2019--2020学年度第二学期模拟卷 答案
2020年安徽省合肥市庐阳区中考英语二模试卷及答案(无听力部分)
合肥庐阳区2019-2020学年度第二学期九年级第二次模拟英语试题卷第一部分听力（略）第二部分英语知识运用(共两大题，满分40分)V.单项填空(共10小题；每小题1分，满分10分)从每小题所给的A.B.C.D四个选项中选出一个可以填入空白处的最佳选项。
21.--I want to get some change, but I can't find a bank here.--I know___________ next to the People's Hospital.A. itB. that.C. oneD. this22. I you are in trouble, Mike is always willing to___________ a hand.A. wantB. shakeC. waveD. lend23. If you're ________in the open air, the sun and stars can help you find your way.A . lonely B. lost C. sleepy D. thirsty24.--the teacher's _________is really good. He must be from an English-speaking country.--But he is from Russia in fact.A. pronunciationB. voiceC. backgroundD. memory25.--when will you hand in your report, Sarah?-- Sorry, I _________it. Tomorrow will be OK.A. don’t completeB. won't completeC. haven't completedD. didn't complete26.Jack is so crazy about football that he_________ misses a chance of playing it.A. alwaysB. usuallyC. oftenD. never27.The theater will close down _________more money can be raised to support it.A. soB. unlessC. sinceD. when28. We were lucky to meet Bryan in the hotel. He was just_______ and leaving for the airport.A. checking outB. calling backC. lying downD. dropping by29.--We are sure to win. They're already three points_________ us.--You can’t take it lightly .A. againstB. behindC. withD. for30. --how abut taking a taxi there? It's faster.--__________. It's rush hour now, so it may take longer.A. sounds greatB. Promise!C. Better notD. Take it easyVI.完形填空(共20小题；每小题1分，满分20分)阅读下列短文，从每小题所给的A、B、C、D四个选项中选出一个最佳选项。
江苏省扬州市2019—2020学年度第二学期高三历史阶段性检测(二)(含答案)
2019—2020学年度第二学期阶段性检测（二）高三历史注意事项考生在答题前请认真阅读本注意事项及各题答题要求1.本试卷包含选择题（第1题－第20题，共20题）、非选择题（第21题－第25题，共5题）两部分。
本次考试满分为120分，考试时间为100分钟。
考试结束后，请将答题纸交回。
2.答题前，请务必将自己的姓名、考试号等用书写黑色字迹的0.5毫米签字笔填写在答题纸上。
3.请认真核对答题纸表头规定填写或填涂的项目是否准确。
4.作答非选择题必须用书写黑色字迹的0.5毫米签字笔写在答题纸上的指定位置，在其它位置作答一律无效。
第Ⅰ卷（选择题共60分）一、选择题：本大题共20小题，每小题3分，共计60分。
在每小题列出的四个选项中，只有一项是最符合题目要求的。
1.《诗经·大雅》祭祀乐歌有谓：“文王在上，於昭于天。
周虽旧邦，其命维新。
……文王陟（升）降，在帝左右。
……文王孙子，本支百世。
凡周之士，不显亦世。
”对此理解有误的是A.早期政治中神权与王权结合B.按血缘关系来分配政治权力C.“家天下”的局面开始出现D.体现了现实主义的艺术风格2.右侧邮票是汉代画像石中的农事图。
此图可以用来说明当时A.土地公有制下的集体劳作B.精耕细作农业的不断发展C.男耕女织的生产劳作状态D.曲辕犁已经普及全国各地3.“夫其为物，厥美可珍。
廉方有则，体洁性贞。
含章蕴藻，实好斯文。
取彼之弊，以为此新。
”关于材料所赞叹的技术成果，说法正确的是A.有利于信息的记录与传播B.唐代经海路外传至阿拉伯C.直接推动了西欧思想解放D.两汉时使用已经十分普遍4.《续资治通鉴·宋宁宗嘉定十一年》记载：“（金）户部尚书瓜勒佳必喇为翰林学士承旨、权参知政事，行省于辽东。
”陆游在《纵笔》一诗中也写道：“行省当年驻陇头，腐儒随牒亦西游。
”有人据此认为行省制度开始于宋代。
下列说法最为合理的是A.年代久远导致行省制度确立时间莫衷一是B.只通过历史文献就可以准确还原历史真相C.以诗证史的方法可证明宋代确立行省制度D.元代的行省制存在对前代地方官制的继承5.下图是《货郎图》（局部），描绘了一位老货郎挑满玩具百货杂物的挑担抵达村头，众多妇女儿童争购围观的热闹场面，表现了南宋时钱塘一带的风土人情，具有浓厚的生活情趣。
2019-2020学年第二学期七年级英语期中模拟卷(含答案)
