七年级下同步练习参考答案
部编版七年级下册语文同步练习8 土地的誓言(含答案)
8土地的誓言知能演练活用夯基达标1.下列词语中加点字的注音全都正确的一项是()A.挚.痛(zhì)嗥.鸣(háo)斑斓.(lán)B.谰.语(lán) 怪诞.(dàn) 亘.古(gèng)C.田垄.(lěng) 污秽.(huì) 镐.头(gǎo)D.默契.(qiè) 泛滥.(làn) 蚱.蜢(zhà)2.依次填入下列句子横线处的词语,恰当的一项是()(1)我的手掌一接近土地,心就变得。
(2)在春天,东风吹起的时候,土壤的香气便在田野里。
(3)禾稻的香气是的,碾着新谷的场院辘辘地响着,多么美丽,多么丰饶……A.平静飘荡热烈B.安静飘起热烈C.平静飘起强烈D.安静飘荡强烈3.下列句子中没有运用修辞手法的一项是()A.我想起红布似的高粱,金黄的豆粒,黑色的土地,红玉的脸庞,黑玉的眼睛,斑斓的山雕,奔驰的鹿群,带着松香气味的煤块,带着赤色的足金。
B.土地是我的母亲,我的每一寸皮肤,都有着土粒。
C.原野到处有一种鸣叫,天空清亮透明,劳动的声音从这头响到那头。
D.黑的山峰像巨人一样矗立在面前。
4.在括号中填写恰当的关联词。
我总是被这种声音所缠绕,()我走到哪里,()我睡得很沉,()在睡梦中突然惊醒的时候,我()会突然想到是我应该回去的时候了。
5.下列对课文的分析错误的一项是()A.这是一篇抒情散文,充溢着饱满、深沉的爱国热情。
B.“土地的誓言”应理解为“土地自身发出的誓言”。
C.文章大量运用排比,造成连贯的、逐渐增强的气势。
D.作者将倾诉的对象拟人化,以“她”而不是“它”相称,隐含将土地比作“母亲”的意思。
课内品读阅读下面的文字,完成第6~9题。
对于广大的关东原野,我心里怀着①的热爱。
我无时无刻不听见她呼唤我的名字,无时无刻不听见她召唤我回去。
我有时把手放在胸膛上,知道我的心是跳跃的。
我的心还在喷涌着血液吧,因为我常常感到它在②着一种热情。
初一下册语文同步练习册答案必备
初一下册语文同步练习册答案必备学习必须与实干相结合。
语文要想成绩提高,多记多看多做题是错不了的,书山有路勤为径,学海无涯苦作舟,况且勤能补拙。
下面是小编给大家整理的一些初一下册语文同步练习册的答案,希望对大家有所帮助。
同步练习册语文七年级下册答案基础巩固2.⑴.属于⑵.曾经⑶.给⑷.完成⑸.名词用作动词,意思以宾客之礼相待⑹.语气助词,表停顿⑺.跟随⑻.承受⑼.最后⑽.语气词,放在句首,表示将发议论⑾完全⑿牵、引;拜访⒀相当⒁对……感到诧异3.A 这……的样子 B 比在到4.略5.北宋;介甫;半山;政治;文学6.D7.⑴.“扳”通“攀”,pān,牵,引⑵.①观看,观赏。
②完成。
③文采和道理④有人⑶.略。
⑷. “仲永生五年,未尝识书具,忽啼求之。
父异焉,借旁近与之,即书诗四句, 并自为其名。
”“自是指物作诗立就,其文理皆有可观者。
” ⑸. 父利其然也,日扳仲永环谒于邑人,不使学。
⑹.表明其家庭绝无诗礼的熏陶。
⑺.如①忽啼求之②即书诗四句③自是指物作诗立就⑻.父利其然也。
日扳仲永环谒于邑人。
⑼.人的才能并非一世不变,后天的教育和学习在一个人的成长中是十分重要的。
人教版七年级语文下册配套练习册参考答案《童年的朋友》答案随文练习一、给下面的加点字注上正确的读音。
1、(1)sì(2)shì(3)sì2、(1)fú(2)fó(3)fó3、(1)hé(2)huo(3)hè4、(1)jiào(2)jué(3)jué二、题目略。
1、(惩)罚:处罚惩前毖后严惩不贷2、敏(捷):快捷足先登捷报频传3、(困)苦:困难困兽犹斗困惑不解三、先解释,后造句。
1、自言自语:自己对自己说话。
造句:略2、五光十色:形容色彩鲜艳,式样繁多。
造句:略四、写出下列词语的近义词。
(1)颤动:抖动、震动、震荡(2)夸耀:炫耀、显耀、标榜(3)闪耀:闪射、闪烁、闪光(4)坚固:牢固、结实、坚实(5)柔和:温和、温柔、柔顺(6)快乐:愉快、愉悦、高兴五、题目略。
人教数学七年级下全册同步练习-初中数学七年级下册全册同步练习题(含答案,共119页)
第五章 相交线与平行线1相交线学习要求1.能从两条直线相交所形成的四个角的关系入手,理解对顶角、互为邻补角的概念,掌握对顶角的性质.2.能依据对顶角的性质、邻补角的概念等知识,进行简单的计算.课堂学习检测一、填空题1.如果两个角有一条______边,并且它们的另一边互为____________,那么具有这种关系的两个角叫做互为邻补角.2.如果两个角有______顶点,并且其中一个角的两边分别是另一个角两边的___________ ________,那么具有这种位置关系的两个角叫做对顶角. 3.对顶角的重要性质是_________________.4.如图,直线AB 、CD 相交于O 点,∠AOE =90°.(1)∠1和∠2叫做______角;∠1和∠4互为______角; ∠2和∠3互为_______角;∠1和∠3互为______角; ∠2和∠4互为______角.(2)若∠1=20°,那么∠2=______;∠3=∠BOE -∠______=______°-______°=______°; ∠4=∠______-∠1=______°-______°=______°. 5.如图,直线AB 与CD 相交于O 点,且∠COE =90°,则(1)与∠BOD 互补的角有________________________; (2)与∠BOD 互余的角有________________________; (3)与∠EOA 互余的角有________________________; (4)若∠BOD =42°17′,则∠AOD =__________; ∠EOD =______;∠AOE =______. 二、选择题6.图中是对顶角的是( ).7.如图,∠1的邻补角是( ).(A)∠BOC (B)∠BOC 和∠AOF (C)∠AOF (D)∠BOE 和∠AOF 8.如图,直线AB 与CD 相交于点O ,若AOD AOC ∠=∠31,则∠BOD 的度数为( ). (A)30° (B)45° (C)60°(D)135°9.如图所示,直线l1,l2,l3相交于一点,则下列答案中,全对的一组是( ).(A)∠1=90°,∠2=30°,∠3=∠4=60°(B)∠1=∠3=90°,∠2=∠4=30°(C)∠1=∠3=90°,∠2=∠4=60°(D)∠1=∠3=90°,∠2=60°,∠4=30°三、判断正误10.如果两个角相等,那么这两个角是对顶角.( ) 11.如果两个角有公共顶点且没有公共边,那么这两个角是对顶角.( ) 12.有一条公共边的两个角是邻补角.( ) 13.如果两个角是邻补角,那么它们一定互为补角.( ) 14.对顶角的角平分线在同一直线上.( ) 15.有一条公共边和公共顶点,且互为补角的两个角是邻补角.( )综合、运用、诊断一、解答题16.如图所示,AB,CD,EF交于点O,∠1=20°,∠BOC=80°,求∠2的度数.17.已知:如图,直线a,b,c两两相交,∠1=2∠3,∠2=86°.求∠4的度数.18.已知:如图,直线AB,CD相交于点O,OE平分∠BOD,OF平分∠COB,∠AOD∶∠DOE=4∶1.求∠AOF的度数.19.如图,有两堵围墙,有人想测量地面上两堵围墙内所形成的∠AOB的度数,但人又不能进入围墙,只能站在墙外,请问该如何测量?拓展、探究、思考20.如图,O是直线CD上一点,射线OA,OB在直线CD的两侧,且使∠AOC=∠BOD,试确定∠AOC与∠BOD是否为对顶角,并说明你的理由.21.回答下列问题:(1)三条直线AB,CD,EF两两相交,图形中共有几对对顶角(平角除外)?几对邻补角?(2)四条直线AB,CD,EF,GH两两相交,图形中共有几对对顶角(平角除外)?几对邻补角?(3)m条直线a1,a2,a3,…,a m-1,a m相交于点O,则图中一共有几对对顶角(平角除外)?几对邻补角?2 垂线学习要求1.理解两条直线垂直的概念,掌握垂线的性质,能过一点作已知直线的垂线.2.理解点到直线的距离的概念,并会度量点到直线的距离.课堂学习检测一、填空题1.当两条直线相交所成的四个角中,有一个角是直角时,就说这两条直线______,其中一条直线叫做另一条直线的______线,它们的交点叫做______.2.垂线的性质性质1:平面内,过一点____________与已知直线垂直.性质2:连接直线外一点与直线上各点的_________中,_________最短.3.直线外一点到这条直线的__________________叫做点到直线的距离.4.如图,直线AB,CD互相垂直,记作______;直线AB,CD互相垂直,垂足为O点,记作____________;线段PO的长度是点_________到直线_________的距离;点M到直线AB的距离是_______________.二、按要求画图5.如图,过A点作CD⊥MN,过A点作PQ⊥EF于B.图a 图b 图c6.如图,过A点作BC边所在直线的垂线EF,垂足是D,并量出A点到BC边的距离.图a 图b 图c7.如图,已知∠AOB及点P,分别画出点P到射线OA、OB的垂线段PM及PN.图a 图b 图c8.如图,小明从A村到B村去取鱼虫,将鱼虫放到河里,请作出小明经过的最短路线.综合、运用、诊断一、判断下列语句是否正确(正确的画“√”,错误的画“×”)9.两条直线相交,若有一组邻补角相等,则这两条直线互相垂直.( ) 10.若两条直线相交所构成的四个角相等,则这两条直线互相垂直. ( ) 11.一条直线的垂线只能画一条. ( ) 12.平面内,过线段AB 外一点有且只有一条直线与AB 垂直. ( ) 13.连接直线l 外一点到直线l 上各点的6个有线段中,垂线段最短. ( ) 14.点到直线的距离,是过这点画这条直线的垂线,这点与垂足的距离. ( ) 15.直线外一点到这条直线的垂线段,叫做点到直线的距离. ( ) 16.在三角形ABC 中,若∠B =90°,则AC >AB . ( )二、选择题17.如图,若AO ⊥CO ,BO ⊥DO ,且∠BOC =α,则∠AOD 等于( ).(A)180°-2α (B)180°-α(C)α2190+︒ (D)2α-90°18.如图,点P 为直线m 外一点,点P 到直线m 上的三点A 、B 、C 的距离分别为P A =4cm ,PB =6cm ,PC =3cm ,则点P 到直线m 的距离为( ). (A)3cm (B)小于3cm (C)不大于3cm (D)以上结论都不对19.如图,BC ⊥AC ,CD ⊥AB ,AB =m ,CD =n ,则AC 的长的取值范围是( ).(A)AC <m (B)AC >n (C)n ≤AC ≤m (D)n <AC <m 20.若直线a 与直线b 相交于点A ,则直线b 上到直线a 距离等于2cm的点的个数是( ). (A)0 (B)1 (C)2 (D)3 21.如图,AC ⊥BC 于点C ,CD ⊥AB 于点D ,DE ⊥BC于点E ,能表示点到直线(或线段)的距离的线段有( ). (A)3条 (B)4条 (C)7条 (D)8条 三、解答题22.已知:OA ⊥OC ,∠AOB ∶∠AOC =2∶3.求∠BOC 的度数.23.已知:如图,三条直线AB ,CD ,EF 相交于O ,且CD ⊥EF ,∠AOE =70°,若OG 平分∠BOF .求∠DOG .拓展、探究、思考24.已知平面内有一条直线m 及直线外三点A ,B ,C ,分别过这三个点作直线m 的垂线,想一想有几个不同的垂足?画图说明.25.已知点M ,试在平面内作出四条直线l 1,l 2,l 3,l 4,使它们分别到点M 的距离是1.5cm .·M26.从点O 引出四条射线OA ,OB ,OC ,OD ,且AO ⊥BO ,CO ⊥DO ,试探索∠AOC与∠BOD 的数量关系.27.一个锐角与一个钝角互为邻角,过顶点作公共边的垂线,若此垂线与锐角的另一边构成75直角,与钝角的另一边构成直73角,则此锐角与钝角的和等于直角的多少倍?3 同位角、内错角、同旁内角学习要求当两条直线被第三条直线所截时,能从所构成的八个角中识别出哪两个角是同位角、内错角及同旁内角.课堂学习检测一、填空题1.如图,若直线a,b被直线c所截,在所构成的八个角中指出,下列各对角之间是属于哪种特殊位置关系的角?(1)∠1与∠2是_______;(2)∠5与∠7是______;(3)∠1与∠5是_______;(4)∠5与∠3是______;(5)∠5与∠4是_______;(6)∠8与∠4是______;(7)∠4与∠6是_______;(8)∠6与∠3是______;(9)∠3与∠7是______;(10)∠6与∠2是______.2.如图2所示,图中用数字标出的角中,同位角有______;内错角有______;同旁内角有______.3.如图3所示,(1)∠B和∠ECD可看成是直线AB、CE被直线______所截得的_______角;(2)∠A和∠ACE可看成是直线_______、______被直线_______所截得的______角.4.如图4所示,(1)∠AED和∠ABC可看成是直线______、______被直线______所截得的_______角;(2)∠EDB和∠DBC可看成是直线______、______被直线_______所截得的______角;(3)∠EDC和∠C可看成是直线_______、______被直线______所截得的______角.综合、运用、诊断一、选择题5.已知图①~④,图①图②图③图④在上述四个图中,∠1与∠2是同位角的有( ).图2 图3 图4(A)①②③④(B)①②③(C)①③(D)①6.如图,下列结论正确的是( ).(A)∠5与∠2是对顶角(B)∠1与∠3是同位角(C)∠2与∠3是同旁内角(D)∠1与∠2是同旁内角7.如图,∠1和∠2是内错角,可看成是由直线( ).(A)AD,BC被AC所截构成(B)AB,CD被AC所截构成(C)AB,CD被AD所截构成(D)AB,CD被BC所截构成8.如图,直线AB,CD与直线EF,GH分别相交,图中的同旁内角共有( ).(A)4对(B)8对(C)12对(D)16对拓展、探究、思考一、解答题9.如图,三条直线两两相交,共有几对对顶角?几对邻补角?几对同位角?几对内错角?几对同旁内角?4 平行线及平行线的判定学习要求1.