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2017河北政府工作报告
河北省人民政府2017年《政府工作报告》
——2017年1月8日在河北省第十二届人民代表大会第五次会议上
张庆伟
各位代表:
现在,我代表省人民政府,向大会报告政府工作,请予审议,并请省政协委员和列席会议的同志提出意见。
一、2016年工作回顾
刚刚过去的一年,面对经济下行的较大压力,面对去产能治污染调结构的艰巨任务,面对“7·19”特大暴雨洪灾,全省人民紧密团结在以习近平同志为核心的党中央周围,在中共河北省委坚强领导下,全面贯彻落实党的十八大和十八届三中、四中、五中、六中全会精神,深入贯彻落实习近平总书记系列重要讲话精神和视察唐山时的重要指示,坚持新发展理念,坚持稳中求进工作总基调,着力推进供给侧结构性改革,经济发展呈现稳中向好、动力增强的新态势,干部队伍呈现凝心聚力、干事创业的新气象,全省上下呈现勠力同心、奋发进取的新风貌,较好完成了省十二届人大四次会议确定的目标任务,实现了“十三五”良好开局。
经济总量跨上新台阶,全省生产总值突破3万亿元、增长6.8%左右,地方一般公共预算收入2850.8亿元、增长7.6%,固定资产投资增长9%,社会消费品零售总额增长10%以上,规模以上工业增加值增长5%。结构调整步伐加快,装备制造业增加值超过钢铁工业成为第一大支柱产业,战略性新兴产业增速超过传统
产业,服务业对经济增长的贡献率超过第二产业。人民生活持续改善,城镇、农村居民人均可支配收入均
增长8%,城镇新增就业76万人,登记失业率控制在4.5%以内,居民消费价格上涨1.5%左右。全省发展稳的态势在持续、进的力度在加大、新的动能在成长、向好因素在累积。
(一)坚定不移提质增效,产业转型升级取得新进展。牢牢牵住化解过剩产能“牛鼻子”,全面落实“三去一降一补”重点任务。深入实施“6643”工程,重点行业去产能成效显著,全年共压减炼钢产能1624万吨、炼铁1761万吨、水泥286万吨、平板玻璃2189万重量箱,退出煤矿54处、压减煤炭产能1400万吨,均超额完成国家下达任务,企业职工得到妥善安置。去库存、去杠杆、降成本、补短板扎实推进。加大传统产业技术改造力度,技改投资增长5%左右。发展壮大“大智移云”等战略性新兴产业和现代服务业,推进军民融合产业发展,高新技术产业增加值增长15%左右,服务业增加值增长9.5%以上,规模以上工业企业利润预计增长15%。成功举办首届旅游产业发展大会,京西百渡等一批精品景区成为河北旅游新名片,全省旅游业总收入增长34%。农业生产稳中调优,粮食总产692亿斤,乳制品产量连续两年居全国第一,农业产业化经营率达到66.6%,农业现代化建设加快推进。
(二)积极主动对接京津,区域协同发展实现新突破。认真落实京津冀协同发展规划纲要,出台实施我省总体规划、功能定位规划和27个专项规划,年度103项重点任务全部完成。积极承接非首都功能疏解,打造北京新机场临空经济区、曹妃甸协同发展示范区、芦台·汉沽津冀协同发展示范区等重点承接平台。交通、生态环保、产业三个领域率先突破成效明显,京津冀地区城际铁路网规划获国家批复,首都地区环线高速河北段全线贯通,全省港口吞吐量达到9.5亿吨。京津冀大气污染防治、水资源保护等实现联防联治和信息共享,北京现代汽车沧州工厂等一批产业项目建成投产,全年引进京津资金3825亿元。协同创新共同体建设取得重大进展,石保廊全面创新改革试验区、京南科技成果转移转化示范区、京津冀大数据综合试验区纳入国家总体布局。冬奥会筹办扎实推进,高质量编制赛区规划,完成赛事核心区征地搬迁,基础设施加快建设。京津对口帮扶工作全面启动。协同发展的巨大红利加速释放。
