答案

001、五个兄弟，住在⼀起，名字不同，⾼矮不齐。

【谜底】⼿指 002、⼀个⿊孩，从不开⼝，要是开⼝，掉出⾆头。

【谜底】⽠籽 003、⼈脱⾐服，它穿⾐服，⼈脱帽⼦，它戴帽⼦。

【谜底】⾐帽架 004、屋⼦⽅⽅，有门没窗，屋外热烘，屋⾥冰霜。

【谜底】冰箱 005、两只⼩⼝袋，天天随⾝带，要是少⼀只，就把⼈笑坏。

【谜底】袜⼦ 006、弟兄七⼋个，围着柱⼦坐，只要⼀分开，⾐服就扯破。

【谜底】蒜 007、独⽊造⾼楼，没⽡没砖头，⼈在⽔下⾛，⽔在⼈上流。

【谜底】⾬伞 008、⾝穿⼤⽪袄，野草吃个饱，过了严冬天，献出⼀⾝⽑。

【谜底】绵⽺ 009、⼀个⼩姑娘，⽣在⽔中央，⾝穿粉红衫，坐在绿船上。

【谜底】荷花 010、颜⾊⽩如雪，⾝⼦硬如铁，⼀⽇洗三遍，夜晚柜中歇。

【谜底】碗 011、有⾯没有⼝，有脚没有⼿，虽有四只脚，⾃⼰不会⾛。

【谜底】桌⼦ 012、⽩嫩⼩宝宝，洗澡吹泡泡，洗洗⾝体⼩，再洗不见了。

【谜底】⾹皂 013、⾝穿绿⾐裳，肚⾥⽔汪汪，⽣的⼦⼉多，个个⿊脸膛。

【谜底】西⽠ 014、不怕细菌⼩，有它能看到，化验需要它，科研不可少。

【谜底】显微镜 015、象只⼤蝎⼦，抱起似孩⼦，抓挠肚肠⼦，唱出好曲⼦。

【谜底】琵琶 016、是笔不能画，和电是⼀家，要知有⽆电，可去请教它。

【谜底】测电笔 017、圆筒⽩浆糊，早晚挤⼀股，兄弟三⼗⼆，都说有好处。

【谜底】⽛膏 018、上不怕⽔，下不怕⽕;家家厨房，都有⼀个 (打⼀⽣活⽤品)。

【谜底】锅 019、⼀个⽼头，不跑不⾛;请他睡觉，他就摇头 (打⼀物)。

【谜底】不倒翁 020、⼤姐⽤针不⽤线，⼆姐⽤线不⽤针，三姐点灯不⼲活，四姐做活不点灯。

(打四种动物)【谜底】蜜蜂，蜘蛛，萤⽕⾍，纺织娘 021、驼背公公，⼒⼤⽆穷;爱驮什么车⽔马龙(打⼀物)。

【谜底】桥 022、头戴红帽⼦，⾝披五彩⾐，从来不唱戏，喜欢吊嗓⼦(打⼀动物)。

【谜底】公鸡 023、先修⼗字街，在修⽉花台，⾝⼦不⽤动，⼝粮⾃动来(打⼀动物)。

习题11-1 质点作曲线运动，在时刻t 质点的位矢为r ，速度为v ，t 至()t t +∆时间内的位移为r ∆，路程为s ∆，位矢大小的变化量为r ∆（或称r ∆），平均速度为v ，平均速率为v 。

（1）根据上述情况，则必有（ B ） （A ）r s r ∆=∆=∆（B ）r s r ∆≠∆≠∆，当0t ∆→时有dr ds dr =≠ （C ）r r s ∆≠∆≠∆，当0t ∆→时有dr dr ds =≠ （D ）r s r ∆=∆≠∆，当0t ∆→时有dr dr ds == （2）根据上述情况，则必有（ C ）（A ）,v v v v == （B ）,v v v v ≠≠ （C ）,v v v v =≠ （D ）,v v v v ≠=1-2 一运动质点在某瞬间位于位矢(,)r x y 的端点处，对其速度的大小有四种意见，即（1）dr dt ；（2）dr dt ；（3）dsdt；（4下列判断正确的是：( D )（A ）只有（1）（2）正确 （B ）只有（2）正确 （C ）只有（2）（3）正确 （D ）只有（3）（4）正确1-3 质点作曲线运动，r 表示位置矢量，v 表示速度，a 表示加速度，s 表示路程，t a 表示切向加速度。