理解平行线的概念,知道在同一平面内两条直线的位置关系,掌握平行公理及其推论.2.掌握平行线的判定方法,能运用所学的“平行线的判定方法”,判定两条直线是否平行.用作图工具画平行线,从而学习如何进行简单的推理论证.课堂学习检测一、填空题1.在同一平面内,______的两条直线叫做平行线.若直线a与直线b平行,则记作______.2.在同一平面内,两条直线的位置关系只有______、______.3.平行公理是:_______________________________________________________________.4.平行公理的推论是如果两条直线都与______,那么这两条直线也______.即三条直线a,b,c,若a∥b,b∥c,则______.5.两条直线平行的条件(除平行线定义和平行公理推论外):(1)两条直线被第三条直线所截,如果____________,那么这两条直线平行.这个判定方法1可简述为:____________,两直线平行.(2)两条直线被第三条直线所截,如果____________,那么____________.这个判定方法2可简述为:____________,____________.(3)两条直线被第三条直线所截,如果____________,那么____________.这个判定方法3可简述为:____________,____________.二、根据已知条件推理6.已知:如图,请分别依据所给出的条件,判定相应的哪两条直线平行?并写出推理的根据.(1)如果∠2=∠3,那么____________.(____________,____________)(2)如果∠2=∠5,那么____________.(____________,____________)(3)如果∠2+∠1=180°,那么____________.(____________,____________)(4)如果∠5=∠3,那么____________.(____________,____________)(5)如果∠4+∠6=180°,那么____________.(____________,____________)(6)如果∠6=∠3,那么____________.(____________,____________)7.已知:如图,请分别根据已知条件进行推理,得出结论,并在括号内注明理由.(1)∵∠B=∠3(已知),∴______∥______.(____________,____________)(2)∵∠1=∠D(已知),∴______∥______.(____________,____________)(3)∵∠2=∠A(已知),∴______∥______.(____________,____________)(4)∵∠B+∠BCE=180°(已知),∴______∥______.(____________,____________)综合、运用、诊断一、依据下列语句画出图形8.已知:点P是∠AOB内一点.过点P分别作直线CD∥OA,直线EF∥OB.9.已知:三角形ABC及BC边的中点D.过D点作DF∥CA交AB于M,再过D点作DE∥AB交AC于N点.二、解答题10.已知:如图,∠1=∠2.求证:AB∥CD.(1)分析:如图,欲证AB∥CD,只要证∠1=______.证法1:∵∠1=∠2,(已知)又∠3=∠2,( )∴∠1=_______.( )∴AB∥CD.(___________,___________)(2)分析:如图,欲证AB∥CD,只要证∠3=∠4.证法2:∵∠4=∠1,∠3=∠2,( )又∠1=∠2,(已知)从而∠3=_______.( )∴AB∥CD.(___________,___________)11.绘图员画图时经常使用丁字尺,丁字尺分尺头、尺身两部分,尺头的里边和尺身的上边应平直,并且一般互相垂直,也有把尺头和尺身用螺栓连接起来,可以转动尺头,使它和尺身成一定的角度.用丁字尺画平行线的方法如下面的三个图所示.画直线时要按住尺身,推移丁字尺时必须使尺头靠紧图画板的边框.请你说明:利用丁字尺画平行线的理论依据是什么?拓展、探究、思考12.已知:如图,CD ⊥DA ,DA ⊥AB ,∠1=∠2.试确定射线DF 与AE 的位置关系,并说明你的理由.(1)问题的结论:DF ______AE .(2)证明思路分析:欲证DF ______AE ,只要证∠3=______. (3)证明过程:证明:∵CD ⊥DA ,DA ⊥AB ,( )∴∠CDA =∠DAB =______°.(垂直定义) 又∠1=∠2,( )从而∠CDA -∠1=______-______,(等式的性质) 即∠3=___.∴DF ___AE .(____,____)13.已知:如图,∠ABC =∠ADC ,BF 、DE 分别平分∠ABC 与∠ADC .且∠1=∠3.求证:AB ∥DC .证明:∵∠ABC =∠ADC ,.2121ADC ABC ∠=∠∴( ) 又∵BF 、DE 分别平分∠ABC 与∠ADC ,.212,211ADC ABC ∠=∠∠=∠∴ ( ) ∴∠______=∠______.( )∵∠1=∠3,( ) ∴∠2=∠______.(等量代换) ∴______∥______.( )14.已知:如图,∠1=∠2,∠3+∠4=180°.试确定直线a 与直线c 的位置关系,并说明你的理由.(1)问题的结论:a ______c .(2)证明思路分析:欲证a ______c ,只要证______∥______且______∥______. (3)证明过程:证明:∵∠1=∠2,( )∴a ∥______.(________,________)① ∵∠3+∠4=180°,( )∴c ∥______.(________,________)② 由①、②,因为a ∥______,c ∥______, ∴a ______c .(________,________)5 平行线的性质学习要求1.掌握平行线的性质,并能依据平行线的性质进行简单的推理.2.了解平行线的判定与平行线的性质的区别.3.理解两条平行线的距离的概念.课堂学习检测一、填空题1.平行线具有如下性质:(1)性质1:______被第三条直线所截,同位角______.这个性质可简述为两直线______,同位角______.(2)性质2:两条平行线__________________,_______相等.这个性质可简述为_____________,_____________.(3)性质3:__________________,同旁内角______.这个性质可简述为_____________,__________________.2.同时______两条平行线,并且夹在这两条平行线间的______________叫做这两条平行线的距离.二、根据已知条件推理3.如图,请分别根据已知条件进行推理,得出结论,并在括号内注明理由.(1)如果AB∥EF,那么∠2=______.理由是____________________________________.(2)如果AB∥DC,那么∠3=______.理由是____________________________________.(3)如果AF∥BE,那么∠1+∠2=______.理由是______________________________.(4)如果AF∥BE,∠4=120°,那么∠5=______.理由是________________________.4.已知:如图,DE∥AB.请根据已知条件进行推理,分别得出结论,并在括号内注明理由.(1)∵DE∥AB,( )∴∠2=______.(__________,__________)(2)∵DE∥AB,( )∴∠3=______.(__________,__________)(3)∵DE∥AB( ),∴∠1+______=180°.(______,______)综合、运用、诊断一、解答题5.如图,∠1=∠2,∠3=110°,求∠4.解题思路分析:欲求∠4,需先证明______∥______.解:∵∠1=∠2,( )∴______∥______.(__________,__________)∴∠4=______=______°.(__________,__________)6.已知:如图,∠1+∠2=180°.求证:∠3=∠4.证明思路分析:欲证∠3=∠4,只要证______∥______.证明:∵∠1+∠2=180°,( )∴______∥______.(__________,__________)∴∠3=∠4.(______,______)7.已知:如图,AB∥CD,∠1=∠B.求证:CD是∠BCE的平分线.证明思路分析:欲证CD是∠BCE的平分线,只要证______=______.证明:∵AB∥CD,( )∴∠2=______.(____________,____________)但∠1=∠B,( )∴______=______.(等量代换)即CD是________________________.8.已知:如图,AB∥CD,∠1=∠2.求证:BE∥CF.证明思路分析:欲证BE∥CF,只要证______=______.证明:∵AB∥CD,( )∴∠ABC=______.(____________,____________)∵∠1=∠2,( )∴∠ABC-∠1=______-______,( )即______=______.∴BE∥CF.(__________,__________)9.已知:如图,AB∥CD,∠B=35°,∠1=75°.求∠A的度数.解题思路分析:欲求∠A,只要求∠ACD的大小.解:∵CD∥AB,∠B=35°,( )∴∠2=∠______=_______°.(____________,____________)而∠1=75°,∴∠ACD=∠1+∠2=______°.∵CD∥AB,( )∴∠A+______=180°.(____________,____________)∴∠A=_______=______.10.已知:如图,四边形ABCD 中,AB ∥CD ,AD ∥BC ,∠B =50°.求∠D 的度数.分析:可利用∠DCE 作为中间量过渡. 解法1:∵AB ∥CD ,∠B =50°,( )∴∠DCE =∠_______=_______°. (____________,______) 又∵AD ∥BC ,( )∴∠D =∠______=_______°.(____________,____________)想一想:如果以∠A 作为中间量,如何求解? 解法2:∵AD ∥BC ,∠B =50°,( )∴∠A +∠B =______.(____________,____________)即∠A =______-______=______°-______°=______°. ∵DC ∥AB ,( )∴∠D +∠A =______.(_____________,_____________) 即∠D =______-______=______°-______°=______°.11.已知:如图,AB ∥CD ,AP 平分∠BAC ,CP 平分∠ACD ,求∠APC 的度数.解:过P 点作PM ∥AB 交AC 于点M .∵AB ∥CD ,( )∴∠BAC +∠______=180°.( ) ∵PM ∥AB ,∴∠1=∠_______,( )且PM ∥_______.(平行于同一直线的两直线也互相平行) ∴∠3=∠______.(两直线平行,内错角相等) ∵AP 平分∠BAC ,CP 平分∠ACD ,( )∠=∠∴211______,∠=∠214______.( ) 90212141=∠+∠=∠+∠∴ACD BAC .( )∴∠APC =∠2+∠3=∠1+∠4=90°.( ) 总结:两直线平行时,同旁内角的角平分线______.拓展、探究、思考12.已知:如图,AB ∥CD ,EF ⊥AB 于M 点且EF 交CD 于N 点.求证:EF ⊥CD .13.如图,DE∥BC,∠D∶∠DBC=2∶1,∠1=∠2,求∠E的度数.14.问题探究:(1)如果一个角的两条边与另一个角的两条边分别平行,那么这两个角的大小有何关系?举例说明.(2)如果一个角的两边与另一个角的两边分别垂直,那么这两个角的大小有何关系?举例说明.15.如图,AB∥DE,∠1=25°,∠2=110°,求∠BCD的度数.16.如图,AB,CD是两根钉在木板上的平行木条,将一根橡皮筋固定在A,C两点,点E 是橡皮筋上的一点,拽动E点将橡皮筋拉紧后,请你探索∠A,∠AEC,∠C之间具有怎样的关系并说明理由.(提示:先画出示意图,再说明理由).6 命题学习要求1.知道什么是命题,知道一个命题是由“题设”和“结论”两部分构成的.2.对于给定的命题,能找出它的题设和结论,并会把该命题写成“如果……,那么……”的形式.能判定该命题的真假.课堂学习检测一、填空题1.______一件事件的______叫做命题.2.许多命题都是由______和______两部分组成.其中题设是____________,结论是______ _____.3.命题通常写成“如果……,那么…….”的形式.这时,“如果”后接的部分是______,“那么”后接的部分是______.4.所谓真命题就是:如果题设成立,那么结论就______的命题.相反,所谓假命题就是:如果题设成立,不能保证结论______的命题.二、指出下列命题的题设和结论5.垂直于同一条直线的两条直线平行.题设是___________________________________________________________;结论是___________________________________________________________.6.同位角相等,两直线平行.题设是___________________________________________________________;结论是___________________________________________________________.7.两直线平行,同位角相等.