AD边所在直线上.(1)求AD边所在直线的方程;(2)求矩形ABCD外接圆的方程.19.已知圆的半径为10,圆心在直线y=2x上,圆被直线x-y=0截得的弦长为42,求圆的方程.20.如图,几何体E-ABCD是四棱锥,△ABD为正三角形,CB=CD,EC⊥BD.(1)求证:BE=DE;(2)若∠BCD=120°,M为线段AE的中点,求证:DM∥平面BEC.21.在平面直角坐标系xOy中,已知圆C1:(x-4)2+(y-5)2=4和圆C2:(x+3)2+(y-1)2=4. (1)若直线l 1过点A (2,0),且与圆C 1相切,求直线l 1的方程;(2)直线l 2的方程是x =52,证明:直线l 1上存在点P ,满足过P 的无穷多对互相垂直的直线l 3和l 4,它们分别与圆C 1和圆C 2相交,且直线l 3被圆C 1截得的弦长与直线l 4被圆C 2截得的弦长相等.22.如图已知三棱柱ABC -A 1B 1C 1中,D 、E 分别是AB 、BB 1的中点.(1)证明:BC 1∥面A 1CD ;(2)设AA 1=AC =CB =2,AB =22,求三棱锥C -A1DE 的体积.2014-2015学年度山东省峄城东方国际中学高二第一学期期中考试数学试题参考答案一、选择题D 、 D 、 A 、 C 、 A 、 D 、 D 、 C 、 C 、 D 、 A 、 B 二、填空题13.184π3 14.4x -y -2=0或x =1 15.6 -2 16.x +y -3=0三、解答题17.(1)证明:因为∠DAB =60°,AB =2AD ,由余弦定理得BD =3AD . 从而BD 2+AD 2=AB 2,故BD ⊥AD .又PD ⊥底面ABCD ,可得BD ⊥PD . 所以BD ⊥平面PAD .故PA ⊥BD .(2)如图,作DE ⊥PB ,垂足为E .已知PD ⊥底面ABCD ,则PD ⊥BC .由(1)知BD ⊥AD , 又BC ∥AD ,所以BC ⊥BD .故BC ⊥平面PBD ,所以BC ⊥DE .则DE ⊥平面PBC . 由题设知PD =1,则BD =3,PB =2.根据DE·PB =PD·BD ,得DE =32,即棱锥D -PBC 的高为32.18.解:(1)因为AB 边所在直线的方程为x -3y -6=0,且AD 与AB 垂直,所以直线AD 的斜率为-3.又因为点T (-1,1)在直线AD 上,所以AD 边所在直线的方程为y -1=-3(x +1),即3x +y +2=0.(2)由⎩⎪⎨⎪⎧x -3y -6=03x +y +2=0,解得点A 的坐标为 (0,-2).因为矩形ABCD 两条对角线的交点为M (2,0),所以M 为矩形ABCD 外接圆的圆心.又r =|AM|=-2++2=22.所以矩形ABCD 外接圆的方程为(x -2)2+y 2=8.19.解:方法一:设圆的方程是(x -a )2+(y -b )2=10.因为圆心在直线y =2x 上, 所以b =2a . ①解方程组⎩⎪⎨⎪⎧x -y =0,-2+-2=10,得2x 2-2(a +b )x +a 2+b 2-10=0, 所以x 1+x 2=a +b ,x 1·x 2=a 2+b 2-102.由弦长公式得2·+2-2+b 2-=42,化简得(a -b )2=4. ② 解①②组成的方程组,得a =2,b =4,或a =-2,b =-4.故所求圆的方程是(x -2)2+(y -4)2=10,或(x +2)2+(y +4)2=10.方法二:设圆的方程为(x -a )2+(y -b )2=10,则圆心为(a ,b ),半径r =10,圆心(a ,b )到直线x -y =0的距离d =|a -b|2.由弦长、弦心距、半径组成的直角三角形得d 2+(422)2=r 2,即-22+8=10,所以(a -b )2=4.又因为b =2a ,所以a =2,b =4,或a =-2,b =-4.故所求圆的方程是(x -2)2+(y -4)2=10,或(x +2)2+(y +4)2=10.20.解:(1)设BD 中点为O ,连接OC ,OE ,则由BC =CD 知,CO ⊥BD ,又已知CE ⊥BD ,所以BD ⊥平面OCE .所以BD ⊥OE ,即OE 是BD 的垂直平分线,所以BE =DE .(2)取AB 中点N ,连接MN ,DN ,∵M 是AE 的中点,∴MN ∥BE ,∵△ABD 是等边三角形,∴DN ⊥AB .由∠BCD =120°知,∠CBD =30°,所以∠ABC =60°+30°=90°,即BC ⊥AB ,所以ND ∥BC ,所以平面MND ∥平面BEC ,故DM ∥平面BEC .21.解:(1)若直线斜率不存在,x =2符合题意;当直线l 1的斜率存在时,设直线l 1的方程为y =k (x -2),即kx -y -2k =0, 由条件得|4k -5-2k|k 2+1=2,解得k =2120,所以直线l 1的方程为x =2或y =2120(x -2),即x =2或21x -20y -42=0.(2)由题意知,直线l 3,l 4的斜率存在,设直线l 3的斜率为k ,则直线l 4的斜率为-1k,设点P 坐标为(52,n ),互相垂直的直线l 3,l 4的方程分别为:y -n =k (x -52),y -n =-1k (x-52),即kx -y +n -52k =0,-1k x -y +n +52k=0, 根据直线l 3被圆C 1截得的弦长与直线l 4被圆C 2截得的弦长相等,两圆半径相等.由垂径定理得:圆心C 1到直线l 3与圆心C 2到直线l 4的距离相等.有⎪⎪⎪⎪4k -5+n -52k k 2+1=⎪⎪⎪⎪3k -1+n +52k 1k 2+1,化简得n k n -=-221)25(或)21(21)21(n n k n +-=--=+ 关于k 的方程有无穷多解,有021=+n ,即21-=n ,即直线2l 上满足条件的点P 是存在的,坐标是(21,25-) 22.解:(1)连结AC 1交A 1C 于点F ,则F 为AC 1的中点,又D 是AB 中点,连结DF ,则BC 1∥DF ,因为DF ⊂平面A 1CD ,BC 1⊄平面A 1CD ,所以BC 1∥平面A 1CD .(2)因为ABC -A 1B 1C 1是直三棱柱,所以AA 1⊥CD ,由已知AC =CB ,D 为AB 中点,所以,CD ⊥AB ,又AA 1∩AB =A ,于是CD ⊥平面ABB 1A 1,由AA 1=AC =CB =2,AB =22得,∠ACB =90°,CD =2,A 1D =6,DE =3,A 1E =3,故A 1D 2+DE 2=A 1E 2,即DE ⊥A 1D ,所以VC -A 1DE =13×12×6×3×2=1.。
江苏省盐城市2015届高三年级第一学期期中考试数学试题
江苏省盐城市2015届高三年级第一学期期中考试数学试题(总分160分,考试时间120分钟)一、填空题:本大题共14小题,每小题5分,计70分.不需写出解答过程,请把答案写在答题纸的指定位置上. 1. 若集合{}0,1A =,集合{}0,1B =-,则AB = ▲ .2.命题“若a b >, 则22a b>”的否命题为 ▲ .3.函数2()sin f x x =的最小正周期为 ▲ . 4.若幂函数()()f x x Q αα=∈的图象过点(2,2,则α= ▲ . 5.若等比数列{}n a 满足23a =,49a =,则6a = ▲ .6.若,a b 均为单位向量,且(2)⊥-a a b ,则,a b 的夹角大小为 ▲ .7.若函数12()21x xmf x ++=-是奇函数,则m = ▲ . 8.已知点P 是函数()cos (0)3f x x x π=≤≤图象上一点,则曲线()y f x =在点P 处的切线斜率的最小值为 ▲ .9.在等差数列}{n a 中,n S 是其前n 项和,若75=+4S S ,则93S S -= ▲ . 10.在ABC ∆中,,,a b c 分别为角,,A B C 的对边,若4a =,3b =,2A B =,则sin B = ▲ .11.如图,在等腰ABC ∆中,=AB AC ,M 为BC 中点,点D 、E 分别在边AB 、AC 上,且1=2A D DB ,=3AE EC ,若90DME ∠=,则cos A = ▲ .12.若函数2()2f x x a x =+-在(0,)+∞上单调递增,则实数a 的取值范围是 ▲ . 13. 设函数211*3224()n n y x x n N --=-⨯+⨯∈的图象在x 轴上截得的线段长为n d ,记数列{}n d 的前n 项MEDAB第11题和为n S ,若存在正整数n ,使得()22log 118m n n S -+≥成立,则实数m 的最小值为 ▲ .14.已知函数32|2|(1)()ln (1)x x x x f x x x ⎧--+<=⎨≥⎩,若命题“t R ∃∈,且0t ≠,使得()f t kt ≥”是假命题,则实数k 的取值范围是 ▲ .二、解答题:本大题共6小题,计90分.解答应写出必要的文字说明,证明过程或演算步骤,请把答案写在答题纸的指定区域内. 15. (本小题满分14分)已知函数()sin cos (0)f x x a x ωωω=+>满足(0)f ()f x 图象的相邻两条对称轴间的距离为π.(1)求a 与ω的值; (2)若()1f α=,(,)22ππα∈-,求5cos()12πα-的值.16. (本小题满分14分)设函数2lg(43)y x x =-+-的定义域为A ,函数2,(0,)1y x m x =∈+的值域为B . (1)当2m =时,求A B ;(2)若“x A ∈”是“x B ∈”的必要不充分条件,求实数m 的取值范围.17. (本小题满分14分)设△ABC 的面积为S ,且20S AB AC ⋅=. (1)求角A 的大小;(2)若||3BC =,且角B 不是最小角,求S 的取值范围.18. (本小题满分16分)如图是一块镀锌铁皮的边角料ABCD ,其中,,AB CD DA 都是线段,曲线段BC 是抛物线的一部分,且点B 是该抛物线的顶点,BA 所在直线是该抛物线的对称轴. 经测量,AB =2米,3AD =米,A B A D ⊥,点C 到,AD AB 的距离,CH CR 的长均为1米.现要用这块边角料裁一个矩形AEFG (其中点F 在曲线段BC 或线段CD 上,点E 在线段AD 上,点G 在线段AB 上). 设BG 的长为x 米,矩形AEFG 的面积为S 平方米. (1)将S 表示为x 的函数;(2)当x 为多少米时,S 取得最大值,最大值是多少?19. (本小题满分16分)设数列{}n a 的前n 项和为n S ,且21132(2,)n n n S S S n n n N *-+++=+≥∈. (1)若{}n a 是等差数列,求{}n a 的通项公式; (2)若11a =.① 当21a =时,试求100S ;② 若数列{}n a 为递增数列,且3225k S =,试求满足条件的所有正整数k 的值.C D EFG R第18题H20. (本小题满分16分)已知函数()x f x e =,()g x x m =-,m R ∈.(1)若曲线()y f x =与直线()y g x =相切,求实数m 的值; (2)记()()()h x f x g x =⋅,求()h x 在[]01,上的最大值; (3)当0m =时,试比较()2f x e -与()g x 的大小.盐城市2015届高三年级第一学期期中考试数学参考答案一、填空题:本大题共14小题,每小题5分,计70分.1. {}0,1,1-2. 若a b ≤, 则22a b≤ 3. π 4. 12-5. 276. 3π7. 28. 9. 12 10. 11. 15 12. [4,0]- 13. 13 14. 1(,1]e二、解答题:本大题共6小题,计90分.解答应写出必要的文字说明,证明过程或演算步骤,请把答案写在答题纸的指定区域内.15.解:(1)(0)f =∴sin 0cos0a +a = ……………2分∴()s i n3c o s 2s i n ()3f x x x x πωωω==+, ……………4分 ()f x 图象的相邻两条对称轴间的距离为π,∴22||T ππω==,∴||1ω=,又0ω>,所以1ω=. ……………6分 (2)()1f α=,∴1sin()32πα+=, ……………8分(,)22ππα∈-,∴5(,)366πππα+∈-,∴36ππα+=,即6πα=-, ……………10分∴57cos()cos1212ππα-=,又7cos cos()1234πππ=+,∴5cos()cos cos sin sin 123434πππππα-=⋅-⋅=. …………14分 16.解:(1)由2430x x -+->,解得13x <<,所以(1,3)A =, …………2分又函数21y x =+在区间(0,)m 上单调递减,所以2(,2)1y m ∈+,即2(,2)1B m =+, …………4分 当2m =时,2(,2)3B =,所以(1,2)A B =. …………6分(2)首先要求0m >, …………8分而“x A ∈”是“x B ∈”的必要不充分条件,所以B A Ø,即2(,2)(1,3)1m +?, …………10分 从而211m ≥+, …………12分 解得01m <≤. …………14分 17.解:(1)设ABC ∆中角,,A B C 所对的边分别为,,a b c,由20S AB AC +⋅=,得12sin cos 02bc A A ⨯+=,即sin 0A A +=, …………2分所以tan A =, …………4分又(0,)A π∈,所以23A π=. …………6分(23BC =,所以a =,sin sin b cB C ==, 所以2sin ,2sin b B c C ==, …………8分从而1sin sin sin()23S bc A B C B B π===- …………10分11cos 2sin )2))246B B B B B B π-=--=+-, …………12分又5(,),2(,)63626B B πππππ∈+∈,所以S ∈. …………14分(说明:用余弦定理处理的,仿此给分) 18.解:(1)以点B 为坐标原点,BA 所在直线为x 轴,建立平面直角坐标系. …………2分设曲线段BC 所在抛物线的方程为22(0)y px p =>,将点(1,1)C 代入,得21p =, 即曲线段BC的方程为1)y x =≤≤. …………4分又由点(1,1),(2,3)C D 得线段的方程为21(12)y x x =-≤≤. …………6分 而2GA x =-,所以),01,(21)(2),1 2.x x S x x x ⎧-<≤⎪=⎨--<<⎪⎩ …………8分(2)①当01x <≤时,因为1322)2S x x x =-=-,所以112232S xx -'=-=,由0S '=,得23x =, …………10分 当2(0,)3x ∈时,0S '>,所以S 递增;当2(,1)3x ∈时,0S '<,所以S 递减,所以当23x =时,max S =; …………12分 ②当12x <<时,因为259(21)(2)2()48S x x x =--=--+,所以当54x =时,max 98S =; …………14分综上,因为98>54x =米时,max 98S =平方米. …………16分(说明:本题也可以按其它方式建系,如以点A 为坐标原点,AD 所在直线为x 轴,建立平面直角坐标系,仿此给分)19.解:(1)由等差数列求和公式211(1)()222n n n d dS na d n a n -=+=+-, 11n n n S S S -+∴++222111(1)()(1)()(1)()(1)222222d d d d d dn a n n a n n a n =-+--++-+++-+21(32)3(),22d dn a n =++- ……………2分 ∴222113(32)3()3()322222d d d dn a n n a n d n ++-=+-+=+, ∴133,,222d da d =-=,解得12,1d a ==,∴ 21n a n =-; ……………4分 (说明:也可以设2n S an bn =+;或令2,3n n ==,先求出首项1a 与公差d ) (2)由21132(2)n n n S S S n n -+++=+≥,得2123(1)2n n n S S S n ++++=++ , ……………6分∴1263(2)n n n a a a n n ++++=+≥, ∴10012345679899100()()()S a a a a a a a a a a =++++++++++11(6236983)33100002=+⋅++⋅+⋅=. ………………8分(说明:用21a =,利用分组方法求和,类似给分.)