《最新苏教版七年级下册数学课时作业本答案.doc优秀名师资料.doc》由会员分享，可在线阅读，更多相关《最新苏教版七年级下册数学课时作业本答案.doc优秀名师资料.doc（11页珍藏版）》请在三一文库上搜索。
1、苏教版七年级下册数学课时作业本答案.doc苏教版七年级下册数学课时作业本答案 数学(mathematics或maths)，是研究数量、结构、变化、空间以及信息等概念的一门学科，从某种角度看属于形式科学的一种。下面是在线.小编整理的苏教版七年级下册数学课时作业本答案，供大家参考! 苏教版七年级下册数学课时作业本答案 1.用一张正方形的红纸沿对角线对折后,得到一个等腰直角三角形,再沿斜边上的高对折,得到的又是等腰直角三角形,在此三角形上剪出一些花纹,然后打开折叠的纸,将它铺平,小明一下子就猜出了这个图案至少有( )条对称轴. A.0 B.2 C.4 D.6 2.剪纸是中国的民间艺术,剪纸的方法有很
2、多,下面是一种剪纸的方法.如图,先将纸折叠,然后剪出图形,再展开,即可得到图案. 下面四个图案中,不能用上述方法剪出的是( ) 3.如图,已知要在一块长方形的空地上修建一个花坛,要求花坛图案(阴影部分)为轴对称图形,图中的设计符合要求的有( ) A.4个 B.3个 C.2个 D.1个 4.如图,在33的正方形网格中已有两个小正方形被涂黑,再将图中其余小正方形任意涂黑一个,使整个图案构成一个轴对称图形的办法有( )种. A.3 B.4 C.5 D.6 5.如图,图案?是由图?中五种基本图形中的两种拼接而成的,则这两种基本图形是( ) A.? B.? C.? D.? 6.以给出的图形?,?, (两
3、个圆、两个三角形、两条平行线)为构件,设计一个构思独特且有意义的轴对称图形.举例:如图?是符合要求的一个图形,你还能构思出其他的图形吗?请在图?中画出与之不同的一个图形,并写出一两句贴切的解说词. 7.将一个正方形按下列要求割成4块: (1)分割后的整个图形必须是轴对称图形; (2)所分得的4块图形是全等图形. 请你按照上述两个要求,分别在图?,?,?中的正方形中画出3种不同的分割方法.(不写画法) 8.观察图?中的左右两个图形,它们是否成轴对称?如果是,请画出其对称轴. 9.下列图形是轴对称图形的是( ) 10.如图,将四边形纸片ABCD沿AE向上折叠,使点B落在DC边上的点F处.若?AFD
4、的周长为24 cm,?ECF的周长为8 cm,求四边形纸片ABCD的周长. 11.如图,?ABC内有一点D,且DA=DB=DC.若∠DAB=20°,∠DAC=30°,则∠BDC的大小是( ) A.100° B.80° C.70° D.50° 12.如图,已知?ABC和?BDE均为等边三角形.试说明:BD+CD=AD. 参考答案 1.【答案】B 2.【答案】C 3.【答案】A 4.【答案】C 5.【答案】B 6.解:能;答案不唯一,如图. 7.解:答案不唯一,如图. 8.解:题图?中的左右两个图形成轴对称,题图?中的左右两个
5、图形不成轴对称.题图?中成轴对称的两个图形的对称轴如图所示. 分析:判断两个图形是否成轴对称,关键是理解、应用两个图形成轴对称的定义,即看两个图形能否沿一条直线折叠后重合.若重合,则两个图形关于这条直线成轴对称,否则不成轴对称. 9.【答案】A 10.解:由题意可知,?ABE和?AFE关于直线AE成轴对称,所以AB=AF,BE=FE. 因为?AFD的周长为24 cm,?ECF的周长为8 cm, 即AD+DF+AF=24 cm,FC+CE+FE=8 cm, 所以四边形纸片ABCD的周长为AD+DC+BC+AB=AD+DF+FC+CE+BE+AB=(AD+DF+AF)+(FC+CE+FE)=24+
6、8=32(cm). 11.【答案】A 解:(方法一)因为DA=DB, 所以∠DBA=∠DAB=20°.因为DA=DC,所以∠DCA=∠DAC=30°. 在?ABC中,有∠DBC+∠DCB=180°-220°-230°=80°.所以∠BDC=180°-(∠DBC+∠DCB)=180°-80°=100°. (方法二)在?ADB中,由方法一可得∠ADB=180°-220°=180°-40°=140°.同