题设是___________________________________________________________;结论是___________________________________________________________.8.对顶角相等.题设是___________________________________________________________;结论是___________________________________________________________.三、将下列命题改写成“如果……,那么……”的形式9.90°的角是直角.__________________________________________________________________.10.末位数字是零的整数能被5整除.__________________________________________________________________.11.等角的余角相等.__________________________________________________________________.12.同旁内角互补,两直线平行.__________________________________________________________________.综合、运用、诊断一、下列语句哪些是命题,哪些不是命题?13.两条直线相交,只有一个交点.( ) 14. 不是有理数.( )15.直线a与b能相交吗?( ) 16.连接AB.( )17.作AB⊥CD于E点.( ) 18.三条直线相交,有三个交点.( )二、判断下列各命题中,哪些命题是真命题?哪些是假命题?(对于真命题画“√”,对于假命题画“×”)19.0是自然数.( )20.如果两个角不相等,那么这两个角不是对顶角.( )21.相等的角是对顶角.( )22.如果AC=BC,那么C点是AB的中点.( )23.若a∥b,b∥c,则a∥c.( )24.如果C是线段AB的中点,那么AB=2BC.( )25.若x2=4,则x=2.( )26.若xy=0,则x=0.( )27.同一平面内既不重合也不平行的两条直线一定相交.( )28.邻补角的平分线互相垂直.( )29.同位角相等.( )30.大于直角的角是钝角.( )拓展、探究、思考31.已知:如图,在四边形ABCD中,给出下列论断:①AB∥DC;②AD∥BC;③AB=AD;④∠A=∠C;⑤AD=BC.以上面论断中的两个作为题设,再从余下的论断中选一个作为结论,并用“如果……,那么……”的形式写出一个真命题.答:_____________________________________________________________________.32.求证:两条平行线被第三条直线所截,内错角的平分线互相平行.7 平移学习要求了解图形的平移变换,知道一个图形进行平移后所得的图形与原图形之间所具有的联系和性质,能用平移变换有关知识说明一些简单问题及进行图形设计.课堂学习检测一、填空题1.如图所示,线段ON是由线段______平移得到的;线段DE是由线段______平移得到的;线段FG是由线段______平移得到的.2.如图所示,线段AB在下面的三个平移中(AB→A1B1→A2B2→A3B3),具有哪些性质.图a图b 图c(1)线段AB上所有的点都是沿______移动,并且移动的距离都________.因此,线段AB,A1B1,A2B2,A3B3的位置关系是____________________;线段AB,A1B1,A2B2,A3B3的数量关系是________________.(2)在平移变换中,连接各组对应点的线段之间的位置关系是______;数量关系是______.3.如图所示,将三角形ABC平移到△A′B′C′.图a 图b在这两个平移中:(1)三角形ABC的整体沿_______移动,得到三角形A′B′C′.三角形A′B′C′与三角形ABC的______和______完全相同.(2)连接各组对应点的线段即AA′,BB′,CC′之间的数量关系是__________________;位置关系是__________________.综合、运用、诊断一、按要求画出相应图形4.如图,AB∥DC,AD∥BC,DE⊥AB于E点.将三角形DAE平移,得到三角形CBF.5.如图,AB∥DC.将线段DB向右平移,得到线段CE.6.已知:平行四边形ABCD及A′点.将平行四边形ABCD平移,使A点移到A′点,得平行四边形A′B′C′D′.7.已知:五边形ABCDE及A′点.将五边形ABCDE平移,使A点移到A′点,得到五边形A′B′C′D′E′.拓展、探究、思考一、选择题8.如图,把边长为2的正方形的局部进行如图①~图④的变换,拼成图⑤,则图⑤的面积是( ).(A)18 (B)16 (C)12 (D)8二、解答题9.河的两岸成平行线,A,B是位于河两岸的两个车间(如图).要在河上造一座桥,使桥垂直于河岸,并且使A,B间的路程最短.确定桥的位置的方法如下:作从A到河岸的垂线,分别交河岸PQ,MN于F,G.在AG上取AE=FG,连接EB.EB交MN于D.在D处作到对岸的垂线DC,那么DC就是造桥的位置.试说出桥造在CD位置时路程最短的理由,也就是(AC+CD+DB)最短的理由.10.以直角三角形的三条边BC,AC,AB分别作正方形①、②、③,如何用①中各部分面积与②的面积,通过平移填满正方形③?你从中得到什么结论?第六章 实数6.1平方根学习要求1. 理解算术平方根和平方根的含义。
七年级下册语文初中同步练习册60答案
七年级下册语文初中同步练习册60答案1、23.下列各项中加点字注音都正确的一项是()[单选题] *A.酝酿(rùn)抖擞(sǒu)收敛(liǎn)神采奕奕(yì)B.贮蓄(zhù)坍塌(tān)怂恿(sǒnɡ)拈轻怕重(niān)(正确答案)C.虐待(nüè)棱镜(línɡ)附和(hè)参差不齐(cēn)D.镶嵌(xiānɡ)莅临(wèi)怅然(chànɡ)咄咄逼人(duō)2、1苏轼与辛弃疾合称为苏辛,同为豪放派代表。
[判断题] *对错(正确答案)3、1“念奴娇”“雨霖铃”是词牌名。
[判断题] *对错(正确答案)4、1“年貌虽小,其举止言谈不俗,身体面庞虽怯弱不胜,却有一段自然的风流态度,便知他有不足之症。
”这句话描写的是林黛玉的体貌神态。
[判断题] *对(正确答案)错5、1一人不排队挤上公交车,众人批评他:“不要挤嘛,讲一点儿社会公德。
”他嬉皮笑脸地回答:“我这是发扬雷锋的精神,一要有钻劲,二要有挤劲。
”这个挤公交的人语言幽默、得体。
[判断题] *对错(正确答案)6、下列对《红楼梦》中人物形象的解说,不正确的一项是( ) [单选题] *A.贾宝玉:性格叛逆,鄙视功名利禄,大胆质疑程朱理学。
B.林黛玉:生得倾国倾城貌,又有旷世诗才,是世界文学史上富有灵气的经典女性形象之一。
C.薛宝钗:堪称封建淑女的完美典范,品格端方,谨言慎行,举止娴雅。
D.贾母:贾代化之妻,出嫁前为金陵世族史侯家的小姐,后来成了贾家的最高统治者。
(正确答案)7、下列选项中加着重号字注音正确的一项是()[单选题] *A、膝盖xī懊丧sàn 荒林huāngB、稠密chóu 凫水fú蹊跷qiāo(正确答案)C、嬉笑xī恪守luò废墟xūD、璀璨cuǐ做窠cháo 沙漠mò8、1“总角之宴,言笑晏晏。
数学人教版七年级下册同步训练:8.2---8.4练习题含答案
8.2 消元——解二元一次方程组一、单选题1.用代入法解方程组{26345x y x y -=+=-较简单的方法是( ) A.消y B.消x C.消x 和消y 一样 D.无法确定2.若关于,x y 的二元一次方程组5,9,x y k x y k +=⎧⎨-=⎩①②的解也是二元一次方程236x y +=的解,则k 的值为( )A.34-B.34C.43D.43-3.已知32x y =⎧⎨=-⎩是方程组23ax by bx ay +=⎧⎨+=-⎩的解,则a b +的值是( )A .﹣1B .1C .﹣5D .54.方程组3276211x y x y +=⎧⎨-=⎩的解是( )A.15x y =-⎧⎨=⎩B.12x y =⎧⎨=⎩C.31x y =⎧⎨=-⎩D.212x y =⎧⎪⎨=⎪⎩5.用“代入消元法”解方程组2327y x x y =-⎧⎨-=⎩①②时,把①代入②正确的是( )A.3247x x -+=B.3247x x --=C.3227x x -+=D.3227x x --=6.若关于x 的方程243x m -=和2x m +=有相同的解,则m 的值是( ) A .10 B .10- C .8 D .8-7.以1,{1x y ==-为解的二元一次方程组是( )A. 0{1x y x y +=-= B. 0{1x y x y +=-=-C. 0{2x y x y +=-=D. 0{2x y x y +=-=-8.解方程组{332,266,x y x y +=-=①②用加减法消去y ,需要( )A.2⨯-①②B.32⨯+⨯①②C.23⨯⨯①-②D.2⨯+①②9.,a b 满足方程组{28,27,a b a b +=+=则b a -的值为( ) A.1 B.0 C.-1 D.2 二、填空题10.若{6,20,x y x y -=+=则32x y += .11.若关于,x y 的二元一次方程组{4,2x y k x y k-=+=的解也是二元一次方程36x y -=的解,则k = .12.方程34x y -=中,有一组解x 与y 互为相反数,则3x y +=_______. 13.方程组10216x y x y +=⎧⎨+=⎩的解是 .三、解答题14.用加减消元法解下列方程组: (1){2340,5;x y x y +=-=-①②(2){433,3215.x y x y +=-=①②15.对于任意实数,a b ,定义关于“⊗”的一种运算如下:2a b a b ⊗=+.例如:3423410.⊗=⨯+= (1)求25()⊗-的值;(2)若()2,x y ⊗-=且21,y x ⊗=-求x y +的值.参考答案1.答案:A由方程26x y -=,得26y x =-,故消y 更简单。
七年级下册语文第21课《古代诗歌五首 》同步练习(含答案)
七年级下册语文第21课《古代诗歌五首》同步练习一、基础知识1.下列加点字的注音不正确的一项是()A.念天地之悠悠,独怆.(chuàng)然而涕下!B.岱宗夫如何?齐鲁青未了.(le)。
C.荡胸生曾云,决眦.(zì)入归鸟。
D.莫笑农家腊酒浑,丰年留客足鸡豚.(tún)。
2.下列诗句中加点词的解释不正确的一项是()(不尽)A.独怆然....而涕下(悲伤的样子)B.齐鲁青未了C.自缘.身在最高层(因为)D.拄杖无时..夜叩门(没有时间)3.下列说法错误的一项是()A.《登幽州台歌》——陈子昂——唐——文学家B.《登飞来峰》——王安石——宋——唐宋八大家C.《望岳》——杜甫——唐——浪漫主义诗人D.《已亥杂诗》(其五)——龚自珍——清——思想家、文学家4.下列说法不正确的一项是()A.律诗是一种诗歌体裁,是近体诗的一种,常见的有五律和七律。
B.杜甫,字子美,是唐代伟大的现实主义诗人,被后人称为“诗圣”,与李白并称“李杜”。
C.“唐宋八大家”指的是唐代的韩愈、柳宗元和宋代的苏洵、苏轼、苏辙、王安石、欧阳修、陆游。
D.《己亥杂诗》(其五)是一首七言绝句,作者是清代的思想家、文学家龚自珍。
5.下列对《望岳》这首唐诗的内容理解正确的一项是()A.本诗中无一“望”字,却句句向岳而望,自近而远,由朝至暮,从泰山整体到泰山周围。
B.开篇一问一答,写泰山横跨齐鲁,郁郁葱葱,表现出泰山雄伟阔大的气势。
C.诗中三、四句写大自然把种种神奇秀丽的景致都集聚于泰山,泰山的白天晚上明暗不同。
D.诗中五、六句由动景到静景,写诗人仰见层云涌动、飞鸟还林,内心激荡不已。
6.下列对《登幽州台歌》理解有误的一项是()A.诗中“古人”“来者”指的是礼贤下士的贤明君主。
B.“念天地之悠悠”是以空间的广阔衬托孤寂之感。
C.诗人“独怆然而涕下”是因为时间的消逝,空间的寂寥。
D.“幽州台”即“蓟北楼”,是战国时燕昭王为招纳天下贤士所建,诗人因此有感而发。
人教版七年级语文下《谁是最可爱的人》同步练习(含答案)
人教版七年级语文下《谁是最可爱的人》同步练习(含答案)同步练1.下列词语中加粗字的注音没有错误的一项是()A.坚韧(rèn)淳朴(chūn)狭小(xiá)覆灭(fù)B.谦逊(xùn)豆浆(jiāng)豁亮(huò)犁耙(pá)C.聚歼(jiān)迸裂(pēng)摁倒(èn)掐住(qiā)D.溜达(liú)掰开(bāi)憋闷(biē)过瘾(yǐn)2.给下列加粗字注音或根据拼音写汉字。
奔(___)流坚rèn(___)chún(___)朴迸(___)裂军yú(___)里huò亮(___)犁耙(___)过瘾(___)3.找出并修改下列词语中的错别字。
红高梁_____自毫_____豆桨_____愤不顾身_____4.根据课文内容选词填空。
1)这场激战整整__________(延续持续)了8个小时。
最后,勇士们的子弹打光了。
___________(蜂拥涌)上来的敌人占领了山头,把他们压到山脚。
飞机掷下的汽油弹把他们的身上烧着了火。
这时候,勇士们是仍然不会后退的呀,他们把枪一__________(摔扔),向敌人__________(扑奔)去。
身上帽子上呼呼地冒着火苗,把敌人抱住,让身上的火,也把占领阵地的敌人烧死。
2)我就__________(推踹)开门,__________(扑闯)了进去。
呀!满屋子灰洞洞的烟,只能听见小孩儿哭,看不见人。
……先摸着一个大人,拉了拉没拉动;又向大人的身后摸,才摸着小孩儿的腿,我就一把__________(抓拽)着抱起来,跳出门去。
5.请写出下列句子所使用的表达方式。
1)他们是历史上、世界上第一流的战士,第一流的人!他们是世界上一切伟大人民的优秀之花!(____)2)他长着一副微黑透红的脸膛儿,高高的个儿,站在那儿,像秋天田野里一株红高粱那样淳朴可爱。
(____)3)还是在二次战役的时候,有一支志愿军的部队向敌后猛插,去切断军隅里敌人的逃路。
(新人教版)数学七年级下册同步练习试题及答案
人教版七下《
课前感悟
1.如果∠α=110°,那么∠α的补角等于__________________.