(3)设2a x =,由21132(2)n n n S S S n n -+++=+≥,得12314S S S ++=与23429S S S ++=,∴1233214a a a ++=,∴3112a x =-,∴123433229a a a a +++=,∴44a x =+, ……………10分又2123(1)2n n n S S S n ++++=++,∴1263(2)n n n a a a n n ++++=+≥,∴1163(3)n n n a a a n n -+++=-≥, 相减得216(3)n n a a n +--=≥, ∴5266a a x =+=+,数列{}n a 为递增数列,∴12345a a a a a <<<<,解得71133x <<, ……………12分由312345678932313()()()k k k k S a a a a a a a a a a a a --=++++++++++++,∴3112(6436(32)3)(1)2k S x k k =-+⋅++-+-,∴2393225k S k x =-+=, ……………14分∴27119222(,)33x k =-∈,解得5k =. ……………16分20.解:(1)设曲线()x f x e =与()g x x m =-相切于点()00,P x y ,由()xf x e '=,知0=1x e ,解得00x =, ……………2分 又可求得点P 为()01,,所以代入()g x x m =-,得1m =-. ……………4分 (2)因为()()xh x x m e =-,所以()()()(1),[0,1]xxxh x e x m e x m e x '=+-=--∈.①当10m -≤,即1m ≤时,()0h x '≥,此时()h x 在[]01,上单调递增,所以()()()max 11h x h m e ==-; ……………6分 ②当011m <-<即12m <<时,当()01x m ∈-,时,()0h x '<,()h x 单调递减, 当()1,1x m ∈-时,()0h x '>,()h x 单调递增,()0h m =-,()()11h m e =-.(i)当()1m m e -≥-,即21em e ≤<-时,()()max 0h x h m ==-; (ii) 当()1m m e -<-,即11em e <<-时,()()()max 11h x h m e ==-; ……………8分③当11m -≥,即2m ≥时,()0h x '≤,此时()h x 在[]01,上单调递减,所以()()min 0h x h m ==-. 综上,当1e m e <-时,()()max 1h x m e =-;当1em e ≥-时,()max h x m =-. ……………10分(3)当0m =时,()22=x f x e ee --,()g x x =,①当0x ≤时,显然()()2f x eg x ->;②当0x >时,()222ln =ln x f x ex e e e ---=,()ln ln g x x =,记函数()221=ln ln x x x ex e x eϕ--=⨯-, ……………12分 则()22111=e x x x e e x xϕ-'⨯-=-,可知()x ϕ'在()0,+∞上单调递增,又由()10ϕ'<,()20ϕ'>知,()x ϕ'在()0,+∞上有唯一实根0x ,且012x <<,则()02001=0x x e x ϕ-'-=,即0201x e x -=(*), 当()00,x x ∈时,()0x ϕ'<,()x ϕ单调递减;当()0+x x ∈∞,时,()0x ϕ'>,()x ϕ单调递增, 所以()()0200=ln x x x e x ϕϕ-≥-, ……………14分结合(*)式021x ex -=,知002ln x x -=-, 所以()()()22000000001211=2=0x x x x x x x x x ϕϕ--+≥+-=>,则()2=ln 0x x e x ϕ-->, 即2ln x ex ->,所以2x ee x ->.综上,()()2f x eg x ->. ……………16分(说明:若学生找出两个函数()2f x y e -=与()y g x =图象的一条分隔线,如1y x =-,然后去证()21f x e x -≥-与()1x g x -≥,且取等号的条件不一致,同样给分)。
浙江省新昌中学2015届高三上学期期中考试语文试题
浙江省新昌中学2015届高三上学期期中考试语文试题高三2011-11-22 22:05浙江省新昌中学2015届高三上学期期中考试语文试题一.语言文字运用(共36分,其中选择题每小题3分)1.下列词语中,各对加点字的读音都不相同的一项是( )A.复辟/媲美翩跹/乔迁款识/残羹冷炙B.缔造/真谛烙印/络绎贫瘠/声名狼藉C.绯闻/斐然空旷/粗犷筵席/偃旗息鼓D.伺机/后嗣揶揄/龋齿倜傥/痛哭流涕2.下列各句中,没有错别字的一项是( )A.我将怀着敬畏之心,仰望壮丽的署光全景,与此同时,太阳唤醒了沉睡的大地。
B.妄自菲薄是一条毒蛇,它在不知不觉中啮噬着我们的心灵,吮吸着滋润生命的血液,同时注入厌世和绝望的毒液。
C.秋风忽至,再有一场早霜,落叶或飘摇歌舞或坦然安卧,满园中播散着熨贴而微苦的味道。
D.文化传统的变化无论如何总是缓慢的、渐进的,不会一蹴而就,既使在社会急剧变幻的革命时期也是如此。
3.依次填入下列横线处的词语,最恰当的一组是( )①总有无数平凡的人,以诚实的品格着社会的良知。
②艺术真实的使命可以暂不现实生活的法则,因为虚构是小说家的特权。
③悲悯情怀了贫富与阶级、国家与民族的界限,使人们关注那些苦难中的同类。
A.守护理会超越 B.守护理解超脱C.守候理会超脱 D.守候理解超越4.下列各句中,加点的词语运用错误的一项是( )A.纵观当下国内众多谍战题材作品,信仰被抽象成一个特征,信仰什么、为什么信仰都不再重要,浓墨重彩渲染的是由执著信仰而产生的力量。
B.形形色色的“赠品经济”让商家绞尽了脑汁:虽说同是变相让利,可戏法人人会变,[来源:Z|xx|]各有巧妙不同,只有棋高一着,才能在竞争中占得先机。
C.民众对司法的一些负面情绪,固然跟司法腐败有莫大关系,但确实也有部分无良媒体,从非专业角度对案件进行了情绪化炒作,导致负面消息甚嚣尘上。
D.风骨不仅是文艺批评的一个标准,也代表着文艺作品的品质,但遗憾的是,近些年来,风骨不再成为多数作家的自觉追求,风骨之说颇有些大音希声。
浙江省温州市第六十一中学2015届高三第一学期期中考试英语试题
浙江省温州市第六十一中学2015届高三第一学期期中考试英语试题第一部分:英语知识应用(共两节,满分30分)第一节:单项填空(共20小题,每小题0.5分,满分10分)1. ---I'm sorry I made a mistake!--- _____. Nobody is perfect.A. Take your timeB. You’re rightC. Whatever you sayD. Take it easy2. The Professor considers ____ no good _____ without understanding.A. it; to readB. it; readingC. that; to readD. that; reading3. The new survey shows that the number of students ________ computer games has been increasing in recent years.A.devoted to B.related to C.connected to D.addicted to4. Students in Senior 3 are under _____ great stress, because no one will take ____ risk of failng in the college entrance examinations.A. a; theB. the; /C. a; aD. /; the5. I haven't seen ________ Mary since I came here.A.as lovely a girl as B.so a lovely girl asC.girl as lovely as D.as a lovely girl as6. He’s one of those early birds. It’s __________ of him to get up early.A. flexibleB. humorousC. rudeD. typical7. Snooker superstar Ding Junhui owes his great success to many people, his father _______.A. in turnB. in particularC. in returnD. in peace8. They had a wonderful holiday, ______ bad weather.A. because ofB. due toC. in spite ofD. on behalf of9. – I ____ to go for a walk.-- But I _____ going shopping.A. would like; feel likeB. feel like; feel likeC. feel like; would likeD. would like; would like10. Without electricity, people’s life ________ quite different today.A. would have beenB. should have beenC. would beD. could have been11. It is very hot in Chongqing this summer. ________air-conditioners have been sold since thetemperature is high.A.Large quantities of B.A large quantityC.A great deal of D. A great many of12. Having walked in the desert for several days, they felt exhausted, but they had tofind a pool before the water in the bottle ___________ .A. put outB. let outC. ran outD. used up13.Alice’s father always brings her a nice gift ________ he returns home from hisbusiness trip.A. by the timeB. all the timeC. every timeD. in the time14. ______with the size of the whole earth, the biggest ocean does not seem big at all.A. CompareB. When comparingC. ComparingD. When compared15. Unfortunately, the computer system ________ suddenly while they were searching for someinformation on the Internet.A. broke upB. broke downC. broke awayD. broke out16. I can ______ the house being untidy, but I hate it if it's not clean.A.come up with B.put up with C.turn to D.stick to17. --- What time is it?--- I have no idea. But just a minute. I ________ it for you.A. checkB. checkedC. will checkD. would check18. His laziness ________ his failure; that is to say, his failure _______ his laziness.A. resulted from; resulted inB. resulted in; resulted fromC. as a result of; as a resultD. as a result; as a result of19. --- How did you like Nick’s performance last night?--- To be honest, his singing didn’t ________ to me much.A. appealB. belongC. referD. occur20. It is required by law that a driving test _______ taken before a man gets a license.A. wasB. beC. wereD. is第二节:完形填空(共20小题;每小题1分,满分20分)Have you ever considered what it would be like if you are not able to smile? I hadn't __21__ that, up until a few months ago, when I found that I __22__ couldn't. Well, I'm exaggerating (夸张) a little bit ... I __23__ smile, but only with one side of my face!I went to the__24_, and was diagnosed(诊断) with Bell's Palsy—a disease of the muscles on one side of the face. As you could __25__,this was quite a shock to me,and made me very __26__.Although this was a major bomb that was dropped on my life, my story is not about how __27__ life is, but about how I face the sudden __28__ falling on me.Anyway, __29__ is a part of everyday life for me. “Losing” half my face temporarily caused me to think “What is a smile?”According to the dictionary,a smile is a __30__ expression for pleasure, characterized(特征是) by the turning up of the corners of the mouth,__31__ what about the cause? What is __32__ the smile that causes us to show this expression?After __33__ about this for a while, I came up with the __34__ that a smile is not only characterized by the upturning of the corners of the mouth, but also by what a person does, says and thinks. This gave me hope, as I __35__ that smiling is not just an outward expression, but an inward __36__.With this in mind, I set about __37__ how to smile with my life through my __38__,not just with my face.__39__,sometimes I send my friends Smile Cards with a chocolate bar or bookmark, letting them __40__ a true smile.21.A. thought about B.stuck to C.fought for D.dreamed of22.A. certainly B.actually C.hardly D.obviously23.A. needed B.would C.should D.could24.A. doctor B. nursery house C.government D.bookstore25.A. ask B.behave C.plan D.imagine26.A. excited B.puzzled C.upset D.ashamed27.A. hard B.boring C.short D.interesting28.A. fortune B.challenge C.duty D.job29.A. sleeping B.working C.smiling D. eating30.A. facial B.body C.mental D.happy31.A. because B.so C.but D.or32.A. behind B.against C.before D.towards33.A. working B.thinking C.reading D.speaking34.A. agreement B.conclusion C.announcement D.condition35.A. doubted B.hoped C.insisted D.realized36.A. decoration B.attitude C.pattern D.attraction37.A. learning B.suggesting C.consulting D.predicting38.A. speeches B.promises C.actions D.opinions39.A. In fact B.For example C.As a result D.By the way 40.A. discover B.remove C.convey D.experience第二部分阅读理解(第一节20小题,第二节5小题,满分50分)第一节:阅读下列材料,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题纸上将该选项标号涂黑。