对下列表达式，即（1）dv dt a =；（2）dr dt v =；（3）ds dt v =；（4）t dv dt a =。

下述判断正确的是（ D ）（A ）只有（1）、（4）是对的 （B ）只有（2）、（4）是对的 （C ）只有（2）是对的 （D ）只有（3）是对的 1-4 一个质点在做圆周运动时，则有（ B ） （A ）切向加速度一定改变，法向加速度也改变 （B ）切向加速度可能不变，法向加速度一定改变 （C ）切向加速度可能不变，法向加速度不变（D ）切向加速度一定改变，法向加速度不变*1-5 如图所示，湖中有一小船，有人用绳绕过岸上一定高度处的定滑轮拉湖中的船向岸边运动。

1．B 2．D 3．时间空间夏江河径流量南北东西4．(1)17升(2)节水与接水谐音，意为节约每一滴用水(3)略(二)1．A 2．D 3．C 4．沉淀过滤蒸馏蒸馏蒸馏水5．过滤铁架台、漏斗、玻璃棒、烧杯、滤纸滤纸破了或滤液高于滤纸边缘(1)没有用玻璃棒引流(2)滤纸边缘高于漏斗边缘(3)漏斗末端没有紧靠烧杯内壁6．(1)B (2)D (3)过滤(4)不是7．(1)结晶(2)过滤8．D 9．B 10．汽化液化复习题1．A 2．D 3．A 4．C 5．D 6．C 7．A 8．B 9．B 1O．D 11．C 12．A 13．D 14．C 15．C 16．(1)海洋水陆地淡水冰川水地下淡水(2)海洋水冰川水17．氧气氢气氢和氧18．增大相等密度19．向上物体排开的液体受到的重力20．增大不变21．2.5×104 22．(1)不饱和(2)升高温度或加水23．(1)溶质溶剂(2)物质溶解能力与温度的关系24．盐水密度增大，马铃薯会上浮而不会下沉，与现象不符合错误大于25．(1)常温下苯甲酸的溶解度很小(2)温度高时苯甲酸溶解得多(3)缓慢冷却到室温26．(1)增大减小(2)等于(3)210.5 27．0.9×103千克/米3 28．59.3毫升960.8克29．(1)p=833千帕因p>p0，所以，该车对路面的压强超过规定值(2)过大的压强损坏路面，且质量过大(车的惯性大)，不好操纵，易出交通事故。

30．(1)水面离“0牛”刻度线的距离h与物重G成正比(2)7 (3)10牛第2章地球的“外衣”——大气第1节大气层1．1000 2．(1)①对流层②平流层③中间层④暖层⑤外层(2)①③②④(3)大气具有强烈的对流运动(4)②3．A 4．A 5．D 6．B 7．D 8．(1)略(2)3.6 (3)-8 9．乙杯中的空气会对流第2节天气和气温1．温度湿度2．气温冷热3．温度计摄氏度(℃) 4．普通最高最低一天中的气温是在不断变化的5．(1)午后2时日出前后(2)天气6．D 7．C 8．A 9．(7+15+13+5)÷4=10第3节大气的压强1．大气压2．10.1牛3．流速流速4．C 5．A 6．B 7．A 8.B 9．C 10．C 11．9×104帕12．略第4节大气压与人类生活1．大气压大气压2．大于高于3．零降低4．增大正在沸腾的水停止沸腾减小停止沸腾的水重新沸腾液体的沸点与气压有关，气压增大，沸点升高5．D 6．C 7.C 8.B 9．A 10．A 11．减小大气压增大12．②②③⑤第5节风1．(1)× (2)× (3)√ 2．吹来八3．A-西北风B-北风C-东北风D-东风E-东南风F-南风G-西南风H-西风4．空气流动风级5．B 6．A 7．D 8.A 9．A 10．略第6节为什么会降水1．(1)× (2)× (3)√ (4)√ 2．(1)干湿差：A-2 B-5 C-1 D-3 E-4 F-5 (2)相对湿度：A-71 B-44 C-90 D-74 E-68 F-6l (3)C>D>A>E>F>B 3．D 4.C 5．A 6．B 7．(1)家鸡性喜干燥，雨前鸡笼里特别湿闷，所以它不愿意早进笼去。