2.如图,直线EF与AB相交于G,与CD相交于H,
则∠AGH的对顶角是___________;∠AGF与_______是
对顶角.∠AGH与_______是邻补角,∠GHD的邻补角
是________.
埃拉托色尼是首先使用“地理学”名称的人,从此代替传统的“地方志”,写成了三卷专著.书中描述了地球的形状、大小和海陆分布.埃拉托色尼还用经纬网绘制地图,最早把物理学的原理与数学方法相结合,创立了数理地理学.
参考答案
1.70 2.∠FGB,∠HGB,∠AGF,∠HGB,∠CHB,∠EHB 3.C 4.C
C.有公共顶点的且相等的角D.一个角的两边分别是另一个角两边的反向延长线
10.如图,已知直线AB.CD相交于点O,OA平分∠EOC,∠EOC=70°,
则∠BOD的度数等于( ).
A.30°B.35°C.20°D.40°
11.如图,AB交CD于O,OE是顶点为O的一条射线,图中的对顶角和邻补角各有( ).
2000多年前,有人用简单的测量工具计算出地球的周长.这个人就是古希腊的埃拉托色尼(约公元前275—前194).
埃拉托色尼博学多才,他不仅通晓天文,而且熟知地理;又是诗人、历史学家、语言学家、哲学家,曾担任过亚历山大博物馆的馆长.
细心的埃拉托色尼发现:离亚历山大城约800公里的塞恩城(今埃及阿斯旺附近),夏日正午的阳光可以一直照到井底,因而这时候所有地面上的直立物都应该没有影子.但是,亚历山大城地面上的直立物却有一段很短的影子.他认为:直立物的影子是由亚历山大城的阳光与直立物形成的夹角所造成.从地球是圆球和阳光直线传播这两个前提出发,从假想的地心向塞恩城和亚历山大城引两条直线,其中的夹角应等于亚历山大城的阳光与直立物形成的夹角.按照相似三角形的比例关系,已知两地之间的距离,便能测出地球的圆周长.埃拉托色尼测出夹角约为7度,是地球圆周角(360度)的五十分之一,由此推算地球的周长大约为4万公里,这与实际地球周长(40076公里)相差无几.他还算出太阳与地球间距离为1.47亿公里,和实际距离1.49亿公里也惊人地相近.这充分反映了埃拉托色尼的学说和智慧.
七年级下册语文 15.驿路梨花 同步练习 (含答案解析)
七年级下册语文 15.驿路梨花同步练习一、单选题1.课文《驿路梨花》有一句表达全篇主旨的话,这句话是()A.山,好大的山啊!B.是雷锋同志教我们这样做的。
C.“驿路梨花处处开。
”D.她要用为人民服务的精神来帮助过路人。
【答案】C【知识点】理解文章中心思想【解析】【分析】课文以《驿路梨花》为标题,结尾又引用陆游“驿路梨花处处开”的诗句,是有着丰富而深刻的含义的,对突出文章的中心思想和结构完整有重大的作用。
从结构上说,题文相映,首尾呼应,使作品结构严谨,浑然一体。
从内容上说,诗句既承接和总结上文多处描绘梨花树林的美好景色,又以花喻人、寓人于花,即人像梨花一样的洁白美好。
所以“驿路梨花处处开”是全篇主旨。
故答案为:C.【点评】本题考查学生对文本主题的把握能力。
文章的主题往往是作者对人和事物的情感态度的折射,要有通篇考虑,从重点语段、语句入手分析作者的观点态度的能力。
2.下列加点字注音无误的一组是()A.迷茫.(máng)菌.子(jüèn)简陋.(lòu)悠闲.(xiān)B.延伸.(shēn)茂.密(mòu)花瓣.(bàn)陡.峭(dǒu)C.麂.子(jǐ)恍惚.(hū)撵.走(niǎn)驿.路(yì)D.喷.香(pèng)修葺.(róng)四溢.(yì)寨.子(zài)【答案】C【知识点】常用易错字字音【解析】【分析】A.有误,“菌子”应读作“jùn zi”,“悠闲”应读作“yōu xián”;B.有误,“茂密”应读作“mào mì”;C.正确;D.有误,“喷香”应读作“pèn xiāng”,“修葺”应读作“xiū qì”,“寨子”应读作“zhài zi”;故答案为:C.【点评】本题考查字音的辨析。
考题中所涉及到的词语大都来自教材中的课文。
人教版七年级下册英语同步练习册参考答案
Unit 3Section AI.1. south 2. Pandas 3. zoo 4. map 5. elephantII. 1-5 BAABBIII. 1. Why; very cute 2. does; like; Because; kind of interesting 3. animal; dogs; Why; friendly and smart 4. are; from; are from South AfricaIV. 1-5 DACBEV.1.Koalas 2. Giraffes 3. Lions 4. Dolphins 5. TigersCute Interesting Scary Friendly Quiet Beautiful Smart ExcitingSection BI. 1-5 ACABC 6-10 CACAAII. 1. sleep 2. quiet 3. lazy 4. to relax 5. scary III.1-4 BABA Ⅳ.1-5 CEADBV. 1. kind of 2. be quiet 3. other animals 4. play with her friends; eat grass 5. very shy 6. is from Australia; sleeps during the day; at night; gets up and eats leaves 7. sleeps; relaxes 20 hours every daySelf Check 1I. 1-5 AABCCII. 1. Do;eat 2. doesn’t do 3. Can you 4. Why like 5. Where are;from III. 1-5 ABCBASelf Check 2I. 1. leaves 2. friendly 3. beginning 4. animals 5. Chinese II. 1-5 CACAB 6-10 CCACB III. 1-5 FTTFFUnit 6Section AI. 1. snowy / snowing 2. playing 3. is 4. are running 5. cleanII.1-5 BBAACIII. 1-6 FBDEACIV. 1-5 FTFTTSection BI.1-5 BACCAII. A) 1. reporter 2. cooking 3. sleep 4. hot 5. doctorB) 6. windy 7. actor 8. are watching 9. playing 10. westIII. A) 1. not bad 2. studying inToronto 3. cold and snowing 4. pretty good 5. sunny and hotB) 6-10 FTFTFSelf Check 1I. 1-5 BACBCII. 1. What is the weather like now? 2. What are you doing at home? 3. That sounds like fun. 4. How is it going with your family? 5. She is calling to say happy birthday.III.1. How’s;weather 2. What’s the weather like 3. What is; wearing 4. What’s the weather like 5. What an interesting place 6. What bad 7. very snowySelf Check 2I. 1. How’s the weather; What’s the weather like; hot and wet2. How’s it going; Great3. Thank you for joining4. beautiful; sunny5. many people; on vacation6. Some; taking photos; others are lying7. Look at; group8. surprised9. a veryinteresting place 10. really very relaxed 11. It’s winter 12. hav ing a good time 13. drinking 14. when it’s rainingII. 1-5 CBABC 6-10 CAACB人教版七年级下册英语同步练习册参考答案(三) Unit 9Section AI. 1. were; was 2. meet; met 3. having 4. called; was; said 5. did; playedII. 1-5 CCBAAIII. 1. on Saturday morning 2. last weekend 3. do; homework 4.do some reading 5. beautiful beach 6. clean one’s room 7. the library 8. the movies 9. the pool 10. play tennis 11. play volleyball 12. play the guitar 13. study for 14. practice English 15. great; OK; wasn’t 16. did; do; stayed; studied for the math test; What about; visited 17. On Saturday eveningSection BI.A) 1. week 2. practise 3. spend 4. test 5. middleB) 6. cleaned 7. had 8. wanted 9. was 10. visitedII. 1-5 BAABCIII. 1. practise one’s guitar 2. stay at home 3. study for the test 4. in the afternoon 5. study geography 6. a little difficult 7.play sports 8. clean the room 9. go shopping 10. have a busy weekend/day 11. play chess 12. play computer games 13. play soccer with 14. visit friends 15. watch a movie 16. watch TV 17. read a book about history 18. For most kids 19. went shopping 20. had a busy weekendSelf Check 1st month 2. sad 3. go for a walk 4. play with 5. sit down 6. look for 7. watch; do 8. enjoys their weekendsII. 1. She was at school two hours ago.2. He wasn’t a great singer in 1999.3. He (often) went to the mountains with his friends last month.4. I wrote a letter to my brother yesterday evening.5. He had a glass of milk this morning.III. 1-5 BCACBSelf Check 2Ⅰ. 1. what about 2. to have 3. stayed at 4. talk show 5. How; spendⅡ. 1-5 CDAEBⅢ. 1-5 CBACB 6-10 CAABB。
七年级下册语文 20.外国诗二首 同步练习 (含答案解析)
七年级下册语文 20.外国诗二首同步练习一、单选题1.下列表述有误的一项是()A.《未选择的路》中,诗人抓住林中岔道这一具体形象,寄寓了如何选择人生道路的生活哲理。
B.《假如生活欺骗了你》既是诗人对心爱的孩子的叮咛和嘱托,同时也是勉励自己的座右铭。
C.“未选择的路”就是没有人选的路,也就是指一条并不存在的路。
D.《假如生活欺骗了你》通篇都是劝说口吻,蕴含着人生的哲理。
【答案】C【知识点】理解文章关键语句意思;作家作品【解析】【分析】A.正确;B.正确;C.《未选择的路》中,“我”选择了一条荒草萋萋、人迹更少的路,虽然一直怀恋着那条未选择的路,但绝不回头;D.正确。
故答案为:C.【点评】本题考查文学常识。
解答此类题目,需要我们在平时的学习中做好积累。
对于重点作家、重要文体必须熟记。
对作品中的重要内容应熟练掌握,针对作品中的人物、情节做出正确的评价。
2.依次填入下列各句横线处的词语,最恰当的....一项是()心儿永远(憧憬渴望向往)着未来;现在却常是忧郁。
而那过去了的,就会成为亲切的(留恋怀恋怀念)。
虽然在这条小路上,很少留下____(行人人们旅人)的足迹。
A.憧憬怀念旅人B.渴望留恋人们C.向往怀念行人D.向往怀恋旅人【答案】D【知识点】近义词【解析】【分析】(1)憧憬:对未来的美好期待与向往。
渴望:迫切地盼望,殷切地希望。
就像饥渴一样盼望得到。
向往:因热爱、羡慕某种事物或境界而希望得到或到达的意思。
比较三个词语的意思,″向往″比″憧憬″″渴望″的程度更深,是强烈要得到地意思,而″憧憬″和″渴望″都只是停留在期待和盼望的程度。
所以选″向往″贴切;(2)留恋:不忍舍弃或离开。
怀念:思念,关心;或对失去的不复返的时光、日子或者往事或人强烈的想念。
怀恋:在怀念的基础上加了情感。
一般怀恋的话,是指对恋人,亲人,朋友,或者关系很好的人。
原句有对过去的事情亲切的怀念,饱含情感,用″依恋″合适;(3)小路人迹罕至,也就不是人们常去的地方,也没有行人,只有那些旅行在途的人才会经过,所以选“旅人”恰当。
七年级数学下同步练习册答案人教版
七年级数学下同步练习册答案人教版七年级学生要仔细做人教版数学同步练习册的习题,出错要少,检查要多。
小编整理了关于人教版七年级数学下册同步练习册的答案,希望对大家有帮助!七年级数学下同步练习册答案人教版(一)平方根第2课时基础知识1、 2、 3、 4、B C B B5、47、±58、±11 13/8 ±13/10 -0.59、比较大小能力提升解得x=2 2x+5=2×2+5=9 所以2x+5的算数平方根为311、解:6.75÷1.2=5.625 5.625的算数平方根约等于2.37cm12、解:设宽是x(x>0),长为4x 则4x²=25解得x=2.5 所以4x=10七年级数学下同步练习册答案人教版(二)同位角、内错角、同旁内角基础知识1、B2、C3、∠1 ∠3 ∠2 ∠6 AB CD EF4、∠C 内错∠BAE5、AB 内错6、题目略(1)∠ADC ∠EBG ∠HEB ∠DCG(2)∠ADC ∠ABE ∠AEB ∠ACD能力提升7、题目略(1)AB CD BE(2)AD BC AB(3)AB CD BC(4)AB CD BE8、∠A和∠B ∠A和∠D ∠D和∠C ∠B和∠C 共4对9、题目略(1)∠DEA同位角是∠C,内错角是∠BDE,同旁内角是∠A、∠ADE(2)∠ADE同位角是∠B,内错角是∠CED,同旁内角是∠A、∠AED探索研究10、证明:∵∠2=∠4(互为对顶角)∴∠1=∠2∴∠1=∠4∵∠2+∠3=180° ∠1=∠2∴∠1+∠3=180°∴∠1和∠3互补七年级数学下同步练习册答案人教版(三)平行线的判定第2课时基础知识1、C2、C3、题目略(1)AB CD 同位角相等,两直线平行(2)∠C 内错角相等,两直线平行(3) ∠EFB 内错角相等,两直线平行4、108°5、同位角相等,两直线平行6、已知∠ABF ∠EFC 垂直的性质 AB 同位角相等,两直线平行已知 DC 内错角相等,两直线平行 AB CD 平行的传递性能力提升7、B 8、B9、平行已知∠CDB 垂直的性质同位角相等,两直线平行三角形内角和为180° 三角形内角和为180° ∠DCB 等量代换已知∠DCB 等量代换 DE BC 内错角相等,两直线平行10、证明:(1)∵CD是∠ACB的平分线(已知)∴∠ECD=∠BCD∵∠EDC=∠DCE=25°(已知)∴∠EDC=∠BCD=25°∴DE∥BC(内错角相等,两直线平行)(2)∵DE∥BC∴∠BDE+∠B=180° 即∠EBC+∠BDC+∠B=180°∵∠B=70° ∠EDC=25°∴∠BDC=180°-70°-25°=85°11、平行∵BD⊥BE∴∠DBE=90°∵∠1+∠2+∠DBE=180°∴∠1+∠2=90°∵∠1+∠C=90°∴∠2=∠C∴BE∥FC(同位角相等,两直线平行)探索研究12、证明:∵MN⊥AB EF⊥AB∴∠ANM=90° ∠EFB=90°∵∠ANM+∠MNF=180° ∠NFE+∠EFB=180°∴∠MNF=∠EFB=90°∴MN∥FE。
2022-2023学年全国初中七年级下政治人教版同步练习(含答案解析)055330
2022-2023学年全国初中七年级下政治人教版同步练习考试总分:99 分考试时间: 120 分钟学校:__________ 班级:__________ 姓名:__________ 考号:__________一、选择题(本题共计 20 小题,每题 3 分,共计60分)1. 为响应习近平总书记“坚决制止餐饮浪费行为,切实培养节约习惯”的号召,某校九年级学生提出了30多条如何在全社会营造“浪费可耻、节约为荣”氛围的建议,并将该建议送达政府相关部门,部分建议被采纳。
这些学生在积极参与()A.民主选举B.民主监督C.民主管理D.民主决策2. 女生日记:“自进入中学以来,我觉得自己变了,以前不愿意与男生交往,但现在总想和男生说话,爱和男生待在一起,和男生一起办事情特别愉快。
”该学生的这种心理活动是()A.心理不健康、道德品质不良的表现B.进入青春期学生的非正常心理活动C.进入青春期学生的正常心理活动D.青春期患有较严重心理疾病的表现3. 莎士比亚说:“青春时代是一个短暂的美梦,当你醒来时,这早已消失得无影无踪了。
”这句话给我们的启示是()A.青春的我们拥有无尽的遐想B.青春的力量在我们的身体里生发C.要规划青春路径,珍惜青春D.要勇于面对困难,做生活的强者4. “上帝在赐给我们青春的同时,也赐给我们青春痘。
”对这句话的最佳理解是()A.中学生每个人脸上都会长“青春痘“B.青春期是人生中的重要阶段,我们要把握青春期C.以修身为本,行走在“止于至善”的路上,在学习中成长,在成长中收获D.青春期既给我们带来成长的欢乐和美好,也带来一些莫名的烦恼和困惑5. 在不知不觉间,我们的身体经历着一系列微妙的变化。
而对青春期出现的生理变化,自己正确的做法是()A.科学认识,坦然接受B.以消极的心态去接纳C.以紧张的态度去对待D.想方设法加以掩盖6. 青春是什么?是一张张考卷,是突然出现在后门的班主任,是睡在上铺的兄弟,是那个蝉鸣夏日互道的一声再见……青春不在年华,而是心境执着追梦,永不低头,每一个在青春里拼尽全力的用心人。
七级英语下(人教版)同步练习册参考答案