7、理∠ADC=180°-230°=120°.所以∠BDC=360°-140°-120°=100°.故选A. 12.解:因为?ABC,?BDE均为等边三角形, 所以BE=BD=DE,AB=BC,∠ABC=∠EBD=60°. 所以∠ABE+∠EBC=∠DBC+∠EBC. 所以∠ABE=∠DBC. 在?ABE和?CBD中, 所以?ABE?CBD(SAS).所以AE=CD. 又因为AD=AE+ED,ED=BD,所以BD+CD=AD. 北国的春风,阅读答案阅读看云
8、识天气(卷云)阅读选择题,有答案中国石拱桥阅读及答案九上语文课课练答案暑假作业八年级答案西旅游版小学五年级英语暑假作业答案暑假作业答案四年级下册署五语暑假作业答案七年级下册暑假作业答案四年级下册2016小学四年级英语暑假作业答案济南三年级暑假作业答案小学生三年级下册暑假作业的答案57页暑假作业八年级物理答案暑假作业本五年级下册答案物理暑假作业答案八年级下册小学五年级下册暑假作业答案2011小学三年级下册英语暑假作业答案小学综合暑假作业本五年级答案小学生三年级下册暑假作业的答案临沂河东凤凰实验小学的暑假作业八年级下册答案暑假作业答案七年级下语文网暑假作业答案05三年级英语1八年级下册暑假作业答案
9、七年级数学暑假作业本丁阳中学数学暑假作业答案4年级的暑假作业答案五年级暑假作业本语文参考答案八年级下册数学暑假作业本答案2014年暑假作业答案七年级下八年级下册物理暑假作业参考答案五年级暑假作业全部答案八年级下暑假作业本5年级暑假作业答案20162015五年级数学暑假作业答案三年级英语假期伙伴暑假作业答案三年级下册语文暑假作业答案2016年暑假作业答案5年级5年级下册暑假作业答案2016五年级暑假作业英语答案下载数学作业本八上答案2016初二八年级英语寒假作业本答案暑假作业答案四年级上册八年级C寒假作业本答案五年级上册暑假作业答案2017高一寒假作业本答案四年级暑假作业答案2017八年级历史暑
10、假作业答案暑假作业答案五年级语文2017暑假作业三年级答案六年级上册寒假作业本答案 英语(English)，属于印欧语系-日耳曼语族-西日耳曼语支。根据以英语作为母语的人数计算，英语是最多国家使用的官方语言，英语也是世界上最广泛的第一语言，也是欧盟和许多国际组织和英联邦国家的官方语言，拥有世界第三位的母语使用者人数，仅次于汉语和西班牙语母语使用者人数。下面是在线.小编整理的苏教版七年级下册英语课课练答案，供大家参考! 苏教版七年级下册英语课课练答案 一、听力 (共20小题，1-10小题每小题1分，11-20小题每小题2分，计30分) 第一部分 听对话回答问题。(10分) 本部分共有10道小题，
11、每小题你将听到一段对话，每段对话听两遍。在听每段对话前，你将有5秒钟的时间阅读题目;听完后，你还有5秒钟的时间选择你认为最合适的备选答案。在听到嘀的信号后，进入下一小题。 1. illies C. Millies sisters 8. Houch money an take an C. The man 10. r Green an dash; aths questions. A. ber 40, 392? A. four thousand three hundreds and niy tdash; It ' a fine day. Shall dash; _But e before s
12、ix. A. H ave a nice time! B. Not at all. C. You are right. D. Good idea! 三、完形填空。(共10题，每小题1分，计15分) It is very important to stay healthy. I have a neighbor. She is an old lady. She can do all the houseething neorning and dance in the evening. She is over seventy _44_ she looks young and beautiful. Las
13、t a magazine intervieile on her face, I have a secret of staying young and healthy. It is quite _47_. Keep your mind active(活跃), be interested in the an edical college(医科大学) an e people may say staying young is easy only for those atter(无论) _54_ you are, you can make it. Please tell the story to you