苏州市2019-2020学年第二学期七年级英语期中模拟卷（1）一、单项选择（每小题1分，满分10分）1. There is________ “r” in the word “zero”．A. aB. anC. theD. /2. —Don’t be late for class next time.—OK, I ________.A. don’ｔB. willC. won’ｔD. can’ｔ3. Chairman (主席) Xi asks us________ strict economy (厉行节约) in our daily life.A. to practiceB. practiceC. practicesD. practicing4. —Let’s have a trip to Hong Kong.—Sounds ________. It’s a good place for going shopping.A. wellB. niceC. nicelyD. bad5. —________ go shopping tomorrow? —Good idea!A. What aboutB. Why don’tC. How aboutD. Why not6. The students in our school plant over ________ trees every year.A. hundred ofB. hundreds ofC. five hundredD. five hundreds of7. This is Jim’s ________ time to China. He hopes he _______ China some day.A. the first, to visitB. first, to visitC. the first, can visitD. first, can visit--- Yes , _____ is. He teaches _____English.8. —Is your best friend’s name Tom?A. it, myB. he, myC. he, meD. it, me9. ______ mother usually cooks for ______ at the weekend.A. Lily and Nick; theirB. Lily's and Nick's; themC. Lily and Nick's; theirD. Lily and Nick's; them--- I think it ___________ soon.10. --- Look at the sky. It’s cloudy.A. is going to rainB. rainedC. will rainD. rains二、完型填空（每小题1分，满分10分）The teachers are worried that young children are becoming "addicted(沉溺)" to tablets(平板电脑). They can't make easy things 1 hands as they use computers. They can't make toys themselves or help 2 dinner with mum."Many children can play with tablets or phones 3 they can't make things. Many children can't talk with other children but 4 parents are proud of(以……自豪)them because they are good at using a tablet or a 5 ，"said Colin Kinney, a teacher.Many children spend too much time 6 at home and quietly play on a tablet. If children do not learn to stay with others, it can become 7 for them to learn how to make friends when they get together.It is important to know 8 to use tablets or telephones in today's world, but it is still very important for children to learn to make 9 with others. If they do, they can live 10 when they grow up. Teachers should help their students know how to live happily.1. A .with B .before C .after D .under2. A .take B .eat C .cook D .try3. A .and B .but C .or D .so4. A .they B .their C .them D .theirs5. A .phone B .book C .pen D .radio6. A .playing B .staying C .working D .studying7. A .easy B .happy C .difficult D .small8. A .what B .when C .where D .how9. A .boys B .girls C .teachers D .friends10. A .angrily B .luckily C .happily D .sadly三、阅读理解（每小题2分，满分24分）ATeacher NeededThe English Study Centre needs an English teacher. You must:▲be good at English▲be good with children▲be a woman over the age of 26▲work from 9:00 a.m. to 4:30 p.m. on weekendsCall Mrs. Jin at 3042-5509 for more