(三)矢志不渝改革创新,新旧动能转换迈出新步伐。着力抓改革、破难题、增活力,水资源费改税在全国率先启动,顺利完成供销社综合改革和自然资源资产审计等国家试点任务。“放管服”改革纵深推进,取消下放省级行政审批事项122项,行政审批局试点扩大到33个县。省级机关内设机构改革取得阶段性重要成果。全面推行“多证合一、一照一码”,新增市场主体102.4万户、增长38.6%,民营经济增加值增长7%以上。国企改革制度体系初步建立,“三供一业”改革启动实施。积极财政政策有效落实,省以下财政管理体制不断完善,“营改增”全面推开。金融支撑作用增强,中国进出口银行河北分行正式运营,政策性银行实现全覆盖。新增各类挂牌上市企业260家。土地征收制度改革试点有序开展,全省土地承包经营权确权登记顺利实施。科研经费使用管理、成果转化激励等科技体制改革不断深化,新增科技型中小企业1.1万家、高新技术企业400家,“双创”氛围日渐浓厚。加快构建开放型经济新体制,全省实际利用外资增长10%,对外直接投资增长40%。推动优势产能“走出去”,习近平总书记亲自视察河钢塞尔维亚钢厂。成功举办唐山世界园艺博览会、中国—中东欧地方领导人会议、中国—拉美企业家高峰会、中国奶业D20峰会和全国知名民营企业助推河北协同发展大会。开发区改革发展全面提速,成为拉动经济增长的重要引擎。
(四)坚持不懈治理污染,生态环境质量得到新改善。持续加力防治大气污染,坚决落实中央环保督察反馈意见,集中开展散煤、焦化、露天矿山、道路车辆污染整治专项行动,推进重点区域无煤化和燃煤清洁利用,大力整治成品油市场,强化重污染天气应急响应,淘汰改造燃煤锅炉1.3万台,削减煤炭消费量500万吨,压减焦炭产能1279万吨,取缔关闭非煤矿山161个,淘汰老旧车14.2万辆,全省PM2.5平均浓度下降9.1%,达标天数增加16天,廊坊市全年空气质量综合指数退出全国74个重点城市“倒数前十”。开展水污染防治百日会战,完成13条城市黑臭水体整治,潘家口、大黑汀水库网箱养鱼清理工作成效明显。山水林田湖生态修复国家试点获批,启动太行山绿化和“矿山披绿”攻坚战,全省完成造林523万亩。地下水超采综合治理新增农业压采能力7.1亿立方米,建成111座南水北调配套工程水厂,引黄入
冀补淀工程全线开工。在全国率先实行省级环保督察,改革省以下环保机构监测监察执法垂直管理体制,开展“利剑斩污”专项执法行动,查处环境违法企业3300多家,有力打击和震慑了环境违法行为。
(五)协调推进城乡一体,新型城镇化建设开创新局面。坚持完善城镇功能与建设美丽乡村双轮驱动,促进人口、产业聚集,常住人口城镇化率达到53%。全省空间布局规划基本完成,新一轮城市总体规划修编启动实施,张家口、衡水、邯郸行政区划调整到位,新型城镇化综合试点稳步推进。投资2860亿元完善市政基础设施,城市承载能力进一步增强。启动县城建设三年攻坚行动,加快实现集中供水、供热和垃圾达标处理,县城品质不断提升。以环境美、产业美、精神美、生态美为标准,在4260个重点村全力推进美丽乡村建设,农村面貌发生积极变化。
(六)倾心尽力改善民生,人民群众获得感得到新提升。优先增加民生投入,全年财政用于民生支出4843.8亿元、占一般公共预算支出的80.2%。全面打响脱贫攻坚战,实施“五个一批”工程,启动15.2万人易地扶贫搬迁,推进产业、教育、医疗、金融扶贫,实行低保线和扶贫线“两线合一”,预计100万农村贫困人口稳定脱贫。多渠道拓宽就业岗位,做好重点群体就业安置,高校毕业生就业率95.3%,新增农村劳动力转移就业56.2万人,零就业家庭保持动态为零。企业和机关事业单位退休人员养老金待遇进一步提高,城乡居民年低保标准分别增长11.6%和25.8%,城乡居民基本医疗保险制度整合基本完成。全省棚户区改造开工建设18.3万套,改造农村危房12.5万户。完成学前教育三年行动计划二期目标,改造中小学校舍288.3万平方米,高校“双一流”建设稳步推进。健康河北建设强力启动,“全面两孩”政策落地实施。文化事业和文化产业快速发展。全民健身运动广泛开展。食品药品安全监管力度加大,安全生产形势总体稳定。深入实施“护城河”工程,平安河北建设扎实推进。国防动员、双拥共建和优抚安置工作进一步加强。民族宗教、新闻出版广电、外事侨务、人民防空、史志档案、气象地震、地理信息、援藏援疆、妇女儿童、老龄、残疾人等事业都有了新的发展和进步。
各位代表!去年我省发生了历史罕见的特大暴雨洪灾,全省上下认真贯彻习近平总书记关于防汛抗洪抢险救灾的重要指示,紧急动员、迅速行动,果断决策、周密部署,第一时间全力开展抗洪抢险救灾,紧急转移安置群众41.8万人,有力有序推进水毁设施灾后重建,最大限度保护了人民群众生命财产安全,最快速度恢复了受灾群众基本生产生活。在这场特大暴雨洪灾的考验中,燕赵儿女万众一心、众志成城,彰显了攻坚克难、勇往直前的宝贵精神!