14、r family. I think people should _55_ the lady. I hope everyone ation B. ideas C. messages D. jobs 43. A. her B. him C. other D. others 44. A. and B. or C. but D. because 45. A. any 55. A. listen to B. learn from C. think of D. talk about 四、阅读理解. (共15题，每小题2分，计30分) A Music Club Music lessons(guitar, v
15、iolin, piano and drums) Time: 8:30 am-9:30 am every Sunday Price: Only $20 each Address: 25 Jiefang Road Tel: 420-258-1200 National Park Riding horses Boating Time: 11:00am-7:00pm every day Price: adults $15, children (ages 3-7) $ 8 Address: 95 the Fifth Avenue Tel: 208-683-3400 Art Museum 200 famou
16、s pictures More than 300 -6:00pm on opolis To? A. 11:00 am-7:00 pm every day B. 8:00 am – 6:00 pm on – 9:30 am every Sunday. D. 8:00 am – 6:00 pm on usic? A. 25 Jiefang Road. B. 95 the Fifth Avenue. C. 120 Xinjin Street. D. Thermopolis Touch should you pay? A. $ 15 B. $ 30 C. $38 D
17、. $45 59 It is Saturday. usic Club B. useum. D. r Jackson took his . At the ticket office, he asked, Houch shall I pay to get in? The an at the ticket office ansust buy three tickets. The an e your older son is five, I ile, Yes, that sounds right, but my kids Mr Jackson' s story, portant in the
18、modem society(社会). r Jackson spend _on their tickets to the aquarium at last. A. 20 dollars B. 40 dollars C. 60 dollars D. 80 dollars 68. Children can see _ in Blue Ocean Aquarium. A. dolphins B. lions C. rabbits D. tigers 69. The eans _. A. 激情 B. 友谊 C. 乐观 D. 诚实 70. r Jackson is very rich. B. Mr Jac
19、kson e money. C. Mr Jackson pays for his tore important than money. 第II卷 非选择题(共55分) 五、词汇 (每空1分，共15分) A) 根据句意和所给汉语提示，填写正确的单词 1. The _ (十二) of March is Tree Planting Day. Its the best time to plant trees. 2. I am sure theres nothing obile. 4. Nancys neetres. 5. My grandparents live in a small flat s.