职业高二上学期期中考试英语试题2015
高二职业班英语期中考试试题班级:姓名:一.语音知识:从ABCD四个选项中找出其划线部分与所给单词划线部分读音相同的选项(共5分,每小题1分)1.death A.areas B.disease C.health D.breathe2.within A.three B.either C.thirty D.health3.iced A.offered B.allowed C.tasted D.washed4.learn A.dear B.wear C.heard D.hear5.great A.creat B.break C.idea D.deal二.完形填空(共10题,20分)Beijing will ban smoking in most __6__places starting from May 1 ---- a big step toward tobacco control in a nation of 350 million __7__. The cap ital will be the first to ban smoking in all restaurants, offices and schools, b ars, Internet cafes, hotels, offices, holiday resortsand all 8__ areas of hospit als. "Hotels must also have rooms for non-smokers," said Cui Xiaobo, a to bacco control expert who helped draft the new rule. But it has not yet been __9__how to deal with smokers __10__ the new rule. "There are proposals to fine individuals up to 200 yuan, but it remains to be discussed" said Cui . For Chinese, smoking is part of a meal, said Zhao Yingqi, __11__ of Jing weilou Restaurant in the city's downtown. His __12__ has about 20 non-smoking tables compared to the 400 plus tables with glass or steel ashtrays on __13__. "It's not a bad __14__to have non-smoking restaurants," said a 40-year-old smoker surnamed Xie who was dining at the restaurant. The m ajority of diners __15__the new rule.6.A.public B.personal C.open mon7.A.smoking B.smokes C.smokers D.smoker8.A.indoor B.outdoor C.outdoors D.indoors9.A.done B.konwn C.made D.decided10.A.breaking B.doing C.making D.keeping11.A.customer B.manager C.except D.host12.A.room B.restaurant C.hotel D.hospital13.A.no B.both C.every D.each14.A.things B.idea C.restaurant D.office15.A.support B.disagree C.for D.against三阅读理解(每题2分,共30分)ARobinson was born in a poor family. At seven, he had to pick coal in a dese rted mine near his home, and then he sold what he had picked and earned a few coins to help his parentHe had no schooling, for being so poor, how c ould they afford school fees? When he was fifteen, he worked as a servant in a school. Seeing other children studying in the classroom, he felt sorry for himself. In the day time, after he finished sweeping and cleaning, he cou ld stand by the window outside the classroom trying to catch what the teac her said. At night, he tried his best to remember what he learned during the day. He worked so hard at the lesson that he sometimes had only three or f our hours' sleep. The more he learned, the greater interest he had. A maths t eacher discovered him and came to like this diligent (勤奋的)boy and allowed him to sit at the back of the class. In one exam, he ca me first in grade in the whole school. He would have been given the schola rship if he had been a regular student of the school. Robinson struggled thr ough six long years with his study of maths and wrote several articles whic h caught the attention of some university professors. They appreciated (欣赏) his diligence as well as his cleverness. To give him the better chance, t hey hired him as a librarian (图书管理员) and offered him free guidance. Robinson was filled with joy, for he fel t that before him there was a broad road leading to success.、16.When he was very small, Robinson didn't go to school because _____ .A. there was no school thereB. his family was poorC. the school didn't wa nt himD. he didn't like school17. When he was a teenager, Robinson _____.A. went to schoolB. left schoolC. lived in a schoolD. worked in a schoo18. In the second paragraph of the passage, the word “catch” means ____ _____.A. listen toB. rememberC. controlD. hear and understand19. At the end of the story, Robinson was sure that he ____ .A. would no longer worry about his future lifeB. would work in the librar y for a long timeC. would become successful in businessD. would beco me successful in learning20. The best title for the passage is _____.A. Diligence Makes a SuccessB. Cleverness Makes a SuccessC. A Boy' s Early lifeD. A Boy's Early EducationBEating in space is different from eating on earth. The food that astronauts c arry with them does not look like the food you eat. Some food is carried i n closed bags. It is cooked and frozen befo r e the astronauts get it. All th e water is removed from the food. In the spaceship, the astronaut puts the w ater into the food bag. He “shoots” hot or cold water into the food bag wit h a special gun. He eats the food through a small hole in the bag. Other foo ds come in bite sizes. The astronaut puts a whole piece in his mouth at on ce. There can be no crumbs(碎屑). Crumbs would float around the spaceship and ge t in the way. Meat a nd cake often come in bite-sized pieces. Astronauts cannot drink water fr om open cups. The water would float in drops in the a i r.T he water is put in the special gun. The astronaut shoots the water into his mouth. Eating in spa ce is not easy. Astronauts must learn to eat this way.21. Some space food is carried in ___.A. closed bagsB. opened bagsC. closed boxesD. opened boxes22. It is implied(暗示) in this passage that ___.A. you get much hungrier in space than you do on earthB. you cannot have water to drink in spaceC. astronauts must learn many new and different thi ngsD. you cannot eat anything in a spaceship23. Why can’t astronauts drink water from open cups?A. The water would float out of the open cups.B. The water would spill all over their food.C. Crumbs would float in the cups.D. The cups would float in the air.24. The main idea of the whole story is that ___.A. there is more food and water in space than on earthB. eating and drinkin g in space is a special problemC. astronauts can never eat or drink in a spa ceshipD. some food is carried in closed bags25. Which of the following does the story lead you to believe?A. food for astronauts must be made in a special way.B. All meat on eart h comes in bite-sized pieces.C. Astronauts will only eat cakes made from crumbs.D. Astronauts have to go hungry in a spaceshipCAt the other end of Africa is a desert. Y e t p eople who live there managed to make a home and live in agreement with the land. The 4 people are the Bu shmen, whose home is the Kalahari Desert of South Africa. They make thei r living through their knowledge of a difficult and dangerous home. Duri ng the few days that it rains in the Kalahari, the Bush m en have no troubl e finding food. All kinks of plants and flowers grow in the desert. Hungry an imals from surrounding areas move into the desert. Hunting is easy. They canfollow animal tracks (踪迹) for days. Then they shoot their game (物) with poisoned arrows (毒箭). If the animal is only wounded, they will run after it for days under the hot sun. A Bushman can also find water where no