各位代表!一年来,我们坚决维护以习近平同志为核心的党中央权威,切实增强政治意识、大局意识、核心意识、看齐意识,有力推动了党中央、国务院和省委决策部署的落实;坚决贯彻党对经济工作的领导,紧紧扭住发展第一要务,以新发展理念引领发展,唱响协同发展、转型升级、又好又快工作主基调,更大力度抓改革、促创新,有力激发了经济发展的内生动力;坚决践行以人民为中心的发展思想,真心诚意保障改善民生,让人民群众享受更多发展成果,有力维护了社会大局和谐稳定;坚决推进政府自我革命,严格落实中央“八项规定”精神,深入开展“两学一做”学习教育,大力推进省级机关作风整顿,自觉接受人大法律监督、政协民主监督和社会监督,加强党风廉政建设,加快政府职能转变,有力营造了树正气、讲团结、聚合力、促转型的浓厚氛围。在国内外环境严峻复杂、多重困难挑战并存的形势下,我们顶住了压力,战胜了挑战,经受了考验,取得这些成绩实属不易。这是党中央、国务院坚强领导的结果,是全省上下团结奋斗的结果。在此,我代表省人民政府,向全省人民,向人大代表、政协委员,向各民主党派、工商联、无党派人士和人民团体,向驻冀人民解放军、武警官兵和政法干警,向中直驻冀各单位,向所有关心支持河北建设的港澳台同胞、海外侨胞和国际友人,致以崇高的敬意和衷心的感谢!
各位代表!在肯定成绩的同时,我们也清醒地看到我省发展中还存在不少困难和问题:结构性和体制性矛盾交织,产能过剩和需求结构升级矛盾突出,城市经济、县域经济、沿海经济实力不强,发展的质量效益不高;经济下行压力依然较大,实体经济困难较多,财政收支矛盾加剧,去产能任务繁重,新旧动能转换不快;环境污染问题突出,秋冬季重污染天气时有发生;城乡居民收入不高,公共服务水平较低,
江苏省南京市高淳区2017年7B Unit1 Dream homes单元试卷含答案
Unit 1 Dream homes
一、用所给词的适当形式填空
1. The story in this book is __________ (real) interesting.
2. —Are there any shops ___________(在……的对面)your school? —Sorry, I’m new here.
3. Their classroom is next to __________(we).
4. Millie came __________(five) in the English test.
5. You look __________(worry). What’s up?
6. He doesn’t look like a young man in his __________(thirty)
7. There are nine __________(hundred) pupils in this school.
8. There are many _________(bookshelf) in the library.
9. He is good at __________ and he is a good __________(climb).
10. Lily wants to be a member of the __________ (dance) club.
二、选择填空
( ) 1. May I ______ at my aunt’s for two nights?