七年级英语下(人教版)同步练习册参考答案Unit 1Section AI. 1. France 2. language; speaks 3. from 4. pal5. the United States6. countryⅡ. 1-5 CCBCAⅢ. 1. pen pal 2. come from/be from 3. in theUnited States 4. speak English 5. does; pen pal; comes fromAustralia; does; live; lives; language does; speak; speaks EnglishSection BI. 1. write 2. difficult 3. world 4. lives 5. thinksⅡ.1-5BABCCⅢ.1-5 BABCAIV. 1. her favorite subject 2. too difficult 3. write to 4. want a pen pal 5. my favorite sport 6. likes and dislikes 7. Does; have any brothers or sisters 8.Chinais a very interesting country 9. can speak English; a little French 10. going; with; playing sports 11. an action movie 12. tell me about yourselfV. 1. Five 2. Canada 3. Paris 4. the United States /America 5. ThreeSelf Check 1I. 1. What;want 2. Where;does;live;lives in 3. What, language;speak;speaks 4. My;favorite;subject 5. come;from 6. with;after;school 7. write;to;soonII. 1. doesn’t speak 2. It’s an 3. Where is 4. What language5. When isIII. 1-5 cadebIV. 1-5 BABCA 6-10 ACACBSelf Check 2I.1-5 CCBABII.1. What’s;favorite 2. on weekend 3. Does;speak 4. interestingplaces 5. I’m sureIII.1-5 BCAAB 6-10 ABCACUnit 2Section AI. 1. near here 2. on 3. across from 4. next to 5. in front of 6. between; and 7. behind the library 8. in the neighborhood 9. post office 10. pay phone 11. go straight 12. turn leftII. 1. between 2. post office 3. library 4. supermarket 5. acrossIII. 1-5 BCCBAIV. 1.There isn’t 2. Are;any 3. Where is 4.behind 5. near hereV. 1. there was no petrol left 2. a woman 3.West Street 4. walked5. the petrol station was closedSection BI. 1. take a walk through the park 2. a good place to have fun 3. an old hotel 4. a busy street 5. the way to my home 6. on your rightII. A) 1. dirty 2. behind 3. across 4. front 5. libraryB) 6. turning 7. beginning 8. yours 9. telling 10. funIII. 1-5 ACABAIV. 1-5EACDBV. 1-5TTTFFSelf Check 1I. 1-5 AAACCII. 1-5 BCCAB 6-10 CCABAIII. 1-5 FTFTFSelf Check 2I. 1. Excuse 2. Where 3. Sorry 4. ask 5. know 6. way 7. along/down 8. take 9. turning 10. see/findII. 1-5 BACCB 6-10 ACCBBIII.1. He’s from Canada.2. He’s looking for his parents.3. He’s going to the People’s Park.4. Jack is.5. He’s going there by taxi.Unit 3Section AI.1. south 2. Pandas 3. zoo 4. map 5. elephantII. 1-5 BAABBIII. 1. Why; very cute 2. does; like; Because; kind of interesting 3. animal; dogs; Why; friendly and smart 4. are; from; are from South Africa IV. 1-5 DACBEV.with people and money; give me their money 7. a white uniform; work in the day; at night 8. kind of dangerous;Thieves don’t like me 9. talking to people; ask them questions 10. work late; am very busy; go out to dinners II. A) 1-5 BEDACB) 6. money 7. dangerous 8. wear 9. nurse 10. sometimesIII. 1-5 CCBACIV.1. shop assistant 2. busy 3. doctor 4. taxi driver 5. policeman 6. Because it’s exciting. 7. reporter 8. nice 9. singer10. Because she likes singing.Section BI. 1. work hard 2. other young people 3. work for a magazine 4. school play 5. a busy job 6. a newspaper reporter 7. work; works in a hospital 8. as a waiter II.1-5 BCCABIII.1-5 CAEBDIV. 1-5 BABBCSelf Check 1I. 1. an international school for children of 5-12 2. to teach soccer;volleyball and tennis 3. a music teacher to teach guitar; piano,violin II. 1. Does;want 2. Where does 3. to him 4. does;do 5. What;beIII.1-5 CBADEIV. 1-5 BCCBASelf Check 2Ⅰ. 1-5 BCABA 6-10 BACACII. 1-5 ABBACIII.One possible version:Do you like English? Do you like to sing and dance? Do you like to work hard? Do you love children? Do you want to be an English teacher? If your answer is “Yes”;please call Mr Wang at 138********.Unit 5Section AI. 1. do homework 2. watch TV 3. eat have dinner 4. talk on the phone 5. go to the movies 6. write a letter 7. wait for 8. talk to/with9. read books 10. are; doing; watching 11. doing; is doing homework 12. doing; is reading 13. to go to the movies; Certainly; boring; When; Let’s go 14. waiting for 15. reading 16. talking to 17. talking about 18. goingII.1-5 CACBCIII. 1-5 DBAECSection BI. 1. thanks for 2. in the first photo 3. play basketball 4. at the swimming pool 5. in the last photo 6. be with 7. photo of my family 8. play soccer 9. Thanks for 10. some of my photos11. first; playing basketball 12. swimming 13. are eating dinner 14. last;with;doing homework;watching TV 15. swimming; I’m notII.1-5 BBACBIII.1-5 ACBABSelf Check 1I. 1-5 CCAACII. 1-5 CBCAA 6-10 CBBCAIII. 1. There are some students in the classroom.2. Two boys are cleaning the windows.3. Wang Fang and Han Mei are talking.4. Li Lei is reading a book.5. Jenny is drawing a picture.Self Check 2I. 1. —What are you doing?—I’m reading books.2. —Are they swimming?—No, they are playing basketball.3.We are eating/having dinner.4. —Is he watching TV?—No, he is doing (his) homework.5. —What are you doing?—We are playing football.6. I’m not sleeping. I’m watching TV.7. Do you want to go to the library with me?8. The TV show is very boring.9.When do you want to swim?10. Here is a photo of his family.II. 1-5 AABBC 6-10 ACCBAIII. 1-5 BACBAUnit 6Section AI. 1. snowy / snowing 2. playing 3. is 4. are running 5. cleanIII. 1-6 FBDEACIV. 1-5 FTFTTSection BI.1-5 BACCAII. A) 1. reporter 2. cooking 3. sleep 4. hot 5. doctorB) 6. windy 7. actor 8. are watching 9. playing 10. westIII. A) 1. not bad 2. studying inToronto 3. cold and snowing 4. pretty good 5. sunny and hotB) 6-10 FTFTFSelf Check 1I. 1-5 BACBCII. 1. What is the weather like now? 2. What are you doing at home? 3. That sounds like fun. 4. How is it going with your family? 5. She is calling to say happy birthday.III.1. How’s;weather 2. What’s the weather like 3. What is; wearing 4. What’s the weather like 5. What an interesting place 6. What bad 7. very snowySelf Check 2I. 1. How’s the weather; What’s the weather like; hot and wet 2. How’s it going; Great 3. Thank you for joining 4. beautiful; sunny 5. many people; on vacation 6. Some; taking photos; others are lying 7. Look at; group 8. surprised 9. a very interesting place 10. really very relaxed 11. It’s winter 12. having a good time 13. drinking 14. when it’s rainingII. 1-5 CBABC 6-10 CAACBUnit 7Section AI.1. curly 2. nothing 3. brown / blonde 4. pop 5. nobodyII. 1-5 BBACCIII. 1. look like 2. short hair 3. long hair 4. curly hair 5. straighthair 6. medium height 7. medium build 8. short straight hair 9. verypopular 10. a little bit quiet 11. does; look like; of medium build; has 12. know; don’t think I know 13. always wears 14. captain 15. popular 16.good-looking; a little bit quiet 17. to tell jokes 18. a little bit heavy 19. never stops talking 20. reading; playing chessSection BI. 1. build 2. captain 3. Remember 4. always 5. jokeII. 1-5 ACBAAIII. 1. a tall man with glasses 2. Some people; new looks 3. I don’t think he’s so great; does 4. go shopping; nobody knows me 5. tell jokes 6. love 7. long black hair 8. stop 9. like 10. pop singer 11. with glasses 12. a new lookSelf Check 1I.1. with a beard; curly hair 2. her new look 3. looks like 4. stops working 5. popular;ofII. 1. doesn’t do 2. Does; have 3. Who does; look 4. medium height 5. inIII. 1-5 BCBCA 6-10 BACBAIV. 1. round 2. light brown and short 3. thin 4. long curly 5. big blueSelf Check 2I. 1. know 2. look 3. medium 4. bit 5. curly 6. glasses 7. good-looking8. jokes 9. popular 10. rememberII. A) 1-5 CBCABB)1. Susan. 2. Because she has an important meeting. 3. William. 4. Tall. 5. Yes, she does.Unit 8Section AI. 1. large 2. drink 3. onions 4. seasons 5. dumplingsII. 1-5 AABCBIII. 1. some; a 2. some; a 3. an 4. some 5. an; someIV. 1. what kind of 2. beef and tomato noodles 3. a large bowl of noodles 4. What kind of; would; like 5. would he;like small/medium/largeV. 1. Can 2. help 3. some 4. noodles 5. do 6. have 7. do 8. have 9. large 10. medium 11. small 12. mediumSection BI. 1. tomatoes 2. to play 3. sunny 4. onion 5. eatingII. 1-5 CACCAIII. 1-5 CEBDASelf Check 1I. 1. orange juice 2. green tea 3. house; dumplings 4. and 5. or 6. some great specials 7. has; for 8. Come; eat 9. small; medium; or large 10. some soup II. 1-5 BACCASelf Check 2I.1. What kind of books 2. would like 3. large bowl 4. cups of5. for breakfastII. 1. help 2. noodles 3. kind 4. and 5. size 6. have7. medium 8. HereIII. 1-5 FFTFTUnit 9Section AI. 1. were; was 2. meet; met 3. having 4. called; was; said 5. did; playedII. 1-5 CCBAAIII. 