20、6. Today, many young people like to make short _(录像). B) 根据句意,用所给单词的适当形式填空。 7. -any young people are ready to join them. Angela, 17 I visited a forest park last going to help build nee and then sleep under the moonlight. It ething good at the same time. Andy, 18 I looked after my neighbours pets las
21、t summer. This summer, I al centre and shoy care and love to more pets. I am sure to make friends ore animlas. Haitao, 16 Some children have problems e in many mer ichael, a shopkeeper, is excited too. He has a toy shop next door to Biggie Burger. He says, Maybe people inutes in my shop and pick up
22、something. The toeeting this Thursday to talk about it. Everyone is e of the fast food restaurant? _ _ 2. ichael do? _ 4. : My sons birthday is ing. I . : I like stamps um? : Ho the park to the theatre? : Sandy, is this your neine. Its my sisters. its Millies. 8. : That sounds great. I think 380 yua
23、n is enough. 9. illie. M: illie? : No, Im from France. But I stay in America for a fee bread, eggs, vegetables and fruit. Can you bring some drinks? M: Sure. Ill bring some juice and milk. 听第一篇短文，回答第13-15小题。 I am Tom. Let me tell you something about my family. My father other is a nurse. She has lon
24、g hair. There is alile on her face. She is good at singing and dancing. She often helps my sister and me 16 years old and my sister is te. She Green is a 15-year-old English schoolboy. His sister is 14. At present, Jim and Kate are at a school in Sydney, one of the biggest cities in Australia. They
25、have been there for t and Kate have also been to schools in America, France, Japan and China. This is because their father, Mr. Green, to any different countries. Mr. Green usually stays in one country for about toves him again. His family al. The Greens are a happy family and love seeing the and Ka
26、te have learned to speak French, Japanese and little Chinese. The tachines 3million 4square 5double 6vidoes 7is going to share 8to help 9chatting 10niieth 11artists 12s 9teacher 10helpful 七、1Biggie Burger. 2Its bad for people./Its unhealthy./Its bad and unhealthy. 3A shopkeeper. 4 Hamburgers and fri
27、ed chicken achines 8. dream(s) 9. if 10 happy 鹤,陆蠡阅读答案及解析(2014高考广东卷)(2)高考文学作品阅读散文阅读的解题技巧(5)秋天的黄昏,(2014山东济宁中考阅读答案)我们的身体需要变“碱”吗,阅读答案(2014北京丰台中考一模)电子药丸:把电脑吃进肚子,阅读答案(2014北京房山中考二模)道行,阅读答案(2014山东聊城中考试题)永远的门,阅读答案(2014山东烟台中考试题)鸟说,阅读答案(2014山东临沂中考试题)孔子相卫,阅读答案(2014内蒙古包头中考试题)给我的孩子们,阅读答案(2014四川南充中考试题)行者,阅读答案(201
28、4山东临沂中考试题)2014北京各区高三一模,海淀,东城,西城,丰台2014房山一模试题及答案2014丰台二模试题及答案2014广东省各市一模试题及答案2014海淀一模试题及答案2014上海各区一模试题及答案(杨浦区、浦东新区、奉贤区、虹口区、嘉定区、闵行区、普陀区、长宁区、徐汇区、闸北区、卢湾区、静安区、黄浦区)2015四川高考试题阅读答案,太湖碎锦填空、对话与兴味阅读答案绝妙的错误阅读答案及解题指导(3)贫富差距的代际传承阅读答案英语发芽，汉字开花阅读答案(2014年厦门市中考语文)2013?黄冈市中考说明文阅读“太和殿”附答案(2014聊城中考)道行阅读答案亲爱的爸爸妈妈导学案及答案(2
29、)云南的歌会,阅读答案(2013东营中考语文试题)中国传统文化,阅读答案(2012安徽高考语文试题)木木,阅读答案(2012湖南高考试题)太阳梦,阅读答案(2012重庆高考语文试题)战马记,阅读答案(2012重庆高考试题)活板,阅读答案(2014北京石景山中考一模)昆虫般大小的机器人,阅读答案(2014山东聊城中考试题)丑兵,阅读答案(2014江苏连云港中考试题)读书关乎心灵,阅读答案(2014内蒙古包头中考试题)小雨入端午,阅读答案(2014北京石景山中考一模)绵阳高2015届高三一诊生物测试及答案说说孟子认为怎样才能成为至善之人|阅读答案翻译译文试题睡眠为身体解毒,阅读答案(2014济宁中考语文试题)珍贵的军大衣,阅读答案(2014内蒙古包头中考试题)【俄】维克多?德拉贡斯基超级蛀虫阅读答案试题解析理解中学生英语知识竞赛试题小学阅读社团活动总结4篇“未至井陉口三十里，止舍”阅读答案及句子翻译“魏节乳母者，魏公子之乳母”阅读答案及句子翻译2013上海各区一模试题及答案2014绵阳一诊2013温州二模试题及答案2014南京三模2014濮阳二模2014石家庄质检二