one else can. Somet imes he will dig through the sand, looking for the water seeping (渗出) in after the rains where he knows. Then he puts a hollow reed (空芦苇)into the ground and sucks the water up through the reed, after that he will draw it out of sand. And then he will hide a kind of egg shell in the sand and remember where he has hidden it. If another Bushman f inds the shell, he will not use it---even if he is dying of thirst. He knows that another depends on the water being there. Nearly everything the Bushm en use comes from the desert. But it takes knowledge and skill to put every thing to use. Only with this knowledge and skill can the Bushmen live in such a harsh (的)homeland.26. What is the main idea of the paragraph? A. There is a desert in South Afri ca. B. Bushmen live a hard life in the desert. C. Bushmen live a life by their own way. D. Bushmen don’t know how to live in the desert.27. Why do Bushmen hunt easily after the rains? A. Because the animals d on’t move any more.B. Because the animals around the area come here to eat the plants in the desert after the rains. C. Because when it rains, the ani mals hide in some places. D. Because many animals are very weak after the rains.28. How can a Bushman find water in the desert after the rains? A. They dig through the sand where the water will flow slowly and then put a reed in the sand, sucking the water up. B. After the rains he can find a small river. C. There are many holes in the sand, so he can easily find it. D. He will dig a well after the rains.29. Why does a Bu s h man hide the egg s h e l l i n t h e sand after he f inds water? A. Because he wants to have a bird. B. Because the Bushmen use the shell to gather and store some water in the sand. C. Because there is no water there. D. Because he leaves it to others.30. The best title of this passage is “____”. A. The life in the desert B. Ho w to find water and when to huntC. How Bushmen live in the desert D. Th e Kalahari Desert of South Africa四从B栏中为A栏找一个同义伙伴。
2015年秋季学期AE期中考试试题
2015年秋季学期《After Effects CS4案例教程》期中考试试题14计算机班姓名总分一、选择题(每道题只有一个正确的答案,请把答案写在下面相应的表格内,每题2分,共40分)1.创建合成的组合键是?()A.Ctrl+N B. Ctrl+O C. Ctrl+I D. Ctrl+A2.Composition Settings(合成设置)界面中,哪一项设置可锁定画面的宽高比?()A. Pixel Aspect RateB. ResoLutionC. Lock Aspect Ratio to 4:3(1.33)D. Frame Rate3.输出模块中,哪项设置决定输出文件的扩展名?()A. FormatB. Post-Render ActionC. Format OptionsD. Stretch4. PAL制影片的帧速率是?()A. 24帧/秒B. 25帧/秒C. 29.97帧/秒D. 30帧/秒5.8bit位深度的含义是?()A. 每个通道使用2的4次方量化B. 每个通道使用2的8次方量化C. 每个通道使用8的2次方量化D. 每个通道使用4的2次方量化6. 关于视频制式的使用,下列描述那些是正确的?()A. 美国,加拿大采用SECAM制式B. 日本采用PAL制式C. 欧洲采用NTSC制式D. 中国采用PAL制式7. After Effects中同时能有几个工程(Project)处于开启状态()A. 有2个B. 只能有1个C. 可以自己设定D. 只要有足够的空间,不限定项目开启的数目8. After Effects属于下列哪种工作方式的合成软件?()。
A. 使用流程图节点进行工作B. 面向层进行工作C. 使用轨道进行工作D. 综合上面所有的工作方式9. After Effects使用的时间编码是?()。
A. SMPTEB. Drop FrameC. NTSCD. PAL 10. 可以带有Alpha通道色彩设定是?()A. 8 bit色彩深度B. 16 bit色彩深度C. 24 bit色彩深度D. 32 bit色彩深度11.After Effects 对合成进行预览使用小键盘的哪个键?()A. 0B. 1C. 2D. 312.视频编辑中,最小单位是()。
北师大实验中学2015-2016学年高一上学期期中考试物理试题
第I卷
一、 本题共 15 小题, 在每小题给出的四个选项中, 只有一项是符合题意的. (每 小题 3 分,共 45 分) 1.如图所示,某飞行员跳伞后飞机上的甲人和地面上的乙 人观察跳伞飞行员的运动后,引发了对跳伞飞行员运动情况 的争论,下列说法正确的是( ) A.甲、乙两人的说法中必有一个是错误的 B.他们的争论是由于选择的参考系不同而引起的 C.研究物体运动时不一定要选择参考系 D.参考系的选择只能是相对于地面静止的物体 2.钓鱼岛自古就是我国固有的领土,它到温州的直线距离为 356km。若某天 我国海监船为维护我国对钓鱼岛的主权,早上 8:00 从温州出发去钓鱼岛巡航, 航行了 480km,历时 8 时 20 分到达钓鱼岛。下列说法中正确的是( A.8:00 是指时间间隔 B.8 时 20 分是指时刻 C.该海监船位移大小为 480km,路程为 356km D. 尽管海监船比较大,但还可以将它看成质点
A.发令枪一响,乌龟先跑出去,兔子过一会儿才跑出去 B.乌龟一直匀加速前进 C.兔子先加速前进,中途匀速前进,最后又加速前进 D.除起点和终点外,在赛跑的途中乌龟和兔子共相遇两次 17.关于物体的速度和加速度,下列说法中正确的是 ( )
A.火箭点火升空的瞬间,火箭的速度和加速度可能都为零 B.火炬手登上珠峰顶时,所在位置的重力加速度要小于 9.8 m/s2 C.高速行驶的磁悬浮列车的加速度有可能为零 D.轿车速度变为 100 km/h 时紧急刹车,这里轿车的速度 100 km/h 是指 平均速度
t/s 0.6
0.10.2Fra bibliotek0.30.4
0.5
7
在打 A 计数点时,小车的速度 vA=__________m/s. 四、计算题(共 20 分) 。 22、飞机着陆后以 6 m/s2 的加速度做匀减速直线运动,其着陆速度为 60 m/s, 求: (1)它着陆后 12 s 内滑行的位移大小; (2)整个减速过程的平均速度大小(用两种方法求解); (3)静止前 4 s 内飞机滑行的位移大小。 (4)飞机着陆后第 4s 内的位移大小。
2014-2015年秋季第一学期新人教版六年级上册数学期中考试试卷
1六年级上册数学期中考前预测试卷(考试时间90分钟,满分100分)姓名: 班别: 学号 成绩:一.填空题(本大题共10小题,每小题2分,共20分)1.60的14 是( ),( )的14 是120。
比64吨多38 是( )吨。
2.甲与乙的比是3∶5,那么甲是乙的( )( ) ,乙是甲乙两数和的( )( )二年级男生占女生的87 ,那么男生比女生多( )( )3. 243时=( )时( )分 59公顷=( )公顷( )平方米.4.一桶油重32千克,用去它的43,还剩下( )千克。
如果再用去43千克,还剩( )千克.5.在方格上用数对(6,3)表示小明所站的位置,那么小明是在第6( ),第3( )。
54 的倒数是( ) 19 的倒数是( )6. 直径为10分米的半圆,周长是( )分米。
在一个周长为80厘米的正方形纸片内,要剪一个最大的圆,这个圆周长是( )厘米。
7. ( ):30=53=15÷( )=) (27=( )填小数8. ( )× 67 = 8×( )= 34 ÷( )= 16 +( )= 19.梨的 35 是苹果的千克数①上述句子中,单位“1”是( ) ②等量关系式是( )〇( )=( )10、40千克:0.4吨比值是( )。
把51:1.7化成最简整数比是( ).二、判断题。
(本大题共6小题,共6分)11. 大小两个圆,大圆周长与直径的比,等于小圆周长与直径的比. ( )12. 甲数比乙数多31吨 ,则乙数比甲数少31吨 。
( )13.比的前项和后项同时乘或除以非0的数,比值不变。
( )14.52除以一个真分数,所得的商大于52。
( ) 15 .如果A :B=4:5,那么A=4,B=5 ( )16.松树比柏树的棵数多51,那么柏树比松树少61( )三.选择题(本大题共4小题,共4分)17. 一个三角形的内角度数之比是1:3:5,则这个三角形是( )。
江苏省东台市头灶镇曹丿中学2014-2015学年八年级上学期期中考试数学试题
A B C D(时间:100分钟;满分:120分)一、选择题(本大题共8小题,每小题有且只有一个答案正确,请把你认为正确的答案前的字母填入下表相应的空格内,每小题3分,共24分) 1.下列图形是轴对称图形的是2.下列四组数据,能作为直角三角形的三边长的是A .2、4、6B .2、3、4C .5、7、12D .8、15、17 3.如图,△ABC 与△A ′B ′C ′关于直线l 对称,则∠B 的度数为A .30°B .50°C .90°D .100°4.如图,有两棵树,一棵高10米,另一棵高4米,两树相距8米,一只小鸟从一棵树的树梢飞到另一棵树的树梢,问小鸟至少飞行 A .8米 B .10米 C .12米 D .14米5.某种鲸鱼的体重约为51.2710⨯kg .关于这个近似数,下列说法正确的是A .精确到百分位B .精确到千分位C .精确到千位D .精确到万位6.下列各数中,,39-,3……,-π,25,71-,无理数的个数有 A .1个 B .2个 C .3个 D .4个7.等腰三角形两边长分别为4和8,那么它的周长等于A .20B .16C .14或15D .16或208.如图,在△ABC 中,8AC =,6BC =,10AB =,把ABC ∆沿AB 边翻折成ABC '∆,(在同一个平面内)则CC '的长为二、填空题(本大题共10小题,每小题3分,共30分) 9.64 的立方根是 .10.已知a 、b 为两个连续的整数,且a <28<b ,则a b += .11.如图,以数轴的单位长度为边作正方形,以数轴上的原点O 为圆心,正方形的对角线的长为半径作弧与数轴交于一点A ,则点A 表示的数为 . 12.如图,所有的四边形都是正方形,所有的三角形都是直角三角形,其中最大的正方形的边长为7cm ,则正方形A 、B 、C 、D 的面积之和为 cm 2.13.如图,BO 平分∠ABC ,CO 平分∠ACB ,过点O 作M N ∥BC ,分别交AB 、AC 于点M 、N ,若AB =12,△AMN 的周长为29,则AC = .14.如图,ABC △中,AB =AC =10,BC =8,AD 平分BAC ∠交BC 于点D ,点E 为AC 的中点,连接DE ,则CDE △的周长为 . 15.若一个直角三角形的两边的长....分别为m 、n ,且满足340m n --=,则第三边的长为___________.图① 图② 图③ 16.如图,1=OP ,过P 作OP PP ⊥1且11=PP ,得21=OP ;再过1P 作121OP P P ⊥且121=P P ,得32=OP ;又过2P 作232OP P P ⊥且132=P P ,得23=OP ;……依此法继续作 下去,得2014OP =_______.17.如图,∠DAB =∠EAC =60°,AB =AD ,AC =AE ,BE 和CD 相交于O ,AB 和CD 相交于P ,则∠DOE 的度数是_______°.18.从一张等腰三角形纸片的底角顶点出发,将其剪成两张小等腰三角形纸片,则原等腰三角形纸片的底角的度数为_______. 三、解答题(本大题共8小题,共66分,解答要写出文字说明,证明过程或计算步骤) 19.计算:(每小题4分,共8分.)(1)求x 的值:()3612=+x . (2)计算:418253+--; 20.(本题满分8分)正方形网格中每个小正方形的边长都是1,每个小正方形的顶点叫做格点,以格点为顶点. (1)在图①中,画一个面积为10的正方形;(2)在图②、③中,分别画两个不全等的直角三角形,使它们的三边长都是无理数. 21.(本题满分8分)如图,在Rt △ABC中,AB =9,BC =6,∠B =90°,将△ABC 折叠,使A 点与BC 的中点D 重合,折痕为MN ,求线段BN 的长.22.(本题满分8分)如图,在△ABC 中,AB 、AC 的垂直平分线分别交BC 于E 、F 两点,∠B +∠C =60°. (1)求∠EAF 的度数;(2)若BC =13,求△AEF 的周长.23.(本题满分8分)如图,△ABC 是等边三角形,D 是AB 边上的一点,以CD 为边作等边三角形CDE ,使点E 、A 在直线DC 的同侧,连接AE .求证:AE ∥BC24.(本题满分8分)如图①,在ABC ∆中,AC AB =,点D 是BC 的中点,点E 在AD 上. (1)求证:CE BE =;(2)若BE 的延长线交AC 于点F ,且AC BF ⊥,垂足为F ,如图②,︒=∠45BAC ,原题设其它条件不变.求证:△AEF ≌△BCF . 25.(本题满分8分)在Rt △ABC 中,∠CAB =90°,AB =AC . (1)如图①,过点A 在△ABC 外作直线MN ,BM ⊥MN 于M ,CN ⊥MN 于N .①判断线段MN 、BM 、CN 之间有何数量关系,并证明; ②若AM =a ,BM =b ,AB =c ,试利用图①验证勾股定理22a b +=2c ;BC AD E第23题图 AB C D EF第24题图②AB CD E第24题图①(2)如图②,过点A 在△ABC 内作直线MN ,BM ⊥MN 于M ,CN ⊥MN 于N ,判断线段MN 、BM 、CN 之间有何数量关系?(直接写出答案)26.(本题满分10分)【问题提出】学习了三角形全等的判定方法(即“SAS ”、“ASA ”、“AAS ”、“SSS ”)和直角三角形全等的判定方法(即“HL ”)后,我们继续对“两个三角形满足两边和其中一边的对角对应相等”的情形进行研究.【初步思考】我们不妨将问题用符号语言表示为:在△ABC 和△DEF 中,AC =DF ,BC =EF ,∠B =∠E ,然后,对∠B 进行分类,可分为“∠B 是直角、钝角、锐角”三种情况进行探究. 【深入探究】第一种情况:当∠B 是直角时,△ABC ≌△DEF . (1)如图①,在△ABC 和△DEF ,AC =DF ,BC =EF ,∠B =∠E =90°,根据 ,可以知道Rt △ABC ≌Rt △DEF .第二种情况:当∠B 是钝角时,△ABC ≌△DEF .(2)如图②,在△ABC 和△DEF ,AC =DF ,BC =EF ,∠B =∠E ,且∠B 、∠E 都是钝角,求证:△ABC ≌△DEF .第三种情况:当∠B 是锐角时,△ABC 和△DEF 不一定全等.(3)在△ABC 和△DEF ,AC =DF ,BC =EF ,∠B =∠E ,且∠B 、∠E 都是锐角,请你用尺规在图③中作出△DEF ,使△DEF 和△ABC 不全等.(不写作法,保留作图痕迹)(4)∠B 还要满足什么条件,就可以使△ABC ≌△DEF ?请直接写出结论:在△ABC 和△DEF 中,AC =DF ,BC =EF ,∠B =∠E ,且∠B 、∠E 都是锐角,若 ,则△ABC ≌△DEF .A BCD EFG第22题图2014/2015学年度第一学期期中质量检测八年级数学试卷参考答案22.(1)求∠EAF=60°;…………4分(2)△AEF 的周长为13.…………8分 23.证BCD ∆≌ACE ∆得:60B EAC ∠=∠=︒证得:EAC ACB ∠=∠ ∴AE ∥BC …………8分24. (1)证明:先用三线合一证得AD ⊥BC ;再由AD 垂直平分BC 得CE BE =…………4分 (2)在ABF ∆中证明:FA FB =; 再证CAD CBF ∠=∠;由角边角证明全等.…………8分 25.(1)①MN =BM +CN证明△AMB ≌△CNA .…………3分②由△AMB ≌△CNA 得到NA=MB=b 、CN=AM=a 、CA= AB=c ;利用△AMB 、△ABC 、△CAN 面积之和等于梯形BCNM 的面积进行证明……6分 (2)BM = MN +CN …………8分 26.(1)解:HL ;…………2分(2)证明:如图,过点C 作CG ⊥AB 交AB 的延长线于G ,过点F 作DH ⊥DE 交DE 的延长线于H ,∵∠B =∠E ,且∠B 、∠E 都是钝角,∴180°﹣∠B =180°﹣∠E , 即∠CBG =∠FEH , 在△CBG 和△FEH 中,,∴△CBG ≌△FEH (AAS ),∴CG =FH ,在Rt △ACG 和Rt △DFH 中,,∴Rt △ACG ≌Rt △DFH (HL ),∴∠A =∠D ,在△ABC 和△DEF 中,,∴△ABC ≌△DEF (AAS );…………5分(3)解:如图,△DEF 和△ABC 不全等;…………8分 (4)解:若∠B ≥∠A ,则△ABC ≌△DEF .…………10分 故答案为:(1)HL ;(4)∠B ≥∠A .。