1. on Saturday morning 2. last weekend 3. do; homework 4. do some reading 5. beautiful beach 6. clean one’s room 7. the library 8. the movies 9. the pool 10. play tennis 11. play volleyball 12. play the guitar 13. study for 14. practice English 15. great; OK; wasn’t 16. did; do; stayed; studied for the math test; What about; visited 17. On Saturday eveningSection BI.A) 1. week 2. practise 3. spend 4. test 5. middleB) 6. cleaned 7. had 8. wanted 9. was 10. visitedII. 1-5 BAABCIII. 1. practise one’s guitar 2. stay at home 3. study for the test 4. in the afternoon 5. study geography 6. a little difficult 7. play sports 8. clean the room 9. go shopping 10. have a busy weekend/day 11. play chess 12. play computer games 13. play soccer with 14. visit friends 15. watch amovie 16. watch TV 17. read a book about history 18. For most kids 19. went shopping 20. had a busy weekendSelf Check 1st month 2. sad 3. go for a walk 4. play with 5. sit down 6. look for 7. watch; do 8. enjoys their weekendsII. 1. She was at school two hours ago.2. He wasn’t a great singer in 1999.3. He (often)went to the mountains with his friends last month.4. I wrote a letter to my brother yesterday evening.5. He had a glass of milk this morning.III. 1-5 BCACBSelf Check 2Ⅰ. 1. what about 2. to have 3. stayed at 4. talk show 5. How;spendⅡ. 1-5 CDAEBⅢ. 1-5 CBACB 6-10 CAABBUnit 10Section AI. 1. summer 2. center 3. exam 4. expensive 5. decideII. 1-5 BCBABIII. 1. go to the mountains 2. stay at home 3. visit my uncle 4. go to summer camp 5. visit museums 6. go on vacation 7. study for exams 8. pretty good 9. did; go on vacation; went; was; was pretty good 10. were; were 11. was; was hot; rainy 12. How were; were unfriendlySection BI.A) 1. awful 2. walk 3. classmate 4. waterB) 5. cry 6. exams 7. rainy 8. wereII. 1-5 CBBBAIII. 1-5 CDEABSelf Check 1I.1. didn’t make 2. Did; go 3. What did; do 4. Where did; go 5. went shoppingII.1. did; go; summer camp 2. How; were; unfriendly 3. Did; No 4. makes me clean 5. had fun talkingIII. 1-5 ABCACSelf Check 2I. 1-5 CBABC 6-10 ABCBAII. One possible version:Sunday, April 9thThe weather was fine. All my classmates went to the park.We climbed the hills, boated on the lake, and flew kites all morning.At noon, we had a picnic near a big tree. In the afternoon, some girlssang and danced, some boys talked in English, and some studentsplayed games there. When we went home, it was late. I was tired, butI was really happy.Unit 11Section AI. 1. talk show 2. soap opera 3. sports show 4. sitcom(situation comedy) 5. think of; stand 6. Sports News 7. In fact 8. doesn’t like Healthy LivingII. 1. can’t stand 2. How about 3. think of 4. sports show 5. soap operaIII. 1-5 ACBCCIV. 1-5 BCBAASection BI.1. this week 2. some of the answers 3. likes and dislikes4. show5. going to the zoo6. would like; what she thinksII. 1. mind 2. nothing 3.fact 4. about 5.ideaIII.1-5 AACBCIV. 1-5 CEBADSelf Check 1I.1.doesn’t have any 2.Does;do 3.How;weather 4.How do you like 5.What wouldII.1. Alice likes shopping with her friends.2. He wants his wife to buy a cheap dress.3. Because she wants to find the same thing cheaper.4. Because there are too many people in shops.5. In the supermarket.Self Check 2I. 1-5 BACBA 6-10 AACBCII. 1-5 CABDEIII. 1-5 CACBBUnit 12Section AI. 1. uniform 2. eat 3. can’t 4. hallway 5. keep 6. quietII. 1-5 BACAAIII. 1. run in the hallway 2. be arrive late for school 3. eat in the classroom 4. listen to music 5. wear hats 6. has to; gym class 7. Do; wear school uniforms 8. What elseSection BI.1-5 BCBACII. School rules:1,2,6,7,11,14Library rules:9,12 ,15Traffic rules:4,10,13House rules:3,5,8Self Check 1I.1. can’t come 2. Don’t do 3. When do; have 4. Does; have to5. don’t likeII. A. (1, 2) B. (2, 3) C. (1, 2 ) D. (3) E. (3) F. (2)Self Check 2I. 1-5 BCCAA 6-10 CBBAAII. 1-5 TFTFTIII. One possible version:Dear David,I’d like to tell you the rules in our school. We have too many rules. We can’t run in the hallways. We can’t arrive late for class. We can’t listen to music in the classroom. And we have to wear our school uniforms. We have to clean our classroom and do homework every day. What do you think of our rules? Please write to me soon and tell me your school rules.Yours,Li Ping。
七年级下册数学同步练习册答案
七年级下册数学同步《新课程课堂同步练习册·数学(华东版七年级下册)》参考答案第6章一元一次方程§6.1 从实际问题到方程一、1.D 2. A 3. A二、1.x = - 6 2. 2x-15=25 3. x =3(12-x)三、1.解:设生产运营用水x亿立方米,则居民家庭用水(5.8-x)亿立方米,可列方程为:5.8-x=3x+0.62.解:设苹果买了x千克, 则可列方程为: 4x+3(5-x)=173.解:设原来课外数学小组的人数为x,则可列方程为:§6.2 解一元一次方程(一)一、1. D 2. C 3.A二、1.x=-3,x= 2.10 3. x=5三、1. x=7 2. x=4 3. x= 4. x= 5. x=3 6. y=§6.2 解一元一次方程(二)一、1. B 2. D 3. A二、1.x=-5,y=3 2. 3. -3三、1. (1)x= (2)x=-2 (3)x= (4) x=-4 (5)x = (6)x=-22. (1)设初一(2)班乒乓球小组共有x人, 得:9x-5=8x+2. 解得:x=7 (2)48人3. (1)x=-7 (2)x=-3§6.2 解一元一次方程(三)一、1. C 2. D 3. B 4. B二、1. 1 2. 3. 10三、1. (1) x=3 (2) x=7 (3)x=–1 (4)x= (5) x=4 (6) x=2. 3( x-2) -4(x- )=4 解得x=-33. 3元§6.2 解一元一次方程(四)一、1. B 2.B 3. D二、1. 5 2. , 3. 4. 15三、1. (1)y = (2)y =6 (3)(4)x=2. 由方程3(5x-6)=3-20x 解得x= ,把x= 代入方程a- x=2a+10x,得a =-8.∴当a=-8时,方程3(5x-6)=3-20x与方程a- x=2a+10x有相同的解.3. 解得:x=9§6.2 解一元一次方程(五)一、1.A 2. B 3. C二、1.2(x +8)=40 2. 4,6,8 3.2x+10=6x+5 4. 15 5. 160元三、1. 设调往甲处x人, 根据题意,得27+x=2[19+(20-x)]. 解得:x=172. 设该用户5月份用水量为x吨,依题意,得1.2×6+2(x-6)=1.4 x.解得x=8. 于是1.4x=11.2(元) .3. 设学生人数为x人时,两家旅行社的收费一样多. 根据题意,得240+120x=144(x+1),解得x=4.§6.3 实践与探索(一)一、1. B 2. B 3. A二、1. 36 2. 3. 42,270三、1. 设原来两位数的个位上的数字为x,根据题意,得10x+11-x=10(11-x)+x+63. 解得x=9. 则原来两位数是29.2.设儿童票售出x张,则成人票售出(700-x)张.依题意,得30x+50(700-x)=29000 . 解得:x=300, 则700-x=700-300=400人. 则儿童票售出300张,成人票售出400张.§6.3 实践与探索(二)一、1. A 2. C 3. C二、1. x+ x+1+1=x 2. 23.75% 3. 2045三、1. 设乙每小时加工x个零件,依题意得,5(x+2)+4(2x+2)=200解得x=14.则甲每小时加工16个零件,乙每小时加工14个零件.2. 设王老师需从住房公积金处贷款x元,依题意得,3.6%x+4.77%(250000-x)=10170. 解得x=150000.则王老师需从住房公积金处贷款150000元,普通住房贷款100000元.3. 设乙工程队再单独做此工程需x个月能完成,依题意,得解得x = 14. 小时第7章二元一次方程组§7.1 二元一次方程组和它的解一、1. C 2. C 3. B二、1. 2. 5 3.三、1. 设甲原来有x本书、乙原来有y本书,根据题意,得2. 设每大件装x罐,每小件装y罐,依题意,得.3. 设有x辆车,y个学生,依题意§7.2二元一次方程组的解法(一)一、1. D 2. B 3. B二、1. 2.略 3. 20三、1. 2. 3. 4.§7.2二元一次方程组的解法(二)一、1. D 2. C 3. A二、1. , 2. 18,12 3.三、1. 2. 3. 4.四、设甲、乙两种蔬菜的种植面积分别为x、y亩,依题意可得:解这个方程组得§7.2二元一次方程组的解法(三)一、1. B 2.A3.B 4. C二、1. 2. 9 3. 180,20三、1. 2. 3.四、设金、银牌分别为x枚、y枚,则铜牌为(y+7)枚,依题意,得解这个方程组,, 所以y+7=21+7=28.§7.2二元一次方程组的解法(四)一、1. D 2. C 3. B二、1. 2. 3, 3. -13三、1. 1. 2. 3. 4. 5. 6.四、设小明预订了B等级、C等级门票分别为x张和y张. 依题意,得解这个方程组得§7.2二元一次方程组的解法(五)一、1. D 2. D 3. A二、1. 24 2. 6 3. 28元,20元三、1. (1)加工类型项目精加工粗加工加工的天数(天)获得的利润(元)6000x8000y(2)由(1)得:解得∴答:这批蔬菜共有70吨.2.设A种篮球每个元,B种篮球每个元,依题意,得解得3.设不打折前购买1件A商品和1件B商品需分别用x元,y元,依题意,得解这个方程组,得因此50×16+50×4-960=40(元).§7.3实践与探索(一)一、1. C 2. D3.A二、1. 72 2. 3. 14万,28万三、1.设甲、乙两种商品的原销售价分别为x元,y元,依题意,得解得2. 设沙包落在A区域得分,落在B区域得分,根据题意,得解得∴答:小敏的四次总分为30分.3.(1)设A型洗衣机的售价为x元,B型洗衣机的售价为y元,则据题意,可列方程组解得(2)小李实际付款:(元);小王实际付款:(元).§7.3实践与探索(二)一、1. A 2. A3.D二、1. 55米/分, 45米/分 2. 20,183.2,1三、1. 设这个种植场今年“妃子笑”荔枝收获x千克,“无核Ⅰ号”荔枝收获y千克.根据题意得解这个方程组得2.设一枚壹元硬币克,一枚伍角硬币克,依题意得:解得:3.设原计划生产小麦x吨,生产玉米y吨,根据题意,得解得10×(1+12%)=11.2(吨),8×(1+10%)=8.8(吨).4. 略5. 40吨第8章一元一次不等式§8.1 认识不等式一、1.B 2.B 3.A二、1. <;>;>; > 2. 2x+3<5 3. 4. ω≤50三、1.(1)2 -1>3;(2)a+7<0;(3)2+ 2≥0;(4)≤-2;(5)∣ -4∣≥ ;(6)-2<2 +3<4. 2.80+20n>100+16n; n=6,7,8,…§8.2 解一元一次不等式(一)一、1.C 2.A 3.C二、1.3,0,1,,- ;,,0,1 2. x≥-1 3. -2<x<2 4. x<三、1.不能,因为x<0不是不等式3-x>0的所有解的集合,例如x=1也是不等式3-x>0的一个解. 2.略§8.2 解一元一次不等式(二)一、1. B 2. C 3.A二、1.>;<;≤ 2. x≥-3 3. >三、1. x>3; 2. x≥-2 3.x< 4. x>5四、x≥-1 图略五、(1) (2) (3)§8.2 解一元一次不等式(三)一、1. C 2.A二、1. x≤-3 2. x≤- 3. k>2三、1. (1)x>-2 (2)x≤-3 (3)x≥-1 (4)x<-2 (5)x≤5 (6) x≤-1 (图略)2. x≥3.八个月§8.2 解一元一次不等式(四)一、1. B 2. B 3.A二、1. -3,-2,-1 2. 5 3. x≤1 4. 24三、1. 解不等式6(x-1)≤2(4x+3)得x≥-6,所以,能使6(x-1)的值不大于2(4x+3)的值的所有负整数x的值为-6,-5,-4,-3,-2,-1.2. 设该公司最多可印制x张广告单,依题意得80+0.3x≤1200,解得x≤3733.答:该公司最多可印制3733张广告单.3. 设购买x把餐椅时到甲商场更优惠,当x>12时,得200×12+50(x-12)<0.85(200×12+50x),解得x<32 所以12<x<32; 当0<x≤12时,得200×12<0.85(200×12+50x)解得x>,所以<x ≤12 其整数解为9,10,11,12.所以购买大于或等于9张且小于32张餐椅时到甲商场更优惠.§8.3 一元一次不等式组(一)一、1. A 2. B二、1. x>-1 2. -1<x≤2 3. x≤-1三、1. (1) x≥6 (2) 1<x<3 (3)4≤x<10 (4) x>2 (图略)2. 设幼儿园有x位小朋友,则这批玩具共有3x+59件,依题意得1≤3x+59-5(x-1)≤3,解得30.5≤x≤31.5,因x为整数,所以x=31,3x+59=3×31+59=152(件)§8.3 一元一次不等式组(二)一、1. C 2. B. 3.A二、1. m≥2 2. <x<三、1. (1)3<x<5 (2)-2≤x<3 (3)-2≤x<5 (4) x≥13(图略)2×3+2.5x<204×3+2x>202. 设苹果的单价为x元,依题意得解得4<x<5,因x恰为整数,所以x=5(元)(答略)3. -2<x≤3 正整数解是1,2,34. 设剩余经费还能为x名山区小学的学生每人购买一个书包和一件文化衫,依题意得350≤1800-(18+30)x≤400,解得29≤x≤30,因人数应为整数,所以x=30.5.(1)这批货物有66吨(2)用2辆载重为5吨的车,7辆载重为8吨的车.第九章多边形§9.1三角形(一)一、1. C 2. C二、1. 3,1,1;2. 直角内 3. 12三、1. 8个;△ABC、△FDC、△ADC是锐角三角形;△ABD、△AFC是钝角三角形;△AEF、△AEC、△BEC是直角三角形.2.(1)略(2)三条中线交于一点,交点把每条中线分成的两条线段的比均为1:2.3.不符合,因为三角形内角和应等于180°.4.∠A=95°∠B=52.5°∠C=32.5°§9.1三角形(二)一、 1.C 2.B _______________________________________________________________________________ ________________________________________3. A.二、1.(1)45°;(2)20°,40°(3)25°,35° 2. 165° 3. 20°4. 20°5.3:2:1三、1. ∠BDC应为21°+ 32°+ 90°=143°(提示:作射线AD)2. 70°3. 20°§9.1三角形(三)一、1.D 2.A二、1.12cm 2. 3个 3. 5<c<9,7三、1.其他两边长都为8cm 2. 略.§9.2多边形的内角和与外角和一、1.C 2. C. 3.C 4.C二、1.八,1080° 2. 10,1800° 3. 125° 4. 120米.三、1.15 2.十二边形 3.九边形,少加的那个内角的度数为135°.4.11§9.3用多种正多边形拼地板(一)一、1. B 2. C.二、1. 6 2. 正六边形 3. 11,(3n+2).三、1.(1)因为围绕一点拼在一起的正多边形的内角的和为360°.(2)不能,因为正八边形的每个内角都为135°,不能整除360°.(3)略.2.应选“80×80cm2”这种规格的瓷砖,因为长方形客厅的长和宽都是80cm的整数倍,需要这种瓷砖32块。