A. live
A. play B. stay C. to live D. to stay ( ) 2. My sister and I have to ______ a room. B. ake C. chat D. share
C. She’s tall and thin
D. All the above
D. Why
D. from
D. that car D. She’s very good. ( ) 3. —What does your English teacher look like? —______. A. She’s thirty B. She likes reading A. to B. about B. Who B. above ( ) 4. Let’s talk _____ our foreign friends this afternoon. C. with C. Which C. on ( ) 5. Oh, you have so many nice hair clips! ______ is your favorite one? A. What A. over ( ) 6. Many houses in Thailand are ______ rivers. ( ) 7. The color of this car is different from ______. A. these cars
A. in B. those cars C. the color of that one B. on C. at D. pf
D. not to make
D. far away
D. own, own ( ) 8. The car accident happened ______ a cold winter evening. ( ) 9. The teacher asked those boys ______ so much noise. A. do not make A. far with B. not make B. far from C. not making C. from far ( ) 10.Beijing is ______ Guangzhou. ( ) 11.Jack has his ______ cows and horses. He is an ______ of a farm. A. owns, own
A. get to B. own, owner C. owner, own D. arrive at
D. Fourty-third ( ) 12. —When did you ______? —Three hours ago. B. reach C. arrive ( ) 13. ______ student comes from Britain. A. Fourty- three B. Forty- three C. The forty-third
( ) 14. Yangzhou is a good place ______, whether in winter or summer.
A. going B. goes C. go to D. to go to
( ) 15. Simon ______ in his bathroom after supper every day.
A. has a shower B. takes hot bath
C. has cold bath D. has shower ( ) 16. The room on the second floor is used ______. A. for seeing videos C. to seeing videos B. for watching videos D. to watching videos
( ) 17. I would like to visit Canberra, the capital of ______.
A. Italy B. Thailand
A. What else
A. watch
A. happily
三、 句型转换
1. 划线提问)
__________ __________ is your monitor?
2. The cat often lies on the ground near the school gate. ( 用at the moment 替换often) The cat __________ __________ on the ground near the school gate at the moment.
3. Mary lives on the second floor. Lucy lives on the seventh floor.(合并成一句)
Lucy lives _________ floors __________ Mary.
4. John likes to listen to music while he is doing his homework. (同义句)
John likes to listen to music and does his homework __________ __________ __________ __________.
5. Tom and Jim seldom listen to music, __________ __________? (反义疑问句)
6. You’d better open the windows now. (否定句)
__________ ___________ __________ open the windows now.
7. He has two bedrooms and two bathrooms in his flat.( 同义句)
He __________ a flat __________ two bedrooms and two bathrooms.
8. The cupboard is not the same as the wardrobe.
The cupboard is __________ __________ the wardrobe.
四、 情景对话
请根据对话情景,用方框内词的最佳形式填空。
Daughter: What shall we do on Sunday?
Father: Well, we could __1__ sight-seeing. It’s spring now. It’s the __2__ season of the year. Daughter: How about __3__ to Tiger Hill? I haven’t been there for ages.
Father : __4__ . Let’s go there then.{2017高淳政府工作报告}.
Mother : Why don’t we go for a walk this evening?
Daughter: I’d rather stay at home.. There is a very good programme on TV. I must hurry and{2017高淳政府工作报告}.
C. Australia D. the UK C. Where other place D. watching D. friendly D. What else place ( ) 18. ______ are you going for a holiday? B. Where else ( ) 19 Lisa with her friends ______ TV every Saturday afternoon. B. watches B. greatly C. are watching C. well ( ) 20. His words sound ______.
finish my homework before it __5__.
Father: All right. You stay at home and we’ll go for a walk. Who’s going to __6__? I’m hungry. Mother : Let’s all help to get it.
1.__________ 2. ___________ 3. ___________ 4. ___________ 5. ___________ 6. __________
五、改错
( _____________
A B C D
( _____________
A B C D
( _____________
A B C D
( _____________
A B C D
( _____________
A B C D
六、完成句子
1. 他住在山里的一座木屋里。
He lives in a __________ __________ in the __________.
2. 有些宝宝很难照看。
Some __________ ___________ ___________ __________ __________ ___________.
3. 你正在和你的同学们分享你的喜悦吗?
Are you __________ __________ __________ __________ your classmates?
4. 我的梦想家园很美,至少有三层楼房。
My __________ __________ is beautiful and it has __________ __________ _________ __________.