英语综合训练一单元C.She graduated from college at a very advanced age.A.pursue a higher degree.D.the link between loudness and hearing loss.D.about half of them listen to music above safe sound levels.B.she is driving to visit her relatives.B.the radiator is too hot.C.the water level is too low in the radiator.A.keep a bottle of water in her car at any time.D.It was a terrible experience in some ways.C.she thinks the man better than her as a tourist.A.the travel agent didn't warn him of the hot weather.D.the foreign food didn't agree with him.D.he was a professor of engineering.A.he invented the refrigerator.C.he clearly knew what he wanted for himself.C.some young Japanese's different lifestyle.D.they are willing to choose short-term,part-time jobsD.people will have no money to support retirement.C.she like she brother was not as englishA.those creative in their workB.She graduated from universities with high standardsC.She actually said nothing to him but thanksD.DeterminationD.. He gives students in using proper techniques for their studyB.more students have chosen to stay in schoolB.write about their past,present and future livesA.the students were all making good progress in their study.C.minority people are not as rich and educated as those in the majority 二单元B.the salaries for-profit private college graduates can earnD.8000D.they are not emotionally ready for collegeC.how to deal with social and life challengesB.he went to train for tennisB.basketball is not his favorite sportsC.he accepted his son’s decision with reasonD.watch his former teammates playA.psychologistC.both men and women have this problemB.something excitingA.by self-questioningC.a possible reason for decision-making stylesD.she gives them responsibilitiesA.they can’t make their own decisionD.he will surely have no points for the examA.students should ask questions and join discussionsC.once a weekA.he didn’t want children because he didn’t think they could bring happinessB.his son is from his wife’s previous marriageA.they had a very bad taste for musicD.he believes he’s being punished as a father missing his son now D.he is sad and disappointed that my son does not show upB.he had to plan his own time for his life and studyD.quite similar socially to living back in chinaB.the number has increased about ten times compared with six years ago D.trying new learning and cultural experiencesA.whether chinese students are experiencing something new is questionable三单元C.he saved the lives of 699 mostly jewish children from the nizis B.through a BBC TV programB.the sufferings of children in warD.the governments will consider using money for warsD.she cannot keep up with the courseA.he tries to be helpful to herC.it wasn’t done as well as expectedD.talk to her professorB.he is open to ideas and picks the one that worksA.to hire a new managerC.untidyB.when he needs to do writingC.everyone should take exercise regularlyB.we think the quality of food is importantA.many of us are willing to pay more for health foodnguageD.they feel they are members of the same groupC.slang comes and goes after trial periodB.it was written by a little girl hiding away during the nizi occupation A.it was caused by the unreasonable opinion of some murderersC.they are like people he feel comfortable with in his lifeB.living every day with hopeB.believing in the goodness of human natureA.war has become more destructive with modern weaponsD.the targets of war have changed form soldiers only to civilian as well D.the sufferings of childrenA.the money was spent at the cost of education servicesC.it can affect the quality of life for many years and generation.四单元C.Progress in bringing a climate agreement into effect.B.To take actions for low carbon development.C.It has suffered the worst election losses.B.The opposition party used Mandela to win trust.A.Planning an overseas tripD.In July.B.Eating outD.Visiting rural Italy.B.To find a summer jobA.He checked some websites.C.It's a bit risky to work thereC.A ski schoolC.Foods that can help to improve health.D.It helps a child's brain developD.Most children had healthy iodine levels.C.His life experiences.B.He could get away from the war.A.He gave lectures around the country.C.we all can develop leadership skills like these peopleA.They share, listen and improve their ideas for a better society D.It makes a difference in achieving group goalsC.people need to work as a team for help and supportA.He should be able to motivate others for a common goal.B.he viewed this offer as special treatment for himD.Uncomfortable.C.a man who cares a lot about his appearanceB.he wanted to challenge the court as a black AfricanD.the supporters were in low spirits and felt hopeless五单元C.Water is linked to creating jobs and conditions of work.D.Unequal water resources.A.A study of Asia's water problems and their causes.D.Human and natural factors.C.His computer is not back as expectedB.a customer service representativeB.there is a delay in their serviceC.to have his computer returned soonA.his future planC.to live comfortably ang freelyD.they will have accent training and cultural learningA.he needs to go and study hardA.teaching to encourage active learningD.by working with and observing kidsB.Direct experience is what students truly needC.People do not experience local culture.D.It allows a free stay to travel around the world.C.He considers meeting friendly people the best part.C.people can do anything to water but destroy itB.drought caused the soil to turn to waves of dustD.the passage of the Clean Water ActB.there was a nationwide movement for water protection B.whether to increase supply or to use water responsiblyD.A drought is taking place as a heat wave hits the vast areas.A.Groundwater levels in northern India fell.D.They have supplied sand for construction projects.A.prioritize the country's water needs in his development plan 六单元C.They are hit by vehicles in streets in surging numberA.Putting up warning signsB.Too much social media use harms children's mental health.D.They can't tell online worlds from the real world.B.they have been working hard.C.to finish reviewingB.it is a new funny movieD.to study the last topic leftB.Friendly.A.By using socialD.For getting to know the other person.A.To be more understanding.A.Learning by playing games.D.It was not fun but painful.B.Goal-driven effort is needed for fun.C.He used natives cruelly for his business.A.A mapmaker used it in memory of an explorer.D.Leif Erikson.D.texting reduced course grade by half a letter on averageA.students using their cellphones could lose one pointC.it works for a short while before most students but not with others B.they had faster heartbeat when unable to answer the phoneA.students are allowed to check their phone every 15 or more minutes D.talking to people and improving social skillsB.Taking risks and having courage to communicateD.Having more time for what to say.A.It is highly personal and scary.C.teens will grow up not knowing how to talk in person。