information.Babysitter WantedWe have two daughters. We need a babysitter. The pay is $10 per hour. You must:▲look after them▲read for them▲play with them▲do some housework in our house▲work from 9:00 a.m. to 4:00 p.m. on weekdaysPlease call Mrs. Smith at 9064-2573 or 9203-3675.Cook WantedOur restaurant serves noodles, dumplings, rice and different kinds of dishes.We need three cooks. You must:▲be a man over the age of 30▲have over three years’cooking experience(经验)▲work from 9:00 a.m. to 10:00 p.m. (six days a week)For more information, call 3762-7035 or come to our restaurant at 23, CentreStreet.1. Wilson is an English teacher in the English Study Centre. He has to work at ______.A. 9:00 a.m. on MondayB. 2:00 p.m. on WednesdayC. 8:30 a.m. on SaturdayD. 3:00 p.m. on Sunday2. The babysitter can get ______ a day.A. $70B. $140C. $350D. $4903. From the third table, we can’t know ______.A. what the restaurant servesB. the work time of the cooksC. how much a cook can getD. the address of the restaurantBThe wolves(狼) are very hungry. They go out to look for food. There are many sheep(绵羊)near the hill. There are also a few sheepdogs with them. The wolves think of an idea. They speakto the sheepdogs, “You are like us and we are brothers. But we have a very different life. We dowhat we like, and you must work for men. They make you look after their sheep. They eat meatand give you the bones(骨头). If you listen to us and give us the sheep, we can eat them together.All of us will be happy, right?”The dogs are happy and do like this. The wolves ask the dogs togo to their house. The sheepdogs go to the wolves’ home. But the wolves eat them and then eat the sheep.4. The wolves go out for food because ________.A. they see the sheep near the mountainB. they see the sheepdogsC. they are hungryD. they want to go out5. The sheepdogs work for ________.A. menB. sheepC. wolvesD. dogs6. Why do the wolves ask the sheepdogs to go to their home?A. Because they want to eat them.B. Because they want to be sheepdogs’ friends.C. Because they want to help sheepdogs to get freedom(自由).D. Because their home is near this mountain7. What do the sheepdogs do?A. Play with the sheep.B. Look after the sheep.C. Work with men.D. Eat the bones.CNick is a l0-year-old boy. He is the only son of his parents. Nick’s father is very busy every day. He comes home after Nick sleeps, and goes to office before Nick wakes up in the morning. Hewants to make much money and give his son a better life. But Nick wants to go outdoors and playwith his father just like his friends do.One day, Nick was surprised to see his father at home in the evening. “Dad, can I ask you aquestion?”Nick said. “Yes, dear,”said