内蒙古包头蒙中2015届高三上学期期中考试语文试题
内蒙古包头蒙中2015届高三上学期期中考试语文试题高三2010-12-17 17:12内蒙古包头蒙中2015届高三上学期期中考试语文试题高三年级语文试题本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分。
满分150分,考试时间150分钟。
第I卷(共30分)一、(12分,每小题3分)1.下列词语中加点的字,读音完全正确的一组是()A.膝(xī)盖嬗(shàn)变舂(chōng)米汗流浃(jiá)背B.血(xuâ)压打烊(yàng)毗(pí)邻纷繁芜(wú)杂C.夯(hāng)实与(yù)会汇兑(duì)大兴(xìng)土木D.倾轧(yà)咂(zā)摸祓(fú)除为(wãi)人作嫁2.下列各句中,加点的成语使用不恰当的一项是()A.最近一期的《瞭望新闻周刊》有文章称“消费就是爱国”,有关专家撰文加以嘲笑:我从来没有想到量入为出的生活方式,居然会成为一种道德瑕疵。
B.当然我们不能以此来要求心智不高内力不坚的芸芸从生,但我仍然很高兴看到在中国古代文人中有这样一个拒绝权势媒聘、坚决不合作的例子。
C.我们习惯于为一些宏大的思路击掌,却忽视了那些看似不足为训却有可能带来制度影响的小变革。
D.官窑瓷器一般都是专门供给宫廷的御用品,存世量相当少,在民间更是凤毛麟角,这些收藏者动辄就说自己收到了“官窑”,很让人怀疑。
3.下列各句中,没有语病的一句是()A.文章认为,大城市如果出现各入学阶段的适龄人口锐减现象而外来人口子女仍无法享受其优质教育资源,那就是一件很悲哀的事情。
B.善于倾听是衡量一个管理者水平高低的标志,日本松下电器的创始人松下幸之助把自己全部经营的秘诀归结为细心倾听他人的意见。
C.防控甲型H1N1流感需要群众提高自我保护意识和防病能力,只要科学、理性地做好群防群控,就一定能将疫情发生及其恶劣影响的破坏性减到最低。
2014- 2015学年七年级(五四学制)上学期期中考试英语试题(鲁教版)
2014-2015学年七年级(五四学制)上学期期中考试英语试题(鲁教版)(时间:100分钟分数:120分)卷Ⅰ(共65分)一、听力选择(共20小题,计20分)(一)录音中有五个句子,每个句子听一遍,然后从每小题A、B、C中选出适合每个句子的答语.()1.A.In the morning.B.At half past six.C.On Monday.()2.A.I t’s February.B.I t’s fine.C.I t’s Tuesday..()3.A.Two.B.Twice a week.C.I think they’re easy.()4.A.Friday.B.Music.C.Books.()5.A.Because i t’s interesting.B.Because I don’t like it.C.Because i t’s difficult.(二)录音中有五组对话,每组对话听一遍.然后从每小题A、B、C中选出能回答每个问题的正确答案.()6.Where is the school?A.Behind the bank.B.In front of the bank.C.Across from the bank.()7.What can Mary do on school nights?A.Play computer games.B.Listen to music.C.Go out.()8.What does Mary look like?A.She is tall.B.She is thin.C.She is of medium buil d.()9.Where did Jack go on Sunday?A.To the beach.B.To the museum.C.To the park.()10.What would the girl like?A.Rice and beef.B.Potatoes and mutton.C.Rice and mutton.(三)录音中有一段对话,听对话两遍,然后从每小题A、B、C中选出能回答每个问题的正确答案.()11.When did the boy call Gina?A.Yesterday morning.B.Yesterday afternoon.C.Yesterday evening.()12.Where did Gina go?A.To the zoo.B.To the museum.C.To the park.()13.Who is Mary?A.Gina’s sister.B.Gina’s friend.C.Gina’s cousin.()14.What does Mary look like?A.She is tall and thin.B.She is tall and a littl e heavy.C.She is short and a littl e heavy.()15.What animals didn’t Gina and Mary see?A.Tigers.B.lions.C.Giraffes.(四)录音中有一篇短文.听短文两遍,然后从每小题A、B、C中选出能回答每个问题的正确答案.()16.How is Jenny’s1ast Sunday?A.Relaxing.B.Boring.C.Interesting.()17.What did Jenny do in the morning?A.She went shopping.B.She Watched TV C.She played computer games.()18.、Who is Jack?A.Jenny’s friend.B.Jenny’s classmate.C.Jenny’s cousin.()19.What did J enny do at four o’clock in the afternoon?A.She did her homework.B.She played Soccer C.She read books.()20.What time did Jenny go to bed?A.At 9:30 p.m.B.At 10:00 p.m.C.At 10:30 p.m.二、单项选择(共15小题,计15分)从每小题A、B、C、D中选出一个能填入句中空白处的最佳答案.21、My brother can play______ basketball,but he can’t play chess.A.the;/B./;the C. the;the D. a;the22、The movie is .I'm very in it.A.interesting;interested B.interested;interestingC.interesting;interesting D.interested;interested23、do you leave home?Because 1 want to make money.A.Where B. What C. Why D. Who24、The girl curly hair wears .A.has;glass B.with;glasses C.in;glasses D.with;glass 25.Is there meat in the egg soup?Yes.there is.A.some B.any C.few D.many26.Pl ease ______ a wish before you eat the cake.A.take B.get C.make D.have27._____________ the weather in Taiwan?It is rainy.A.How’s;like B.How;like C.What;like D.Wha t’s;like 28.What does he ?A.1ike look;He is happy B.look like;He is at homeC.1ike look;He is ill D.look 1ike;He is short29.Look! We have _________ orange Juice now.Really? Le t’s go and buy some.A.1ittle B.a 1ittle C.few D.a few30.Tom usually goes fishing __________ Sunday morning·A.at B.on C.for D. in31. My brother enjoy mountainsA.climb B.climbs C.climbing D.to climb32. Where is Frank now?He_______ in the reading room.A.read B.reading C.reads D.is reading33. My mother______ noodl es,but my father__________A.1ikes;does B.don’t like;doC. doesn’t like; does D.didn’t like;do34. Dal e likes but he doesn’t like noodl esA.tomatoes;tomatoes B.tomato;tomatoesC.tomato;tomato D.tomatoes;tomato35. -------What time is it? My watch doesn’t__________---------I t’s nine o’clock.A.go B.finish C.work D.stop三、阅读理解(共20小题,计30分)阅读下列短文,并做每篇后面的题目,从各题A、B、C、D中选出回答所提问题或完成所给句子的最佳答案.AMy name is Rick.I come from England.I’m twelve years ol d.I go to school on weekdays,but not on weekends.1 usually get up at half past seven in the morning,and then have breakfast.My mother cooks breakfast for me.Sometimes I have an egg and a glass of milk.Sometimes I have some bread and some juice.My school is across from my house.So I walk there.I leave home at half past eight.We start classes at nine o’cl ock. We have three classes in the morning.My favorite subject is geography.At eleven o’clock.we have a break and I talk to my friends.Some stud ents go to play football.but I don’t 1ike football.I have lunch at half past twelve at home.I often have meat and rice with vegetables.I drink juice or soup.We start classes at half past one in the afternoon.We have two classes in the afternoon.Classes are over at half past three.In the evening, I watch TV and have dinner with my family.And then I do my homework.I usually go to bed at half past nine.36. How does Rick go to school?A.He walks there.B.He takes a bus there.C.He rid es a bike there.D.He takes the subwav there.37.Which of the following is true?A、Rick is a Chinese boyB、Rick is an English boyC、Rick is an American boyD、Rick is a Japanese boy38.How many classes does Rick have a day?A.Three.B.Four.C.Five.D.Six.39.Where d oes Rick have lunch?A.At schoo1.B.At home.C.At a restaurant.D.At his friend’s home.40.When does Rick usually go to bed?A.At 8:30 P.m.B.At 9:00 P.m.C.At 9:30 P.m.D.At 10:00 P.m.BMr.Brown had much money.One day he went on a trip to the countrysid e with his 5-year-ol d son Eric.He wanted to show his son how poor people lived,So they spent a day and a night on the farm of a very poor family.When they got back from their trip. Mr. Brown asked Eric,“My dear son,how was the trip?”“Very good,Dad!” Eric said happily.“Did you see how the poor lived? ” Mr. Brown asked.“Yeah!” Eric answered.“And what did you l earn?” Mr. Brown asked.