儿童谜语大全及答案1、俊美无匹却为妖，贵气逼人毒华爪（打一动漫人物）——谜底：杀生丸2、灰溜溜，走到哪跟到哪（打一名词）——谜底：影子3、李大爷的鸽子在张阿婆家下了个蛋，这个蛋属谁的？——谜底：鸽子的4、模样像桶又像帽，花草泥巴来报道。

（打一物）——谜底：花盆5、青枝绿叶颗颗桃，外面骨头里面毛，待到一天桃子老，里面骨头外面毛。

（打一植物）——谜底：棉花6、小强最会撒谎，可为什么他的朋友都说他是诚实的孩子呢？——谜底：都被小强骗的7、脚穿一双特制鞋，尺码大得没了边，冰天雪地向前跑，速度快得像射箭（打一体育运动）——谜底：滑雪8、四四方方一间房，只见有人不见床，一会升来一会降，人来人往上下忙（打一建筑设施）——谜底：电梯9、超市里面最值钱的东西是什么？——谜底：收银机10、兄弟姐妹一般高，放到水里软了腰。

洁白光韧身材好，煮熟尝尝味道妙（打一食品）——谜底：挂面11、天旱（猜一字）——谜底：沙（少水）12、天上无二，合去一口，家家都有，猜一字——谜底：人13、憨憨一小老头，不会跑来不会走。

让他躺下睡，他就猛摇头。

（打一物）——谜底：不倒翁14、五个青铜美男一生围绕着智慧女神转（打一动画片）——谜底：《圣斗士星矢》15、圆圆小铁汉，肚里盛着电，不要随处仍，小心有污染（打一日用品）——谜底：电池16、人送绰号小叮当，微笑大嘴可爱样（打一卡通人物）——谜底：哆啦A梦17、千姊妹，万姊妹，同床睡，各盖被（打一水果）——谜底：石榴18、不能口头推荐淮阴侯探骊格——谜底：应用文·介绍信19、说它像蛇，它不像，头和尾巴都一样，人们用它来健身，跳来跳去乐欢喜——谜底：跳绳20、森林医生很忙碌，爱吃虫子爱敲木（打一动物）——谜底：啄木鸟21、灯笼里面藏棉花，棉花裹着小月牙。