5. 这条河大约四百米长。
____________________________________________________________________________
6. 当你回来时不要忘了给我打个电话。
____________________________________________________________________________
七、 完形填空
Paris has a beautiful name, the city of __1__. Do you know __2__ it means? Many beautiful buildings are lit at __3__. The streets are very __4__. When you __5__ in Paris, you needn’t turn __6__ your headlights even after dark. Paris is full of life all day and all night. But this is not the __7__ reason for its beautiful name. For hundreds of years , Paris has been the center of science and art. __8__ scientists and artists have come to __9__ here. For this reason also, people __10__ it the City of lights.
( ) 1. A. Flowers B. Cars C. Lights D. Rivers
( ) 2. A. what B. night C. where D. when
( ) 3. A. noon B. night C. day D. evening
( ) 4. A. black B. dark C. noisy D. bright
( ) 5. A. walk B. go C. drive D. live
( ) 6. A. off B. down C. out D. on
( ) 7. A. only B. other C. any D. another
( ) 8. A. No B. Few C. Many D. A few
( ) 9. A. study B. drive C. play D. have dinner
( ) 10.A.make
八、阅读理解 B. call C. build D. find
(A)
New York can be a very dangerous city, especially at night. Many people didn’t go out alone onto the streets after dark. This problem is even worse for a single woman like Miss Brown. As a singer, she had to driver home after the show. She needed a friend when she was driving. She found a man a shaped balloon named Bob and put him in the back seat of her car when she drove at night. People in the street thought the woman driver had a man with her, and she felt safe.
( ) 1. The story took place in ______.
A.America B.England C.A small city D.France
( ) 2. How did Miss Brown go to clubs?
A.By bus B.By bike C.By car D.On foot.
( ) 3. Why did she need a friend in her car?
A. Because she thought it was very interesting to do so.
B. Because she was afraid of people in the street.
C. Because she wasn’t allowed to go out alone at night.
D. Because it wasn’t safe for her to go out alone at night.
( ) 4.Which of the following is true?
A. The woman was in danger if she went out alone at night.
B. The woman never went out at night.
C. The woman had no friend but Bob.
D. The woman had a car and she could drive with Bob’s help.
(B)
Here are some facts about homes in the United States and the people who live in them. In the early 1990s, about fifty percent of the Americans own their homes and the rest rent(租) their homes. The rented homes are usually apartments.
74% of the people in the US make their homes in or around cities. 26% live in the country. Dogs live in about 40% of all homes in the US. About half that number have cats.
Families in the US are becoming smaller. On the average(平均), 2.64 people lived in a home in early 1990s. In 1960, the average was 3.5.
Half of the teenagers in the US have their own bedrooms.
An American moves, on the average, twelve times in his or her life. In Japan a person moves about five times, and in England a person eight times.
( ) 5. According to the passage, where do most American live?
A. In the cities B. Around the cities
C. In the country D. Both A and B
( ) 6. How many American families own a cat?
A. 40% B. 26% C. 74% D. 20%
( ) 7. Families in the US are ______.
A. becoming bigger
C. no change B. becoming smaller D. not sure
( ) 8. Do all the teenagers in the US have their own bedrooms?
A. Yes, they do B. No. Half of them do
C. No. 5% of them do D. I don’t know.
( ) 9. The passage is about _______.
A. people and homes in the United States
B. dogs and cats in American homes
C. teenagers’ bedrooms
D. moving house
九、词汇知识。(每小题1分,满分15分)
A)根据所给汉语、首字母、音标提示,用合适的单词填空。
36. Millie’s and Amy’(宫殿).
(录像) at .
/ [ˈdʌbl]/ service(服务)?
/[ʃeə(r)]/ her pencils with her classmates.
B) 用括号内所给单词的适当形式填空。
41. Tom, don’(knife). They are very sharp(锋利的).
(foot) long.
(nine) time to visit the Great Wall.
C) 选择方框里合适的词组填空,并注意形式的变化。
46. Millie always_______ playing basketball with her classmates after school.
47. The house_______ furniture(家具) I can’t get into it at all.
when you go home tomorrow?
49. It’s bad for your eyes to read books_______.
in her new flat. .