“We have a dog at home but they have four.We have a pool that is in the middl e of the gard en but they have a river that has no end.We have expensive lamps(灯)in the gard en hut they have the stars,”Eric answered.When little Eric finished.Mr. Brown cou ldn’t say anything.41.Mr. Brown and his son spent _______in the countrysideA.about 12 hours B.about 24 hoursC.about 48 hours D.1ess than 12 hours42.The underlined word ”poor”means“________”in Chinese.A.贫穷的B.富裕的C.快乐的D.漂亮的43.Why did Mr. Brown take Eric to the farm?A.To show him how poor their family was.B.To show him how rich their family was.C.To show him where the poor lived.D.To show him how the poor lived.44. Eric felt _________ about the trip.A.tired B.unhappy C.great D.sad45.Which of the following is NOT true?A.Eric was only five years ol d.B.There was one dog on the farm.C.Eric liked the farm very much.D.There were some lamps in Mr.Brown’s gard en.CTommy, Ted dy, Belly and Molly are brothers and sisters.They live in a village with their parents.Tommy is thirteen years ol d.He is healthy, and he has short curly hair with small black eyes.He loves his parents and often helps them do the housework.Ted dy is ten years ol d.His eyes are big.His hair is brown and long.He likes eating meat very much.Belly’s eyes look like her brother Teddy’s.And she likes playing games with Ted dy.She doesn’t like to play with her little s ister Molly, because Molly is only five years ol d.Their mother, Mrs. White looks after Molly at home.Their father is tall.He works on a farm.They don’t have much money, but they live a happy life.46.How old is Tommy?A.13 years ol d B.10 years old C.8 years ol d D.5 years ol d 47.How old is Molly?A.13 years ol d B.10 years old C.8 years ol d D.5 years ol d 48.What does Ted dy look like?A.He has small eyes and long brown hair.B.He has big eyes and short brown hair.C.He has small eyes and short brown hair.D.He has big eyes and l ong brown hair.49.What does Belly like playing games with?A.Tommy.B.Ted dy.C.Molly.D.Her mother.50.Where does Mr. White work?A.In a zoo.B.In a restaurant.C.On a farm.D.In a hospital.DDear Susan,We went to Thailand for vacation last year.We were very excited.It was our first time there.Thailand is a really beautiful country.The sky is blue.The trees are green.The buil dings are fantastic.We spent seven days in Bangkok(曼谷).Of course,we got a boat to the fl oating market(水上市场).We bought some delicious fruit there.We went to a very interesting temple called the Temple of the Emeral d Buddha(玉佛寺).We also visited some other templ es.Everything was great.The best thing about the trip was food.I like to cook it for you.Yours,Sonia51.It is the ________time for Sonia to Thailand.A.first B.second C.third D.fourth52.They stayed in Thailand for about_____________.A.a day B.a week C.a month D.a year53.How did they go to the floating market?A.They took the boat.B.In their car.C.They went there by train. D.They walked there.54.Which one is TRUE?A.We bought some temples in the Templ e of the Emeral d Buddha.B.We bought some temples on floating market.C.The buil dings are very tall,but not fantastic.D.The air in Thailand is very cl ean.55.How was the food in Bangkok?A.It was awful.B.It was just so-so.C.It was very delicious.D.I didn’t like it.(时间:100分钟分数:120分)卷Ⅰ(答题卡共65分)一、听力(20分)二、单项选择(15分)三、阅读理解(30分)卷Ⅱ(共55分)四、单词拼写与应用(共8小题,计8分)A)根据句意及汉语提示,写出各单词的正确形式,每空填一词.56.Thanks a lot for (invite) me. I had a great time at the party.57.I need some (tomato) for lunch.58.Li Hua is a good singer ,He is good at (sing).59.How many (bowl) of rice can they eat?B)根据句子意思,用括号中所给词的正确形式填空,每空填一词.60.Don’t _______ (嘲笑) at the little boy .He’s only six years old.61.English is a useful (语言).62.Eating more vegetabl e is good for your (健康).63.We saw a cat (睡觉)by a lake yesterday.五、动词填空(共1空,计7分)阅读下面短文,用括号内所给动词的适当形式填空(必要时可加情态动词或助动词).Now people have more money than before, and they want (64) ___ (enjoy) life. So people have different id eas about how to enjoy their vacation. Listen! Some people (65)_________ (talk) about their vacations last month.Mrs. Lee is saying, “I love sports. I (66) ( ride) bikes with my family on vacation last week. We did exercise and enjoyed lots of interesting places. That was really great.”Mr. Zhao is saying, “I l ove nature.”I often(67) (take) a walk in the countrysid e on weekend. Last Sunday I went (68) (camp) in the mountains. I hope the beauty of nature could help me(69) (forget) all of my problems.Miss Wang likes to be beautiful. “I went to Hong Kong for shopping yest erday, and I(68) (buy)lots of beautiful clothes.”Zhang Ysihan is a movie actor. He just finished making his last movie. Now he really wants to get some rest. He is saying ,“I like going sightseeing. I want to stay in the United States for a month. A relaxing vacation! I can’t (70)(wait)!”六、综合填空(共10小题,计10分)阅读短文,根据短文内容和已给出的首字母,在空白处填入恰当的单词.将完整的单词写在短文后面的横线上.There are three people in Tom’s family——Tom and his parents.I t’s5 o’clock in the afternoon now.Tom’s family are all at home.What are t (7 1) doing? They are busy with Tom’s father’s birthday.They will have a birthday party i (72)their house.Tom’s cousin Tina and her p (73)will come to the party. Tina is 8 years old.She is two years ol d er than Tom.She has big eyes and long h (74).Tom likes to play games w (75)her.Someone is knocking at(敲)the d (76).“Great! They are coming,my cousin, my uncl e and aunt. Tom is very happy, and he is polite too.He (77)s_____ hello to them and asks them to sit on the sofa,and then his aunt and his mother start to c (78).After an hour, the dinner is OK. All of them are s (79)at the tabl e.First theysing Happy Birthday to Tom’s father.Then they eat the birthday cake.Cake is Tom’s f_______ (80)food,so he says,“Mom,I hope Tomorrow will be my birthday.”71. 72. 73. 74. 75.76. 77. 78. 79. 80.七、阅读表达(共五小题,计10分)阅读短文,根据要求完成下面各个小题.Eleanor has five children ——Jacod, James, Janet,Jessica and Julie. They always want her attention(注意).The ol dest chil d,Jacob,helps their mom a lot. but the younger children don’t want Jacob. They want their mom.One day El eanor felt very tired. So she sent(送) all the children to their grandma’s house for the day.She was alone in the house.She listened to music and cleaned me house. After cl eaning the house.She sat on the sofa.She had some tea and read a book.(83)Eleanor enjoyed having so much quiet time.After lunch.Eleanor didn’t feel so tired.She felt how quiet the house was.“Where’s James? Where’s Jessica? Where’s little Julie? I miss my children.” El eanor wanted all her children to come back home. She called their grandma to send them back.(一)根据短文内容简要回答问题.81.Where did El eanor send her chil dren?82.What did the children do after coming back home?(二)将短文中划线句子译成汉语.83.84.(三)85.请给短文选择一个适当的标题: __________A: El eanor has five chil dren.B: El eanor was happy to have her five children.C: One day.八、书面表达(共1题,计20分)英语课上,老师要求大家把每个人印象最深刻的旅行经历用日记的形式记录下来,做一个班级的旅行快乐集.你也赶快动笔吧!提示:要求:1.语言通顺,有层次,可适当发挥; 2.注意日记格式. 3.字数60-80词.。
ae笔试考试题及答案
ae笔试考试题及答案一、选择题(每题2分,共10题)1. AE软件全称是什么?A. Adobe After EffectsB. Adobe Premiere ProC. Adobe PhotoshopD. Adobe Illustrator答案:A2. 下列哪个不是AE中的关键帧类型?A. 线性关键帧B. 贝塞尔关键帧C. 动态关键帧D. 静态关键帧答案:D3. AE中如何创建一个新的合成?A. 点击菜单栏的“文件”选择“新建”然后选择“合成”B. 点击菜单栏的“编辑”选择“新建”然后选择“合成”C. 点击菜单栏的“窗口”选择“新建”然后选择“合成”D. 点击菜单栏的“帮助”选择“新建”然后选择“合成”答案:A4. 在AE中,如何将一个图层的属性应用到另一个图层?A. 使用“复制”和“粘贴”属性B. 使用“链接”属性C. 使用“替换”属性D. 使用“合并”属性答案:A5. AE中的时间线面板是用来做什么的?A. 预览动画效果B. 调整图层顺序C. 编辑关键帧D. 所有上述选项答案:D6. 下列哪个不是AE中的遮罩操作?A. 添加遮罩B. 扩展遮罩C. 收缩遮罩D. 旋转遮罩答案:D7. 在AE中,如何预览当前合成的效果?A. 按空格键B. 按回车键C. 按Shift键D. 按Ctrl键答案:A8. AE中如何调整图层的不透明度?A. 在“效果”面板中搜索“不透明度”并应用B. 在“图层”面板中直接输入数值C. 在“属性”面板中调整“不透明度”滑块D. 在“时间线”面板中调整“不透明度”滑块答案:C9. AE中如何创建一个固态层?A. 点击菜单栏的“图层”选择“新建”然后选择“固态层”B. 点击菜单栏的“图层”选择“新建”然后选择“文本层”C. 点击菜单栏的“图层”选择“新建”然后选择“调整层”D. 点击菜单栏的“图层”选择“新建”然后选择“灯光层”答案:A10. 在AE中,如何将多个图层合并为一个图层?A. 使用“预合成”功能B. 使用“合并图层”功能C. 使用“分组”功能D. 使用“链接”功能答案:A二、简答题(每题5分,共2题)1. 请简述AE中父子关系的作用。