剥开月牙见白豆，灯笼得用竹竿打。

（打一水果）——谜底：柚子22、不用挂蚊帐的王子（打一童话角色）——谜底：青蛙王子23、与其给我飞吻，何若让我依偎在你身旁。

中秋赏月猜灯谜集锦（附答案）中秋赏月猜灯谜集锦（附答案）范文一1、耳朵长，尾巴短。

只吃菜，不吃饭。

(打一动物名)答案：兔子2、粽子脸，梅花脚。

前面喊叫，后面舞刀。

(打一动物名)答案：狗3、小姑娘，夜纳凉。

带灯笼，闪闪亮。

(打一动物名)答案：萤火虫4、一支香，地里钻。

弯身走，不会断。

(打一动物名)答案：蚯蚓5、一样物，花花绿。

扑下台，跳上屋。

(打一动物名)答案：猫6、沟里走，沟里串。

背了针，忘了线。

(打一动物名)答案：刺猬7、肥腿子，尖鼻子。

穿裙子，背屋子。

(打一动物名)答案：鳖8、船板硬，船面高。

四把桨，慢慢摇。

(打一动物名)答案：乌龟9、一把刀，顺水漂。

有眼睛，没眉毛。

(打一动物名)答案：鱼10、一星星，一点点。

走大路，钻小洞。

(打一动物名)答案：蚂蚁11、脚儿小，腿儿高。

戴红帽，穿白袍。

(打一动物名)答案：丹顶鹤12、小小船，白布篷。

头也红，桨也红。

(打一动物名)答案：鹅13、长胳膊，猴儿脸。

大森林里玩得欢。

摘野果，捣鹊蛋，抓住树枝荡秋千。

(打一动物名)答案：长臂猿14、娘子娘子，身似盒子。

麒麟剪刀，八个钗子。

(打一动物名)答案：蟹15、进洞像龙，出洞像凤。

凤生百子，百子成龙。

(打一动物名)答案：蚕16、尖尖长嘴，细细小腿。

拖条大尾，疑神疑鬼。

(打一动物名)答案：狐狸17、为你打我，为我打你。

打到你皮开，打得我出血。

(打一动物名)答案：蚊子18、无脚也无手，身穿鸡皮皱。

谁若碰着它，吓得连忙走。

(打一动物名)答案：蛇19、背板过海，满腹文章。

从无偷窃行为，为何贼名远扬?(打一动物名)答案：乌贼20、日飞落树上，夜晚到庙堂。

不要看我小，有心肺肝肠。

(打一动物名)答案：麻雀21、说马不像马，路上没有它。

若用它做药，要到海中抓。

(打一动物名)答案：海马22、海上一只鸟，跟着船儿跑。

冲浪去抓鱼，不怕大风暴。

(打一动物名)答案：海鸥23、小时像逗号，在水中玩耍。

长大跳得高，是捉虫冠军。

(打一动物名)答案：青蛙24、白天一起玩，夜间一块眠。

练习题：1.单项选择⑴当砼预制桩的设计间距大于4倍桩直径（或边长）时，宜采用的打桩顺序为（ A）。

A．逐排打设Ｂ．自中间向四周打设Ｃ．自四周向中间打设Ｄ．逐排打设⑵摩擦桩型的预制桩在沉桩时，主要质量控制指标是（Ｂ）。

Ａ．最后贯入度Ｂ．设计标高Ｃ．垂直度Ｄ．平面位置⑶在周围建筑物密集的狭窄场地施工大直径砼灌注桩，较宜采用（Ａ）。

Ａ．钻孔灌注桩Ｂ．沉管灌注桩Ｃ．人工挖孔灌注桩Ｄ．爆扩灌注桩3．填空题：（1）泥浆护壁钻孔灌注桩成孔施工时，泥浆的作用是：（护壁、携砂、排土、降低钻头温度）。

（2）钢筋砼预制桩的打桩顺序一般有：（逐排打设）、（自中间向四周打设）、（有中间向两边打）。

（3）桩锤重量可按那几个因素来选择：（地质条件）、（工程结构）、（桩的类型）。

密集程度及施工条件（4）预制打入桩垂直度偏差应控制在（ 100mm ）以内。

（5）入土深度控制对摩擦桩应以（设计标高）为主，以（最后贯入度）作为参考。

端承桩应以（最后贯入度）为主。

（6）钻孔灌注桩钻孔时的泥浆循环工艺有（正循环、反循环）两种，其中（反循环）工艺的泥浆上流速度高，携土能力大。

（7）打入桩施工时，当桩间距（当桩中心距小于等于4倍桩长或桩径时）时，一定要确定合理的打桩顺序。

（2）若按施工方法分，预制桩可划分为（打入法）、（静压法）（8）预制桩吊点设计的原则是：（平稳，避免冲击和振动）。

（9）桩架的作用是（导向）、（固定桩的位置）、（承受桩锤重量）。

（10）预制桩接桩的方法有：（焊接法）、（浆锚法）、（法兰接桩）。

（11）打入桩施工时，宜采用的打桩方法：（重锤低击）。

（12）套管成孔灌注桩施工时，为提高桩的质量，提高桩的承载力，经常采用（复打法施工）。

（13）水下浇筑砼经常采用的方法是（导管法）。

（14）砼预制桩应在砼达到设计强度的（75%）后方可起吊，达到设计强度的100%后方可（运输）和（打设）。

（15）沉管灌注桩施工时，常遇问题有：（断桩）、（缩颈）、（吊脚桩）（砼过量）。