十、完成句子,每空一词。(每小题2分,满分10分)
51、法国面积超过26万平方英里。
France _______ _______ _______ _______ over 260,000 square miles.
52、课堂上不要朝外看树上的鸟。
Don’t_______ _______ _______ the birds in the tree in class.
53、老舍茶馆是互相聊天最好的地方。
Laoshe Teahouse is_______ _______ _______ _______ chat with each other.
54、你的房子和我们镇上的公寓真不一样。
Your house_______ _______ _______ _______ the flats in our town.
55、谢谢你邀请我来参加你的99岁生日宴会。
Thank you for_______ _______ _______your_______ birthday party.
十一、阅读下面的材料,完成后面的表格,每个空格只能填一个单词。(每小题1分,满分10分)
Bill Gates lives in a very modern house in the USA. It’s in the town of Medina near Lake Washington. He spends$63,000,000 in building the house. His house doesn’t look big because much of it is in a hill. It is about 6,600 square metres in size.
The modern and large house has a swimming pool with a music system(系统). Bill Gates and his friends can enjoy swimming and listening to music at the same time. It has a beach. And the sand(沙{2017高淳政府工作报告}.
) on it is from the sea. He can take a walk on the real beach after supper.
高淳单项备案表
外来建筑施工企业单项登记申请表
企业名称(公 章):
经 办 人 姓 名:
联 系 电 话:
日 期:
南京市高淳区建筑工程局
一、企业基本情况
二、企业驻高淳基本情况
三、企业拟承揽工程情况
四、人口与计划生育管理责任书
五、承诺书
南京市高淳区2016-2017学年第一学期九年级数学期末试卷
九年级(上)期末试卷
数 学
一、选择题(本大题共6小题,每小题2分,共12分.在每小题所给的四个选项中,恰有一项是符合题{2017高淳政府工作报告}.
目要求的,请将正确选项的序号填涂在答题卡相应位置上) .......1.若△ABC∽△A′B′C′,相似比为1︰2,则△ABC与△A′B′C′的面积的比为( ▲ ) A.1︰2 B.1︰4 C.2︰1 D.4︰1 2.一元二次方程x(x-1)=0的根是( ▲ )
A.1
B.0
C.0或1
D.0或-1
3.下表记录了甲、乙、丙、丁四名跳远运动员几次选拔赛成绩的平均数-x与方差S2:
根据表中数据,要从中选择一名成绩好又发挥稳定的运动员参加比赛,应该选择( ) A.甲 B.乙 C.丙 D.丁 4.抛物线y=3x2-1的顶点坐标是( ▲ )
A.(3,-1) B.(-1,3) C.(-1,0) D.(0,-1)
是( ▲ )
A.y=-2x2-4x-1 C.y=-2x2+4x-1
二、填空题(本大题共10小题,每小题2分,共20分.不需写出解答过程,请直接填写在答题卡相应位......
置上) .7.已知
B.y=-2x2-4x+1 D.y=-2x2+4x+1
6.二次函数y=2x2+4x+1的图像记为G,若G关于x轴对称的图像为G′,则图像G′对应的函数表达式
xyxy,则= ▲ . 35xy
8.某项目6名礼仪女生的身高如下(单位:cm):168,166,168,167,169,168,则她们身高的众数是 cm.
9.抛掷一枚质地均匀的硬币2次,2次都是正面朝上的概率是.
10.点C是AB的黄金分割点(AC<BC),AB=2,则BC的长为
1
11.若点A(-,a),B(2,b),在函数y=-(x-1)2的图像上,则a、b的大小关系为
2
12.已知方程x²+mx+3=0的一个根是1,则它的另一个根是
13.如图,在⊙O中,CD是直径,弦AB⊥CD,垂足为E,连接BC,若⊙O的半径=2cm,∠BCD=22°30′,则弦AB的长为 ▲ cm.
1
yy=x
1
y2
B
B
第15题图
O
第{2017高淳政府工作报告}.
A
(第13题)
(第14题) (第15题)
14.如图,沿一条母线将圆锥侧面剪开并展平,得到一个扇形,若圆锥的底面圆的半径r=2cm,扇形的圆心角θ=120°,则该圆锥的母线长l为 ▲ cm.