虹口区2015学年度第一学期期中教学质量监控测试初三数学
虹口区2015学年度第一学期期中教学质量监控测试初三数学2015.11一、选择题1、已知矩形ABCD 与矩形EFGH 是相似形,并且点A 与点E 、点B 与点F 、点C 与点G 、点D 与点H 分别是对应顶点,若AB=2,AD=4,则EF:EH 等于( )A 、1:4B 、4:1C 、1:2D 、2:12、若将mn=pq(m ≠0)变形,则下列式子中,错误的是( )A 、n q p m =B 、q n m p =C 、p n m q =D 、qp n m = 3、如图,在平行四边形ABCD 中,EF//AB 交AD 于点E ,交BD 于点F ,若DE:EA=3:4,CD=7,则EF 的长为( )A 、4B 、3C 、328D 、4214、在△ABC 中,若点D 、E 分别在边AB 、AC 上,则下列条件中,一定能推出DE//BC 的是( )A 、AB AD BC ED = B 、DB AD BC ED = C 、AE EC DB AD = D 、ECDB AE AD = 5、如图,在直角坐标平面xoy 内有一点P (3,4),那么OP 与x 轴正半轴的夹角α的正弦值是( )A 、53B 、54C 、43D 、346、如图,在正方形ABCD 中,如果E 为CD 边的中点,P 是BC 边上的一动点,那么下列条件中,能推出△ABP 与△ECP 相似的是( )A 、BP:BC=1:3B 、BP:BC=1:2C 、BP:BC=2:3D 、 BP:BC=3:425.(本题14分,第(1)小题4分,第(2)小题5分,第(3)小题5分)如图,在Rt ABC ∆中,90ACB ∠=︒,AC =BC =1,E 、F 为边AB 上两动点,且45ECF ∠=︒,过点E 、F 分别作BC 、AC 的垂线相交于点D ,垂足分别为点H 、G . 设A 、E 两点间的距离为x ,B 、F 两点间的距离为y.(1)当y =时,求DG 的长;(2)求y 关于x 的函数关系式,并写出x 的取值范围;(3)分别联结AD 和BD ,若ADF ∆与BDE ∆相似,求x 的值.C A C B A H G EF DC BA。
ae考试题及答案
ae考试题及答案一、选择题(每题2分,共20分)1. AE软件全称是什么?A. Adobe EffectsB. Adobe IllustratorC. Adobe PremiereD. Adobe Photoshop答案:A2. 以下哪个不是AE中的图层类型?A. 固态层B. 文字层C. 形状层D. 音频层答案:D3. 在AE中,如何复制一个图层?A. Ctrl+CB. Ctrl+VC. Ctrl+DD. Ctrl+X答案:C4. AE中的关键帧动画是什么?A. 用于创建动画效果的技术B. 用于创建静态图像的技术C. 用于创建音频效果的技术D. 用于创建3D效果的技术答案:A5. 以下哪个是AE中的3D空间属性?A. 位置B. 旋转C. 缩放D. 所有以上答案:D6. 在AE中,如何调整图层的透明度?A. 使用不透明度属性B. 使用颜色属性C. 使用混合模式D. 使用蒙版答案:A7. AE中的时间线面板用于做什么?A. 预览动画效果B. 调整图层顺序C. 编辑关键帧D. 所有以上答案:D8. 如何在AE中创建一个新的固态层?A. 通过菜单栏的“图层”>“新建”>“固态层”B. 通过菜单栏的“图层”>“新建”>“调整层”C. 通过菜单栏的“图层”>“新建”>“文本层”D. 通过菜单栏的“图层”>“新建”>“形状层”答案:A9. AE中的色彩校正工具可以用来做什么?A. 调整颜色平衡B. 调整亮度和对比度C. 调整饱和度D. 所有以上答案:D10. 在AE中,如何预览当前的合成效果?A. 按空格键B. 按回车键C. 按Shift键D. 按Ctrl键答案:A二、填空题(每题2分,共20分)1. AE中,____图层可以用来创建动画效果。
答案:遮罩2. 在AE中,____工具可以用来绘制形状。
答案:钢笔3. AE的时间线面板中,____按钮可以用来播放或停止动画。
2015-2016学年第一学期九年级语文北师大期中试题
得分 评卷人 二、阅读理解(50 分)
(一)阅读下面说明文,完成 7 — 11 题。(15 分) 神奇的智能材料
① 何谓智能材料?现在还没有严格的定义,但一般来说,它指的是能感知环境条件并 做出相应“行动”的材料。智能材料的行为与生命体的智能反应有点类似。举一个简单的例 子,太阳镜片中就含有某种材料,这种智能材料能感知周围的光,并能对光的强弱做出判 断:当周围的光很强时,它就自行变暗;当光较弱时,它又变得透明起来。
② 也正是那一年,十三岁的我,遗失了寒冷。一晃,三十年过去了,今天的我才尝试着 触摸那段遗失寒冷的过程。那一年,我升入初中,必须在学校住宿。宿舍是一面窄窄的空 荡荡的窑洞,我们直接在地上铺铺盖。别人都是先在地上铺一个厚厚的草垫子,上面再铺 个毡子毯子什么的,接下来才铺上褥子,褥子上面还有个布单子,叫“护单”— —— 怕将褥 子弄脏了。我呢,只带了褥子和被子,压根就没有其它东西铺在地上,褥子显然是不能直 接铺在地上的。于是我就满学校找来了一些废纸片,铺在地上,才开始铺褥子。结果是:我 的床铺比两边的同学低下来一截,她们都觉得我不应该夹在中间。于是,我就自觉地挪到 了最边上,— —— 门口的墙下。冬天天冷,夜又长,起夜的学生就多。门一拉一合,冷风就直 吹过来。抗击了半天寒冷好不容易才入睡的我,常常又被寒风刺醒。为了应对寒冷跟风的 袭击,我睡觉不再脱衣服且蒙住了头。
9. 本文主要从哪几方面说明智能材料的功能?(3 分)
10. 选文中介绍的智能材料广泛使用后,将给我们的生产和生活带来哪些方面的变化?请 你列举出三点。(3 分)
11. 细读文章第④段,请你联系实际,展望未来智能材料发展前景,描述智能材料在教学 或学习上的运用。(3 分)
(二)阅读下面议论文,完成 12 — 17 题。(17 分) 相信自己,永不言弃
北京教育学院附属中学2015届高三上学期期中考试数学(理)试题 Word版无答案
北京教育学院附属中学2014 ~ 2015学年度第一学期期中试卷高三数学(理科) 2014.11试卷满分:150分 考试时间:120分钟题号 一 二三本卷总分1516 17 18 19 20 分数一.选择题:本大题共8小题,每小题5分,共40分. 在每小题给出的四个选项中,只有一项是符合题目要求的.1.若集合{}0P y y =≥,P Q Q ⋂=,则集合Q 不可能是( ) (A )∅ (B ){}2,R y y x x =∈(C ){}2,R xy y x =∈ (D ){}2log ,0y y x x =>2.若向量()1,2a =,()1,1b =-,则2a b +与a b -的夹角等于( ) (A )4π- (B )6π (C )4π (D )34π3. 命题p :22,0x x ax a ∀∈++≥R ;命题q :x ∃∈R ,sin cos 2x x +=,则下列命题中为真命题的是( )(A )p q ∧ (B )p q ∨ (C )()p q ⌝∨ (D )()()p q ⌝∧⌝4. 下列函数中,既是偶函数又在(0,)+∞单调递增的函数是( ) (A )1y x=-(B )||e x y = (C )23y x =-+ (D )cos y x = 5. 下列四个函数中,最小正周期为π,且图象关于直线12x π=对称的是( )(A ) sin()23x y π=+ (B ) sin()23x y π=-(C )sin(2)3y x π=+ (D )sin(2)3y x π=-6.函数()sin(2)(,)f x A x A ϕϕ=+ R 的部分图象如图所示,那么(0)f =( )(A )12-(B )1- (C )32- (D )3-7.已知数列{}n a 的前n 项和为n S ,11a =,12n n S a +=,则n S =(A )12n - (B ) 21n- (C ) 13n - (D ) 1(31)2n-8.对任意实数a ,b 定义运算“⊙”:,1,,1,bab a b a a b -≥⎧=⎨-<⎩ 设2()(1)(4)f x x x k =-++,若函数()f x 的图象与x 轴恰有三个交点,则k 的取值范围是( )(A )(2,1)- (B )[0,1] (C )[2,0)- (D )[2,1)-二、填空题:本大题共6小题,每小题5分,共30分. 把答案填在题中横线上.9.已知平面向量(1,2)=a ,(2,)m =-b ,且a ∥b ,则=b .10.为了得到函数cos(2)3π=-y x 的图象,只需将函数cos 2=y x 的图象向 平移 个单位.11. 已知tan =2α,那么cos 2=α .12.已知圆04122=-++mx y x 与直线1x =-相切,则=m _______.13.函数2()cos sin 1f x x x =--+的值域是 .14.如图,在直角梯形ABCD 中,//AB CD ,AB BC ⊥,2AB =,1CD =,(0)BC a a =>,P 为线段AD (含端点)上一个动点,设AP xAD =,PB PC y ⋅=,对于函数()y f x =,给出以下三个结论:○1 当2a =时,函数()f x 的值域为[1,4]; ○2 (0,)a ∀∈+∞,都有(1)1f =成立; ○3 (0,)a ∀∈+∞,函数()f x 的最大值都等于4. 其中所有正确结论的序号是_________.三.解答题:本大题共6小题,共80分. 解答应写出文字说明,证明过程或演算步骤 . 15.(本小题满分13分) 等差数列}{n a 中,12,23211=++=a a a a (Ⅰ)求}{n a 的通项公式;(Ⅱ)若1,11=+=+b b a b n n n ,求}{n b 的通项公式.A BD CP16.(本小题满分13分) 在ABC △中,sin 3cos A Ba b=. (Ⅰ)求角B 的值;(Ⅱ)如果2b =,求ABC △面积的最大值.17.(本小题满分13分)已知向量a =(sin ,cos())x x π-,b =(2cos ,2cos )x x ,函数()1f x =⋅a b +. (Ⅰ)求π()4f -的值;(Ⅱ)求函数()f x 的单调增区间;(Ⅲ)求()f x 在π0,2⎡⎤⎢⎥⎣⎦上的最大值和最小值,并求出相应的x 的值.18.(本小题满分13分)已知,a b 为常数,且0a ≠,函数()ln ,()2f x ax b ax x f e =-++= ( 2.71828e =…是自然对数的底数). (Ⅰ) 求实数b 的值;(Ⅱ) 求函数()f x 的单调区间;(Ⅲ) 当1a =时,是否同时存在实数m 和M()m M <,使得对每一个...[],t m M ∈,直线y t =与曲线1()(,)y f x x e e⎡⎤=∈⎢⎥⎣⎦都有公共点?若存在,求出最小的实数m 和最大的实数M ;若不存在,说明理由.19.(本小题满分14分)已知椭圆22221x y a b+=(0)a b >>上的点到其两焦点距离之和为4,且过点(0,1).(Ⅰ)求椭圆方程;(Ⅱ)O 为坐标原点,斜率为k 的直线过椭圆的右焦点,且与椭圆交于点11(,)A x y ,22(,)B x y ,若1212220x x y y a b+=,求△AOB 的面积.20.(本小题满分14分)设无穷等比数列{}n a 的公比为q ,且*0()n a n >∈N ,[]n a 表示不超过实数n a 的最大 整数(如[2.5]2=),记[]n n b a =,数列{}n a 的前n 项和为n S ,数列{}n b 的前n 项和为n T .(Ⅰ)若1114,2a q ==,求3T ; (Ⅱ)证明: n n S T =(1,2,3,n =L )的充分必要条件为n a N *Î;(Ⅲ)若对于任意不超过2014的正整数n ,都有21n T n =+,证明:120122()13q <<.。
2015-2016七年级上学期数学期中考试试卷
2015~2016学年度第一学期期中考试七年级数学试题考试时间:120分钟 试卷总分:150分第I 卷(本卷满分100分)一、选择题(共8小题,每小题3分,共24分)下列各题中均有四个备选答案,其中有且只有一个正确,请将正确答案的代号填在答卷的指定位置.1.如果80米表示向东走80米,那么﹣60米表示A .向东60米B . 向西60米C .向南60米D . 向北60米2.﹣3的绝对值是A . 3B . ﹣3C . 13-D .3.武汉长江二桥是世界上第一座弧线形钢塔斜拉桥,该桥全长16800m ,16800用科学记数法表示为A . 1.68×104B . 16.8×103C . 0.168×104D . 1.68×1034.下列计算正确的是A . 326=B . 2416-=-C . 880--=D . 523--=-5.在式子x x 3252-,2πx 2y ,x1,﹣5,a 中,单项式的个数是 A . 2个 B . 3个 C . 4个 D . 5个6.与﹣3ab 是同类项的是A . a 2bB . ﹣3ab 2C . abD . a 2b 27.下列各对数中,互为相反数的是A . ﹣(+3)与+(﹣3)B . ﹣(﹣4)与|﹣4|C . ﹣32与(﹣3)2D . ﹣23与(﹣2)38.下列各式计算正确的是A . 6a +a =6a 2B . ﹣2a +5b =3abC . 4m 2n ﹣2mn 2=2mnD . 3ab 2﹣5b 2a =﹣2ab 2二、填空题(共8小题,每小题3分,共24分)下列各题不需要写出解答过程,请将结果直接填在答卷指定的位置.9.若a =2,那么a= .10.比较两数大小:﹣1 2 (填“>”或“<”或“=”).11.(﹣)×(﹣12)= .12. 化简分数:1245--= . 13.用四舍五入法把数1.703精确到0.01约等于 .14.多项式 中次数最高的项是 .15.合并同类项:y y y 23221+-= . 16.若2232+m b a 与﹣0.5a n -1b 4的和是单项式,则m ﹣n = . 三、解答题(共5小题.第17至20题,每小题10分,第21题12分,共52分) 下列各题需要在答题卷指定位置写出文字说明、证明过程、计算步骤或作出图形.17.计算:(每小题5分,共10分)(1)(20)(3)(5)(7)-++---+; (2)(﹣23)×0×34+3)2(-﹣32;18.化简:(每小题5分,共10分)(1))(3)35(2b a b a ---; (2)32(b a 23﹣26ab )﹣2(b a 2﹣252ab ).19.(本题满分10分)先化简,再求值:3x 2y ﹣[2xy 2﹣(2xy ﹣3x 2y )]﹣2xy ,其中x =3,.3225x x y --32x 20.(本题满分10分)如图:边长为x 米的正方形花坛,中间有横,竖两条长方形小路(图中阴影部分),宽度分别为2米和3米,(1)直接写出阴影部分的周长(2)求出空白部分的面积?21.(本题满分12分)一名足球守门员练习折返跑,从球门线出发,向前记作正数,返回记作负数,他的记录如下:(单位:米)4,-3,13,-5,-6,12,-10.(1)守门员最后是否回到了球门线的位置?说明理由.(2)在练习过程中,守门员离开球门线最远距离是多少米?(3)假设守门员每跑1米消耗0.1卡路里的能量,守门员全部练习结束后,他共消耗了多少卡路里的能量?第II 卷(本卷满分50分)四、选择题(共2小题,每小题4分,共8分)下列各题中均有四个备选答案,其中有且只有一个正确,请将正确答案的代号填在答卷的指定位置.22.下列各式正确的是A . 22)(a a -=-B .33)(a a -=-C .22a a -=-D .33a a =- 23.有理数a ,b 在数轴上对应点的位置如图所示,则下列结论正确的是A . a +b >0B . a ﹣b <0C . ab >-1D .1a b >-五、填空题(共2小题,每小题4分,共8分)下列各题不需要写出解答过程,请将结果直接填在答卷指定的位置. 24.若a ,b 互为相反数,m ,n 互为倒数,且22)2(-=x ,则x mnb a ---+20152014)1()(= . 25.计算:10987654322222222222+--------= .六、解答题(共3小题.第26题10分,第27题12分,第28题12分共34分) 下列各题需要在答题卷指定位置写出文字说明、证明过程、计算步骤或作出图形.26.(本题满分10分)已知:ab a B A 7722-=-,且7642++-=ab a B .(1)求A 等于多少?(2)若0)2(12=-++b a ,求A 的值.27.计算(每小题6分,共12分)(1))41283()3()2(31232+-÷---⨯+- (2)观察下列三行数:根据观察得到的规律填空: 第①行数的第n 个数是___________;第②行数的第n 个数是___________;第③行数的第10个数是___________.28.(本题满分12分)数轴上点A 对应的数是-1,B 点对应的数是1,一只小虫甲从点B 出发沿着数轴的正方向以每秒4个单位的速度爬行至C 点,再以同样速度立即返回到A 点,共用了4秒钟.(1)求点C 对应的数;(2)若小虫甲返回到A 点后再作如下运动:第1次向右爬行3个单位,第2次向左爬行5个单位, 第3次向右爬行7个单位,第4次向左爬行9个单位,……依次规律爬下去,求它第10次爬行后停在点所对应的数.(3)①若小虫甲返回到A 后继续沿着数轴的负方向以每秒4个单位的速度爬行,这时另一小虫乙从点B 出发沿着数轴的负方向以每秒6个单位的速度爬行,则运动t 秒后,甲、乙两只小虫的距离为: .(用含t 的式子表示)②若小虫甲返回到A 后继续沿着数轴的负方向以每秒4个单位的速度爬行,同时另两只小虫乙、丙分别从点B 和点C 出发背向而行,乙的速度是每秒2个单位,丙的速度是每秒1个单位。