七下数学同步练习答案必备
七下数学同步练习答案必备求学的三个条件是:多观察、多吃苦、多研究。
每一门科目都有自己的学习方法,但其实都是万变不离其中的,也是要记、要背、要讲练的。
下面是小编给大家整理的一些七下数学同步练习的答案,希望对大家有所帮助。
七年级下册数学同步练习册参考答案一元一次方程§6.1 从实际问题到方程一、1.D 2. A 3. A二、1. x = - 6 2. 2x-15=25 3. x =3(12-x)三、1.解:设生产运营用水x亿立方米,则居民家庭用水(5.8-x)亿立方米,可列方程为:5.8-x=3x+0.62.解:设苹果买了x千克, 则可列方程为: 4x+3(5-x)=173.解:设原来课外数学小组的人数为x,则可列方程为:§6.2 解一元一次方程(一)一、1. D 2. C 3.A二、1.x=-3,x= 2.10 3. x=5三、1. x=7 2. x=4 3. x= 4. x= 5. x=3 6. y=§6.2 解一元一次方程(二)一、1. B 2. D 3. A二、1.x=-5,y=3 2. 3. -3三、1. (1)x= (2)x=-2 (3)x= (4) x=-4 (5)x = (6)x=-22. (1)设初一(2)班乒乓球小组共有x人, 得:9x-5=8x+2. 解得:x=7(2)48人3. (1)x=-7 (2)x=-3§6.2 解一元一次方程(三)一、1. C 2. D 3. B 4. B二、1. 1 2. 3. 10三、1. (1) x=3 (2) x=7 (3)x=–1 (4)x= (5) x=4 (6) x=2. 3( x-2) -4(x- )=4 解得 x=-33. 3元浙教版七下数学同步练习答案基础训练一、填空题1.如果+5ºC表示比零度高+5ºC,那么比零度低7ºC记作_______ºC.2.如果-60元表示支出60元,那么+100元表示______________.3.下列各数-0.05 - +120-4.10 -8正数有__________________;负数有_____________;整数有_________________分数有__________________.4. 的相反数是______;________.和0.5互为相反数;_________的相反数是它本身.5.-(+6)是_______的相反数,-(-7)是_______的相反数.[6.按规律填数1,-2,3,-4,5,____,_____,...二、选择题7.把向东记作“-”,向西记作“+”,下列说法正确的是().A.-10米表示向西10米B.+10米表示向东10米C.向西行10米表示向东行-10米D.向东行10米也可以记作+10米8.温度上升6ºC,再上升-3ºC的意义是().A.温度先上升6ºC,再上升3ºCB.温度先上升-6ºC,再上升-3ºCC.温度先上升6ºC,再下降3ºCD.无法确定9.不具有相反意义的量是( ).A. 妈妈的月工资收入是1000元,每月生活所用500元B. 5000个产品中有20个不合格产品C. x疆白天气温零上25ºC,晚上的气温零下2ºCD. 商场运进雪碧100箱,卖出80箱10.下列说法正确的是( ).A.任何数的相反数都是负数B.一对互为相反数的两个数的和等于其中一个数的两倍C.符号不同的两个数都是互为相反数D.任何数都有相反数11.下面两个数互为相反数的是( ).A. 和0.2B. 和-0.333C.-2.75和D.9和-(-9)12.- 不是负数,那么( ).A. 是正数B. 不是负数C. 是负数D. 不是正数综合训练三、解答题13.下列是非典时期10个同学的体温测量结果,以36.9为标准体温,请用正负数的形式表示这些同学的体温与标准体温之间的关系。
人教版七年级下册语文《谁是最可爱的人》同步练习(含答案)
人教版七年级下册语文《谁是最可爱的人》同步练习(含答案)一、积累与运用1.下列词语中加点字的注音没有错误的一项是()A.坚韧.(rèn)淳.朴(chūn)覆.灭(fù)B..谦逊.(xùn)豁.亮(huò)犁耙.(pá)C.聚歼.(jiān)迸.裂(pēng)摁.倒(èn)D.掰开(bāi)憋.闷(biē)过瘾.(yǐn)2.下列句子没有语病的一项是()A.学好语文是学好其他学科的基础。
B.鲁迅先生的一生,写了不少讽刺揭露反动派罪恶的杂文。
C.在他不断的启发教育下,终于使我认识了错误。
D.还没吃晚饭,我已经做完了作业,只剩下外语作业还没动手。
3.下列句子的修辞手法和作用分析不当的一项是()A.你不觉得我们的战士是可爱的吗?(反问,表明对志愿军战士是否可爱有疑问。
)B.谁是我们最可爱的人呢?我们的战士,我感到他们是最可爱的人。
(设问,明确提出“我们的战士”是最可爱的人,呼应文题。
)C.我说“朝鲜半边红,半边黑”,这算什么话昵?(借代,表现了志愿军战士崇高的国际主义精神。
)D.他长着一副微黑透红的脸膛,高高的个儿,站在那儿,像秋天田野里一株红高梁那样淳朴可爱。
(比喻,突出了马玉祥“淳朴”气质。
)4.指出下列句子所使用的表达方式。
(1)还是在二次战役的时候,有一支志愿军的部队向敌后猛插,去切断军隅里敌人的逃路。
(2)他长着一副微黑透红的脸膛,高高的个儿,站在那儿,像秋天田野里一株红高粱那样淳朴可爱。
(3)他们是历史上、世界上第一流的战士,第一流的人!他们是世界上一切伟大人民的优秀之花!(4)我们的战士,对敌人这样狠,而对朝鲜人民却是那样的爱,充满国际主义的深厚热情。
5.2020年是中国人民志愿军抗美援朝出国作战70周年。
全国各地广泛开展了各类纪念活动,请你参加以“战争与和平”为主题的综合性学习活动,完成以下任务。
(1)【英雄赞歌】请你根据下面的材料,为战斗英雄黄继光写几句赞语。
人教版七年级下册英语同步练习册答案参考
⼈教版七年级下册英语同步练习册答案参考 为明天做准备的最好⽅法就是集中你所有智慧,所有的热忱,把今天的七年级英语同步练习册做得尽善尽美,这就是你能应付未来的唯⼀⽅法。
下⾯是⼩编为⼤家精⼼整理的⼈教版七年级下册英语同步练习册答案参考,仅供参考。
⼈教版七年级下册英语同步练习册答案参考(⼀) Unit 5 Section A I. 1. do homework 2. watch TV 3. eat have dinner 4. talk on the phone 5. go to the movies 6. write a letter 7. wait for 8. talk to/with 9. read books 10. are; doing; watching 11. doing; is doing homework 12. doing; is reading 13. to go to the movies; Certainly; boring; When; Let’s go 14. waiting for 15. reading 16. talking to 17. talking about 18. going II.1-5 CACBC III. 1-5 DBAEC Section B I. 1. thanks for 2. in the first photo 3. play basketball 4. at the swimming pool 5. in the last photo 6. be with 7. photo of my family 8. play soccer 9. Thanks for 10. some of my photos 11. first; playing basketball 12. swimming 13. are eating dinner 14. last; with;doing homework;watching TV 15. swimming; I’m not II.1-5 BBACB III.1-5 ACBAB Self Check 1 I. 1-5 CCAAC II. 1-5 CBCAA 6-10 CBBCA III. 1. There are some students in the classroom. 2. Two boys are cleaning the windows. 3. Wang Fang and Han Mei are talking. 4. Li Lei is reading a book. 5. Jenny is drawing a picture. Self Check 2 I. 1. —What are you doing? —I’m reading books. 2. —Are they swimming? —No, they are playing basketball. 3.We are eating/having dinner. 4. —Is he watching TV? —No, he is doing (his) homework. 5. —What are you doing? —We are playing football. 6. I’m not sleeping. I’m watching TV. 7. Do you want to go to the library with me? 8. The TV show is very boring. 9.When do you want to swim? 10. Here is a photo of his family. II. 1-5 AABBC 6-10 ACCBA III. 1-5 BACBA ⼈教版七年级下册英语同步练习册答案参考(⼆) Unit 7 Section A I.1. curly 2. nothing 3. brown / blonde 4. pop 5. nobody II. 1-5 BBACC III. 1. look like 2. short hair 3. long hair 4. curly hair 5. straight hair 6. medium height 7. medium build 8. short straight hair 9. very popular 10. a little bit quiet 11. does; look like; of medium build; has 12. know; don’t think I know 13. always wears 14. captain 15. popular 16. good-looking; a little bit quiet 17. to tell jokes 18. a little bit heavy 19. never stops talking 20. reading; playing chess IV. 1-5 BEDCA Section B I. 1. build 2. captain 3. Remember 4. always 5. joke II. 1-5 ACBAA III. 1. a tall man with glasses 2. Some people; new looks 3. I don’t think he’s so great; does 4. go shopping; nobody knows me 5. tell jokes 6. love 7. long black hair 8. stop 9. like 10. pop singer 11. with glasses 12. a new look Self Check 1 I.1. with a beard; curly hair 2. her new look 3. looks like 4. stops working 5. popular;of II. 1. doesn’t do 2. Does; have 3. Who does; look 4. medium height 5. in III. 1-5 BCBCA 6-10 BACBA IV. 1. round 2. light brown and short 3. thin 4. long curly 5. big blue Self Check 2 I. 1. know 2. look 3. medium 4. bit 5. curly 6. glasses 7. good-looking 8. jokes 9. popular 10. remember II. A) 1-5 CBCAB B)1. Susan. 2. Because she has an important meeting. 3. William. 4. Tall. 5. Yes, she does. ⼈教版七年级下册英语同步练习册答案参考(三) Unit 9 Section A I. 1. were; was 2. meet; met 3. having 4. called; was; said 5. did; played II. 1-5 CCBAA III. 1. on Saturday morning 2. last weekend 3. do; homework 4. do some reading 5. beautiful beach 6. clean one’s room 7. the library 8. the movies 9. the pool 10. play tennis 11. play volleyball 12. play the guitar 13. study for 14. practice English 15. great; OK; wasn’t 16. did; do; stayed; studied for the math test; What about; visited 17. On Saturday evening Section B I.A) 1. week 2. practise 3. spend 4. test 5. middle B) 6. cleaned 7. had 8. wanted 9. was 10. visited II. 1-5 BAABC III. 1. practise one’s guitar 2. stay at home 3. study for the test 4. in the afternoon 5. study geography 6. a little difficult 7. play sports 8. clean the room 9. go shopping 10. have a busy weekend/day 11. play chess 12. play computer games 13. play soccer with 14. visit friends 15. watch a movie 16. watch TV 17. read a book about history 18. For most kids 19. went shopping 20. had a busy weekend Self Check 1 st month 2. sad 3. go for a walk 4. play with 5. sit down 6. look for 7. watch; do 8. enjoys their weekends II. 1. She was at school two hours ago. 2. He wasn’t a great singer in 1999. 3. He (often) went to the mountains with his friends last month. 4. I wrote a letter to my brother yesterday evening. 5. He had a glass of milk this morning. III. 1-5 BCACB Self Check 2 Ⅰ. 1. what about 2. to have 3. stayed at 4. talk show 5. How; spend Ⅱ. 1-5 CDAEB Ⅲ. 1-5 CBACB 6-10 CAABB。