15.如图,在⊙O的内接五边形ABCDE中,∠B+∠E=220°. 则∠CAD= ▲ .
16.如图,在矩形AOBC中,点A的坐标是(-2,1),点C的纵坐标是4,则C点的横坐标是 ▲ .
(第16题)
三、解答题(本大题共11小题,共88分.请在答题卡指定区域内作答,解答时应写出文字说明、证明过........程或演算步骤)
17.解方程: (x1)3(x1).
18.某校为了解初三年级1000名学生的身体健康情况,在该年级中随机抽取了若干名学生测量了他们的身高,并将他们的体重(均为整数,单位:kg)分成五组:(A:39.5~46.5;B:46.5~53.5;C:53.5~60.5;D:60.5~67.5;E:67.5~74.5) .并依据统计数据绘制了如下两个不完整的统计图.
2
解答下列问题:
(1)这次抽样调查的样本容量是 ▲ ,并补全频数分布直方图;
(2)C组学生的频率为 ▲ ,在扇形统计图中D组的圆心角是 ▲ 度;
(3)请你估计该校初三年级体重超过60kg的学生大约有多少名?
19. 一只不透明的袋子中,装有两个红球一个白球,这些球除颜色外其余都相同.搅匀后从中任意摸出一个球,记录下颜色后放回袋中并搅匀,再从中任意摸出一个球, 记录下颜色. (1)列出上述实验中两次摸得球的颜色的所有可能的结果; (2)求两次摸到的都是红球的概率.
20. 如图,阳光下,小亮的身高如图中线段AB所示,他在地面上的影子如图中线段BC所示,线段DE表示旗杆的高,线段FG表示一堵高墙.
(1)请你在图中画出旗杆在同一时刻阳光照射下形成的影子;
(2)如果小亮的身高AB=1.6m,他的影子BC=3.2m,旗杆的高DE=15m,旗杆与高墙的距离EG=16m,请求出旗杆的影子落在墙上部分GM的长度.
21.如图,是一个抛物线形拱桥的示意图,桥拱在竖直平面内与水平桥面相交于(第20题) A、B两点,桥拱最高点C到AB的距离为8米,AB=32米,D、E为桥拱底部的两点,且DE∥AB.
(1)
以C为原点,过点C平行于AB的直线为x轴,建立如图所示的平面直角坐标系,试求出该抛物线的表达式;
9
(2)若点E到AB的距离为 米,试求DE的长.
2
上,AD交PN于点E.已知BC=48,AD=16,设PQ=x.
22.如图,在△ABC中,AD是高,矩形PQMN的顶点P、N分别在边AB、AC上,顶点Q、M都在BC
1
(1)当x为何值时,矩形PQMN的面积是△ABC面积的 ?
4(2)当x为何值时,矩形PQMN的面积最大?最大面积是多少?
(1)求证:∠CAD=∠BAO;
(2)已知AB= m,AC= n,AD= h,求⊙O的半径(用m、n、
24.已知函数y=mx2-6x-7 (m是常数) .
(2)若该函数的图像与x轴只有一个交点,求m的值.
(第22题)
23.如图,⊙O是△ABC的外接圆,AD是△ABC的高,连接OA.
(第23题)
(1)当m=-1时,该函数的图像与直线y=2有几个交点?试说明理由;
25.如图,△ABC中,AB=AC,以AB为直径的⊙O与BC相交于点D,与CA的延长线相交于点E,过点D作DF⊥AC于点F. (1)求证:DF是⊙O的切线; (2)若 AC=3,AE=1,求DF的长 .
(第25题)
26.如图,C为∠AOB的边OA上一点,OC=6,N为边OB上的一动点(不与点O重合),连接CN.四边形OMPQ为菱形,其中点M、P、Q分别在边OC、CN、NO上.
(1)若ON=3,求OM的长. (2)当点N在边OB上运动时,
11
①求证 - 的值为常数;
OMON
②设菱形OMPQ的面积为S1,△NOC的面积为S2,OM=x, S1
=y,求y与x的函数关系式,直接写出自变量x的取值范2
围,并求出函数y的取值范围.
Q O
N
M (第26题)
C