江苏省射阳县第二中学2015届高三上学期期中考试英语试题
江苏省射阳县第二中学2015届高三上学期期中考试英语试题1. What does the woman imply?A. She didn’t clean the apartment.B. She’ll help the man clean his apartment.C. She needs to clean the lab.2. What does the woman mean?A. She saw the man run out.B. She thought the man’s laundry was done badly.C. She was sorry the man couldn’t finish his laundry.3. What does the man imply?A. His coach didn’t help him enough.B. He had no chance of winning.C. He didn’t follow his coach’s advice.4. What does the woman mean?A. She likes the new theatre in town.B. She expects the theatre to close down.C. She’s surprised by the news.5. What does the man say about the activities?A. They aren’t very good because they’re so different.B. He thinks they should do both.C. It does n’t matter which one they do.第二节(共15小题;每小题1分,满分15分))听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
11AE影视后期制作高二年级期中考试试题
11AE影视后期制作⾼⼆年级期中考试试题⾼三年级《AE 》试卷第1页,共4页⾼三年级《AE 》试卷第2页,共4页左权宏远学校2018——2019学年第⼀学期期末试题⾼⼀年级计算机专业《AE 影视后期制作》试卷说明:本试卷分四部分,全卷满分100分⼀、填空题:(20分,每空2分)1. 是构成动画的最⼩单位。
2. 创建遮罩的⽅法有:⽤标准⼏何遮罩⼯具、⽤绘制遮罩、通过PS 软件绘制路径转成遮罩。
3. 帧速率是指每秒能够播放或录制的帧数,其单位是。
4. 是指X 轴向和Y 轴向构成的平⾯视图。
5. 特效菜单中提供了⼤量的对图像颜⾊信息进⾏调整的⽅法,包括⾃动颜⾊、、亮度与对度、、等特效。
6. 是在⼆维基础上增加Z 轴向,形成X 、Y 、Z 的三维空间。
⼆、选择题:(每⼀个题只有⼀个正确答案)把正确答案写在括号内(20分,每题2分)1、PAL 制式电视系统的帧速率为() A 、24帧/秒 B 、20帧/秒 C 、25帧/秒 D 、30帧/秒2、对于视频制式的使⽤,下列描述那个是不正确的?()A .美国,加拿⼤采⽤NTFS 制式B .⽇本采⽤PAL 制式C .欧洲采⽤NTFS 制式D .中国采⽤PAL 制式3、下列关于亲⼦关系哪种说法是正确的?()A 、⽗对象影响⼦对象运动B 、⼦对象运动不影响⽗对象C 、⽬标可以同时为⽗对象和⼦对象D 、⽬标甲可以同时为⽬标⼄的⽗对象和⼦对象4、After Effects 中同时能有⼏个⼯程(Project) 处于开启状态? ()A 、有2个B 、只能有1个C 、可以⾃⼰设定D 、只要有⾜够的空间,不限定项⽬开启的数⽬ 5、按下⼤写锁定键后?()A .素材更新,其它不变B .层更新,其它不变C.层和合成图像窗⼝更新,其它不变 D .所有素材.层.合成图像窗⼝都停⽌更新6、可以在下列哪个窗⼝中通过调整参数精确控制合成中的对象?() A .项⽬窗⼝ B .合成窗⼝ C .时间线窗⼝ D .信息窗⼝7、After Effects 中同时能有⼏个⼯程(Project) 处于开启状态?A 、有2个B 、只能有1个C 、可以⾃⼰设定D 、只要有⾜够的空间,不限定项⽬开启的数⽬8、After Effects 中同时能有⼏个项⽬⼯程处于开启状态? A .有2 个 B .只能有1 个 C .可以⾃⼰设定D .只要有⾜够的空间,不限定项⽬开启的数⽬9、如果要连续向After Effects 中导⼊多个素材,应该选择下列哪个命令?()A .导⼊/⽂件夹B . Project 窗⼝中双击C .导⼊/多个⽂件⾼三年级《AE影视后期制作》试卷第3页,共4页⾼三年级《AE影视后期制作》试卷第4页,共4页D.导⼊/⽂件10、使⽤椭圆遮罩⼯具绘制mask时,()A、按住Shift键拖动句柄,可以从遮罩中⼼开始建⽴遮罩B、按住Ctrl键拖动句柄,可以从遮罩中⼼开始建⽴遮罩C、按住Alt键拖动句柄,可以从遮罩中⼼开始建⽴遮罩D、按住Shift+Alt键拖动句柄,可以从遮罩中⼼开始建⽴遮罩三判断题:(20分,每题2分)1、PS是最流⾏、最常⽤、最⽅便的图像处理软件,在影视后期中的应⽤⼏乎不可或缺。
上海市崇明县民本中学2015届高三上学期期中考试数学试题
页1第上海市崇明县民本中学2015届高三上学期期中考试数学试题 数学试卷考生注意: 1.答卷前,考生务必在答题纸上将班级、考号、姓名等填写清楚. 2.本试卷共有23道题,满分150分,考试时间120分钟.一.填空题(本大题满分56分)本大题共有14题,考生应在答题纸相应编号的空格内直接填写结果,每个空格填对得4分,否则一律得零分.1. 设复数(2)117z i i -=+(i 为虚数单位),则z = .2.若函数()23xf x =+的图像与()g x 的图像关于直线y x =对称,则(5)g = . 3.已知(0,)απ∈且tan()4πα+=,则α= .4.若关于x 的一元二次方程0)2lg(222=-+-a a x x 两根异号,则实数a 的取值范围是 . 5.双曲线2221(0)y x b b -=>的一条渐近线方程为y =,则b =________.6.已知向量a 、b 的夹角为150︒13+ .7. 在二项式7)1(+ax )(R a ∈的展开式中,3x 的系数为21,则363lim()n n a a a →∞+++的值是__________.8. 行列式111xm x +-的值在[1,1]x ∈-上恒小于0,则实数m 的取值范围是__________.;9. 在北纬45圈上有B 、A 两点,若该纬度圈上B 、A 两点间的劣弧长为R R (42π为地球的半径),则B 、A 两点间的球面距离是 .10. 某公司一年购买某种货物600吨,每次都购买x 吨,运费为3万元/次,一年的总存储费 用为2x 万元,若要使一年的总运费与总存储费用之和最小,则每次需购买 吨.11. 已知双曲线22221x y a b -=与抛物线28y x =有一个公共的焦点F ,且两曲线的一个交点为P ,5PF =,则该双曲线的两条渐近线方程为 .12.设ABC ∆的三个内角A B C 、、所对的边长依次为a b c 、、,若ABC ∆的面积为S ,且22()S a b c =--,则sin 1cos AA =- .(数值)13.设函数x c x b x f sin cos )(+=的图象经过两点(0,1)和(2π,对一切[]0,x π∈,页2第D 1C 1B 1A 1DCE |()|3f x a +≤恒成立,则实数a 的的取值范围______14.如图,1P是一块半径为1的半圆形纸板,在1P 的左下端剪去一个半径为21的半圆得到图形2P ,然后依次剪去一个更小的半圆(其直径是前一个被剪掉半圆的半径)可得图形,,,,43n P P P ,记纸板n P 的面积为n S ,则=∞→n n S lim _____________.二、选择题(本大题满分20分)本大题共有4题,每题有且只有一个正确答案,考生应在答题纸的相应编号上,填上正确的答案,选对得5分,否则一律得零分.15. 下面是关于复数21z i =-+的四个命题: ①2z =; ②22z i =; ③z 的共轭复数为1i +; ④z 的虚部为1-.其中正确的命题…………………………………………………………………( ) A .②③ B .①② C .②④ D .③④16.一无穷等比数列{}n a 各项的和为32,第二项为13,则该数列的公比为 ( ) (A )13. (B )23. (C )13-. (D )13或23.17. 设锐角ABC ∆的三内角A 、B 、C 所对边的边长分别为a 、b 、c ,且 1=a ,A B 2=, 则b 的取值范围为 ………( ). )(A ()3,2 . )(B ()3,1 .)(C()2,2 . )(D ()2,0 .18.定义一种新运算:,(),()b a b a b a a b ≥⎧⊗=⎨<⎩,已知函数24()(1)log f x x x =+⊗,若函数()()g x f x k =-恰有两个零点,则k 的取值范围为 ………( ).)(A(]1,2 . )(B (1,2) . )(C (0,2) . )(D (0,1) .三、解答题(本大题满分74分)本大题共5题,解答下列各题必须在答题纸相应编号的规定区域内写出必要的步骤 . 19.(本题满分12分)本题共有2个小题,第1小题满分6分,第2小题满分6分 . 如图所示,在棱长为2的正方体1111ABCD A B C D -中,E ,F 分别为线段1DD ,BD 的 中点.(1)求三棱锥E ADF -的体积; (2)求异面直线EF 与BC 所成的角.。
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2015年秋季学期《After Effects CS4案例教程》期中考试试题14计算机班姓名总分
一、选择题(每道题只有一个正确的答案,请把答案写在下面相应的表格内,每题2分,共40分)
1.创建合成的组合键是?()
A.Ctrl+N B. Ctrl+O C. Ctrl+I D. Ctrl+A
2.Composition Settings(合成设置)界面中,哪一项设置可锁定画面的宽高比?()
A. Pixel Aspect Rate
B. ResoLution
C. Lock Aspect Ratio to 4:3(1.33)
D. Frame Rate
3.输出模块中,哪项设置决定输出文件的扩展名?()
A. Format
B. Post-Render Action
C. Format Options
D. Stretch
4. PAL制影片的帧速率是?()
A. 24帧/秒
B. 25帧/秒
C. 29.97帧/秒
D. 30帧/秒
5.8bit位深度的含义是?()
A. 每个通道使用2的4次方量化
B. 每个通道使用2的8次方量化
C. 每个通道使用8的2次方量化
D. 每个通道使用4的2次方量化
6. 关于视频制式的使用,下列描述那些是正确的?()
A. 美国,加拿大采用SECAM制式
B. 日本采用PAL制式
C. 欧洲采用NTSC制式
D. 中国采用PAL制式
7. After Effects中同时能有几个工程(Project)处于开启状态()
A. 有2个
B. 只能有1个
C. 可以自己设定
D. 只要有足够的空间,不限定项目开启的数目
8. After Effects属于下列哪种工作方式的合成软件?()。
A. 使用流程图节点进行工作
B. 面向层进行工作
C. 使用轨道进行工作
D. 综合上面所有的工作方式
9. After Effects使用的时间编码是?()。
A. SMPTE
B. Drop Frame
C. NTSC
D. PAL 10. 可以带有Alpha通道色彩设定是?()
A. 8 bit色彩深度
B. 16 bit色彩深度
C. 24 bit色彩深度
D. 32 bit色彩深度
11.After Effects 对合成进行预览使用小键盘的哪个键?()
A. 0
B. 1
C. 2
D. 3
12.视频编辑中,最小单位是()。
A. 小时
B. 分钟
C. 秒
D. 帧
13.After Effects 对于帧速率下列说法正确的是()。
A. 所谓帧速率是在播放时每秒钟播放多少帧
B. 所谓帧速率是指在播放时每分钟播放多少帧
C. 所谓帧速率是指在播放时每小时播放多少帧
D.所谓帧速率是指在播放时每10秒播放多少帧
14.快速展开图层Position属性的快捷键是()
A. T
B. U
C. P
D. R
15.快速展开图层Rotation属性的快捷键是()
A. T
B. Y
C. P
D. R
16.创建固态层的组合键是()
A.Ctrl+Y
B. Ctrl+A
C. Ctrl+B
D. Ctrl+F
17.使用矩形遮罩工具绘制mask时()
A. 按住Shift键拖动句柄,可以产生正方形遮罩
B. 按住Ctrl键拖动句柄,可以产生正方形遮罩
C. 按住Alt键拖动句柄,可以产生正方形遮罩
D. 按住Ctrl + Alt键拖动句柄,可以产生正方形遮罩
18.可以在下列哪个窗口中通过调整参数精确控制对象?()
A. 项目窗口
B. 合成图像窗口
C. 时间线窗口
D. 信息窗口
19.After Effects 原文件格式是()
A. *.psd
B. *.ppj
C. *.aep
D. *.ai
20.使运动的层产生真实的运动模糊现象,下列哪种方法是正确的?()
A. 打开运动模糊开关
B. 应用Each特效
C. 应用Direction Blur特效
D. 应用Motion Blur特效
二、填空题(每空1分,共10分)
1.After Effects CS4是Adobe公司的一款拥有广泛用户群的_____________________。
2.__________是After Effects插件中的一种,由Trapcode公司推出,该插件可以用来制作放射性光线。
3.世界上主要使用的电视制式有___________、 __________、__________三种。
4.在After Effects中,滤镜也称作__________。
5.After Effects中动画有___________、 __________、__________三种。
6. 创建一个调节层的组合键是______________。
三、判断题。
(每题1分,共10分)
1.PAL制式的标准分辨率是720×576px()
2.高清晰度电视就是清晰度高的电视()
3.在Comp(合成)窗口中,可以对素材进行移动、缩放、旋转、建立遮罩等操作()
4.在Timeline(时间线)窗口中可以执行为图层添加特效、调整图层参数、设置图层叠加方式等针对图层的操作()
5.当关键帧被选中时,关键帧呈灰色,末被选中时呈黄色。
()
6.导入序列文件时,只要勾选(序列)复选项,序列文件就会被一次性地导入。
()
7.使用组合键Ctrl+Alt+I,能打开导入多个文件对话框,通过该对话框能导入多个文件。
()
8.遮罩(Mask)是用于修改层Alpha通道的一个路径或者轮廓。
()
9.软件的版本固定以后,滤镜的数量就固定了。
()
10.动画的制作不一定使用关键帧。
()
四、简答题(每题5分,共25分)
1.After Effects可应用在哪些领域?
2.简述After Effects CS4的基本操作流程。
3.After Effects CS4中支持的视频文件格式有哪几种?
4.什么是合成?怎样创建合成?
5. 什么是固态层?怎样创建固态层?怎样设置固态层的颜色?
五、操作题。
(共15分)
要求制作一个图片由小到大逐渐放大的动画,动画的持续时间为6秒,输出成avi 格式。
(请写出操作步骤)。