the man. “Dad, can you tell me how much youearn(挣)in an hour?”Nick asked. Nick's father answered, “It is about $ 25 an hour.”Nick ranto his room, and came out with some money. He said, “Dad, I have $50. Can you spare (抽出)twohours for me? I want to go to the beach and have dinner with you tomorrow evening.”Nick’sfather was speechless!8. From the first paragraph we can know________________.A Nick can see his father all the time.B. Nick can’t see his father every dayC. Nick often plays with his father.D Nick can only eat meals with his father.9. Why did Nick ask his father how much he earned in an hour?A. Because Nick liked to ask questions all the time.B. Because Nick wanted to buy something expensive.C. Because Nick hoped his family could have a happy life.D. Because Nick wanted to buy some of his father's time.10. The underlined word speechless in the last paragraph means ________________in Chinese.A. 滔滔不绝的B. 无言以对的C. 合理布局的D. 立竿见影的11. Which of the following about Ni ck is true?A. Nick doesn't like his father at all.B. Nick hoped to play with his father.C. Nick borrowed $50 from his mother.D. Nick wanted to go to his father's workplace.12. The passage mainly tells us________________.A. money can buy everything in lifeB. children don't want to stay with parentsC. the greatest gift a parent can give his child is timeD. children in a family need to work with their father.四、句型转换(共5小题；每空0.5分，满分5分)1. My parents are kind and helpful. (对划线部分提问)________ _______ your parents ________?2. I will wait for you. (改为否定句)I ________ ________ for you.3. My sister and I live in the same bedroom. (改为同义句)My sister ______ a bedroom ______ me.4. It’s nice weather. (改为感叹句)________ ________ the weather is!5. If I don’t catch the early bus, I’ll have to wait half an hour for the next one. (改为同义句)If I ______ ______ the early bus, I’ll have to wait half an hour for the next one.五、词汇检测（每小题1分，满分15分）A) 根据下列句子所给的汉语注释及句意，写出空缺处各单词的正确形式。
2020届高三第二学期英语模拟卷(含答案)
2020届高三第二学期英语模拟试卷第一部分听力(满分30)1.What is the cause of the woman’s quietness?A. The violent film.B. Her tiredness.C. The crowded theater.2.How does the man know about animals?A. From books.B. On TVC. Through the Internet.3.What does the man ask the woman to do?A. Give her ID card to him.B. Move a table.C. Sign for a parcel.4.Why doesn’t the man want to eat?A.He’s feeling a little sick.B.He doesn’t like the food.C. He ate something just now.5.What are the speakers mainly talking about?A. A picnic.B. The weather.C. A forecast.听第 6 段材料，回答第6、7 题。
6.Why doesn’t the man want the telephone sales job?A.It needs working long hours.B.It is not suitable for him.C.It doesn’t pay well.7.What does the man think of the job on the ship?A. Attractive.B. Boring.C. Tiring.听第7 段材料，回答第8、9 题。