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Unit 1 Where’s your pen pal from?Section AI. 1.country 2. Canada 3. Japan 4. Australia 5. French6. language7.pal8. live9. United 10. SingaporeII.1-5: ABDBB 6-10 CAACDIII. 1. is, from 2. Where’s, from 3. What language4. Where does5. Does, speakIV. 1. Where is, from is from 2. does, live, lives 3. language, speak, speaks 4. Chinese, speaks Japanese 5. Are, from , they areV.1-5 EFBDASection BI. 1. write 2. favorite 3. difficult 4. world 5. wants 6. for 7.in 8. to 9.from, in 10.in 11. with 12.in/at 13.from, in 14. in15.to, onII.1-5 CCAAC 6-10 BCABC 11-15 CBBDBIII. 1.speak, speaks French 2. think, interesting 3. a little 4. writes to his parents, about 5.doing sports onIV. 2. Nov. 25 3.I’m 4. Chinese 5. football6.history7.English8. too9. Jackie Chan 10. yourselfUnit 2 Where’s the post office?Section AI. 1.library 2. restaurant 3. supermarket 4. bridge 5. post office6.Avenue7.neighborhood8.between9.on the left 10.acrossfrom 11. in front of 12.on 13.behind 14. next to 15.in II.1-5 CBCBC 6-10 CDCCCIII. 1. where are 2. is a, bridge 3. Yes, there is 4. Are there any5. There are two small restaurants in the neighborhood.IV. 1. Excuse 2. on 3. next 4. near 5. isn’t 6. neighborhood7. turn 8. on 9. across 10.welcomeSection BI. 1. small 2. quiet 3. beginning 4. through 5. dirty6. hungry7. way8. garden9. visit 10. trip11. market 12. airport 13. District 14. place 15. tourII.1-5 BABBD 6-10 BCBACIII. 1.Go down, turn left 2. have a good trip 3. know, arriving4. with, next to5. tell, the wayIV. 1. is 2. post office 3. between 4. across from 5. down6. on7. schoolV.1-5 CBACD 6-10 ACABCVI.略Unit 3 Why do you like koalas?Section AI. 1.giraffes 2. cute/clever 3. tigers 4. kind 5. Lions 6.elephant 7.Dolphins 8. Pandas 9. animals 10. mapII.1-5 CBACA 6-10 CDABDIII. 1. Why do 2. Why does, like 3. Where are, from 4. kind of5. Does, like1.see, first2. to visit3. kind of interesting4. very smart/clever5. are /come from South AfricaIV.1-5 DFABESection BI. 1.animals 2. leaves 3. other 4. quiet 5. lazy 6.years 7.play 8.relaxes 9. grass 10. AfricaII.1-5 CDABA 6-10 CABDCIII. 1. watches TV, at night 2. other animals 3. are, lazy 4 plays with, during/in 5. eats leavesIV. 1. What do, to see 2. Does, sleep 3. Why do you 4. doesn’t, relax 5. don’t beV.animals koala giraffe cute/clever panda kind elephant very dolphins friendlyVI.1-5 BCDAB 6-10 ABCDBVII.略Unit 4 I want to be an actor.Section AI. 1.doctor 2.hospital 3.waiter 4.policewoman 5.uniforms6.money7.Thieves8. dangerous9. reporter 10.policewomenII.1-6 BCAABBIII. 1.What do, do 2. What does, do 3. Where does 4. What do5. What doesIV. 1. What 2. do 3. Where 4. station 5. like te 7. to8.beV.four, policeman, station, dangerous, clerk, money, be, hospital, wears, doctors, night, restaurant, busy, late, toSection BI. 1. Summer 2. as 3. magazines 4. young 5. teach 6. news7. stories 8. children 9. international 10. exciting 11. with,to, from 12.in/during, at 13. to/with, about 14.to 15. in, as, at16. for, as 17. for, ofII.1-6 CBCCDDIII. 1. writing stories 2. to work late 3. kind of 4. police station5.newspapers, magazines6. work for, as7. an international,children of 8. to teachIV.1-5 BDDAC 6. two, music 7.No, can’t 8. shop 9. eight10. No, can’tV.略Unit 5 I’m watching TV.Section AI. 1. cleaning 2. show 3. apartment 4.Sure 5. on 6. reading abook 7. writing a letter 8. doing his homework 9. waiting for10. talking on the phoneII.1-5 DABACIII. 1. What, doing 2. What is, doing 3. What is, for 4. Where are5.Are, eating, No, aren’tIV. 1. They are talking about the thief. 2. When do you want to go? 3.Let’s go at six o’clock. 4. He is reading a newspaper at the bus station. 5. Thy boy isn’t playing with a bird.V. 1. are playing 2. are having 3. isn’t reading 4. is, doing, is watching 5. waitingVI.1-5 BECDASection BI. 1. toys 2. camera 3. birds 4 west 5. actvities 6.for 7.of8.In, at 9.In, with,at 10. at,atII.1-6 BDDCCBIII. 1. Are, eating 2. Where is 3. Who, talking to 4. is working5.is watching, nowIV. 1. are swimming 2. are singing 3. are having 4.Are, writing5.is shopping6.does, is doing7. to go, meetV. 1.Sunday 2.In the park 3.Yes, they are. 4.They are dancingand singsing. 5.She is playing games. 6.shop assistant7.reading newspapers 8.teacher 9.watering the flowers 10. inthe garden 11. playing with her new toy car 12. in her room13. student 14.in the yardVI.略Unit 6 It’s raining!Scetion AI. 1.weather 2. cloudy 3. windy 4.Terrible 5.sunny6.cooking7.going8.raining9.is studying 10.playing, arewatchingII.1-5 BCDBDIII. 1.How’s, weather 2.What, doing 3. Is, cooking, Yes, is 4.How’s 5. Are, studying, No, aren’tIV. 1. are, doing, watching 2. is, doing his homework 3. How’s, weather, is snowing 4. How’s, going, Pretty good 5. is raining6. What, doing, are studying7. Is, playing, is cooking8. are,listening toV. 1. Who’s 2. This 3. is 4. going 5. in 6. snowing 7. with8. weather 9. watching 10. isSection BI. 1. scarfs /scarves 2. vacation 3. surprised 4. relaxed 5. men6. group7. hot, cold8. cool9.having a good time 10. humidII.1-5 DADBCIII. 1. do, when, rains 2. weather, are wearing scarfs/scarves 3. look at, playing beach volleyball 4. are lying 5. am surprised, in this heatIV. 1. joining 2. are lying 3. surprised 4. dancing 5. takingV. 1.like 2. warm 3. looks 4. right 5. not 6. or 7.in 8. visit9. about 10. BecauseVI.1-5 BCDCB 6-10 DCABAVII.1-5 DBCADVIII.略Unit 8 I’d like some noodles.Section AI. 1. would 2. beef 3. size 4.Potato rge 6.tomato7.potatoes 8. specials 9.beef 10.noodlesII.1-5 AACCBIII. 1. What can, do for 2. What kind of, would, like 3. Wha size, would 4. Would you like some 5.How muchIV. 1. help 2. like 3. of 4. do 5. Sure 6. sizes 7. small 8. is Section BI.juice 2. porridge 3. Dumplings 4. specials 5. Friday 6.onions 7.strawberries 8. Cinese 9. waiter 10. dessertII. 1. of 2. for 3. for, for 4. in 5. at/inIII.1-5 BBCBA 6-10 DBBDAIV. 1. would like 2.doesn’t like, or 3. How much 4. What kind of, would 5. We also have green tea and orange juice/ orange juice and green tea.V.1-5 FBGADVI.1-5 BCCCA 6-10 BACBAVII. 1.eight / 8 2. medium 3. Monday 4. three / 3 5. Orange juice VIII.略Unit 9 How was your weekend?Section AI. 1. was 2. last 3. test 4. practices 5. didII. 1. On 2. for 3. with 4. at 5. about 6. inIII. 1. did her homework 2. went to the movies / a movie 3. went to the mountains 4. stayed at home, studied for the Chinese text 5.had a partyIV. 1. What did, do 2. How was 3. cleaned, last weekend 4. What did, do 5. Did, goV.1-5 CABCAVI.1-5 DFBEASection BI. 1. spend 2. Geography 3. middle 4. anygthing 5. song 6.enjoysII. 1.studies 2. gets 3.does 4. has 5.goes 6.get 7. had 8.went 9.was 10.saidIII.busy cleaned my difficult visited for read played / practiced watched sawIV. 1. wrote a new song 2. went for a walk 3. to go to school 4.looked for his dog, wasn’t 5. saw an interesting, read a book about history 6. went shoppingV.1-5 BCBCDVI.1-5 CADEBVII.1-5 BCAAD 6-10 BAABCVIII.1-5 FFTTTIX.略Unit 10 Where did you go on vacation?Section AI. 1. rainy 2. exams 3. really 4. Were 5. MuseumII.1-5 BDCABIII. 1. Where did, go 2. didn’t visit 3. What was, like 4. What did, do 5. Did, doIV. 1. stayed at home 2. summer camp 3. Where did, have (eat) 4.food, awful 5. was pretty relaxingV.1-5 ECAGDSection BI. 1.delicious 2. walks 3.crying 4.classmates 5. back 6.corner 7. wall 8.palace 9.decide 10. SquareII.1-5 CABDD 6-10 AADCAIII.1-5 EDCBAIV. 1. the Great Wall 2. made, happy 3. decide to buy 4. all day5. saw, cryingV.1-5 ADBCA 6-10 DBCDAVI.1-5 ADBCBVII.略Unit 11 What do you think of game shows?Section AI. 1. nothing 2. situation 3. king 4. stand 5. cultureII.1-5 BADCB 6-10 DABACIII. 1. What, think of 2. What, does 3. you, helping 4. Me, too IV. 1. In fact 2. Healthy Living 3. agree with 4. How/ What about5. Animal WorldV.1-5 ECDABSection BI. 1. with 2. by 3. about 4. of 5.in 6. glasses 7. coolest 8.colorful 9. reading 10. saidII.1-5 CADBC 6-10 ADADBIII. 1. What does your mother think of the scarf? 2. Do you enjoy nice words about your look? 3.My friend Dale doesn’t mind the key ring. 4. Can you please come to my home for dinner? 5.Many of the questions are interesting.IV. 1. Tell it like it is 2. show us 3. wants to be 4. put on 5.good ideaV.1-5 BCDBA 6-10 DABCAVI. 1. She likes going shopping. 2. Mr Brown 3. No, he didn’t. 4.He gave the money and carried what his wife bought. 5. He felt very tired.VIII.略Unit 12 Don’t eat in class.Section AI. 1. has 2. are watchineg 3. playing 4. did 5. to buy 6.fight7. outside 8. classroom 9. else 10. hallII.1-5 DBACDIII. 1. Can, eat 2. Come to 3. No, don’t 4. Don’t listen 5. other thingsIV. 1. those rules 2. sports shoes 3. arrive /be late for 4. in thedining hall 5. outside the classroomV.1-5 CAFDBSection BI. 1. on 2. after 3. from, to 4. at, on 5. in, by, at 6. children7. Talking 8. fun 9. her 10. speakingII.1-5 DCABD 6-10 CBADCIII. 1. Do, have to 2. Don’t run 3. Can, play 4. enjoy yourself 5.don’t have toIV. 1. Do you often help your mom make dinner at home? 2. Don’t talk loudly in the classroom! 3. I have to go to bed by 10 o’clock.4. Do you have to go to the Children’s Palace to learn the piano?5. Can you meet friends on school nights?V.1-5 CABDA 6-10 CBDCAVI. 1. Welcome to the school library. 2. Don’t take your food into the library or eat it here, please. 3.他们会使书籍变得潮湿。