8.What does the woman advise the man to focus on?A. The price.B. The quality.C. The model.9.What will the speakers do next?A. Continue to shop.B. Visit a gym.C. Go to the cashier.听第8 段材料，回答第10 至12 题。
2020年广东省中考模拟试卷·2019-2020学年度第二学期佛山市大沥镇初中教学质量检测九年级数学试题(含答案)
2019-2020学年度第二学期大沥镇初中教学质量检测九 年 级 数 学 试 题命题学校：石门实验学校 命题人：农成遐 审核人：李富泉 把关人：大沥镇教育局左世良一．选择题（共10小题，每小题3分，共30分） 1．﹣2020的相反数是（ ） A ．B ．C ．2020D ．﹣20202．港珠澳大桥2018年10月24日上午9时正式通车，这座大桥跨越伶仃洋，东接香港，西接广东珠海和澳门，总长约55000m ，集桥、岛、隧于一体，是世界最长的跨海大桥，数据55000用科学记数法表示为（ ） A ．5.5×105B ．55×104C ．5.5×104D ．5.5×1063．如图，下列结论正确的是（ ）A ．c ＞a ＞bB ．C ．|a |＜|b |D ．abc ＞04．如表是我国近六年“两会”会期（单位：天）的统计结果：则我国近六年“两会”会期（天）的众数和中位数分别是（ ） A ．13，11 B ．13，13 C ．13，14 D ．14，13.5 5．在Rt △ABC ，∠C ＝90°，sin B ＝，则sin A 的值是（ ） A ． B ． C ． D ． 6．下列运算中，计算正确的是（ ） A ．2a +3a ＝5a 2 B ．（3a 2）3＝27a 6C ．x 6÷x 2＝x 3D ．（a +b ）2＝a 2+b 27.下列命题中，假命题的是（）A ．分别有一个角是110的两个等腰三角形相似B ．若5x =8y （xy ≠0），则58y xC ．如果两个三角形相似，则他们的面积比等于相似比D ．有一个角相等的两个菱形相似 8．甲、乙两位同学做中国结，已知甲每小时比乙少做6个，甲做30个所用的时间与乙做45个所用的时间相等，求甲每小时做中国结的个数．如果设甲每小时做x 个，那么可列方程为（ ） A ．＝B ．＝C ．＝D ．＝9．如图，点A 是反比例函数y ＝2x(x ＞0）的图象上任意一点，AB //x 轴，交反比例函数y ＝－3x的图象于点B ，以AB 为边作□ABCD ，其中C 、D在x 轴上，则S □ABCD 为( )A. 2B. 3C. 4D. 510．二次函数y ＝ax 2+bx +c （a ≠0）的图象如图所示，下列结论： ①abc ＞0；②2a +b ＝0；③若m ≠1，则a +b ＞am 2+bm ；④a ﹣b +c ＞0；⑤若ax 12+bx 1＝ax 22+bx 2，且x 1≠x 2，则x 1+x 2＝2． 其中正确的有（ ）A ．2个B ．3个C ．4个． D.5个二．填空题（共7小题，每小题4分，共28分） 11．因式分解：x 2﹣9＝ ．12．在平面直角坐标系中点P （﹣2，3）关于x 轴的对称点在第 象限． 13．一个正数a 的平方根分别是2m ﹣1和﹣3m +，则这个正数a 为 ．14．已知反比例函数y ＝（k 是常数，k ≠1）的图象有一支在第二象限，那么k 的取值范围是15．在一个不透明的布袋中装有4个白球和n 个黄球，它们除颜色不同外，其余均相同，若从中随机摸出一个球，摸到白球的概率是，则n ＝ ．16．如下左图，DE ∥BC ，DF ∥AC ，AD =4cm ，BD =8cm ，DE =5cm ，则线段BF 长为 cm ．17. 如上右图，点P 是矩形ABCD 的对角线AC 上一点，过点P 作EF ∥BC ，分别交AB ，CD 于E 、F ，连接PB 、PD ．若AE=2，PF=8．则图中阴影部分的面积为 .三．解答题(一)（第18~20题，每题6分，共18分）18．计算：2sin30°﹣（π﹣）0+|﹣1|+（）﹣119．先化简，再求值（﹣）÷，其中a，b满足a+b ﹣＝0．20．如图，在△ABC中，∠ABC＝90°．（1）作∠ACB的平分线交AB边于点O，再以点O为圆心，OB的长为半径作⊙O；（要求：不写作法，保留作图痕迹）（2）判断（1）中AC与⊙O的位置关系，直接写出结果．四．解答题(二)（第21~23题，每题8分，共24分）21．如图，在△ABC中，过点C作CD∥AB，E是AC的中点，连接DE并延长，交AB于点F，交CB的延长线于点G，连接AD，CF．（1）求证：四边形AFCD是平行四边形．（2）若GB＝3，BC＝6，BF ＝，求AB的长．22．2020年4月23日是第二十五个“世界读书日”．某校组织读书征文比赛活动，评选出一、二、三等奖若干名，并将获奖人数绘成如图所示的条形统计图和扇形统计图（不完整），请你根据图中信息解答下列问题：（1）求本次比赛获奖的总人数，并补全条形统计图；（2）求扇形统计图中“二等奖”所对应扇形的圆心角度数；（3）学校从甲、乙、丙、丁4位一等奖获得者中随机抽取2人参加“世界读书日”宣传活动，请用列表法或画树状图的方法，求出恰好抽到甲和乙的概率．23．在水果销售旺季，某水果店购进一批优质水果，进价为20元/千克，售价不低于20元/千克，且不超过32元/千克，根据销售情况，发现该水果一天的销售量y（千克）与该天的售价x（元/千克）满足如下表所示的一次函数关系．（1）某天这种水果的售价为23.5元/千克，求当天该水果的销售量.（2）如果某天销售这种水果获利150元，那么该天水果的售价为多少元？五．解答题(三)（第24~25题，每题10分，共20分）24.如图1，已知AB是⊙O的直径，AC是⊙O的弦，过O点作OF⊥AB 交于点D，交AC于点E，交BC的延长线于点F，点G是EF的中点，连接CG(1)判断CG 与的位置关系，并说明理由；(2)求证：2OB2=BC·BF；(3)如图2，当∠DCE=2∠F,CE=3,DG=2时，求DE的长．25．如图，直线23y x c=-+与x轴交于点A(3,0)，与y轴交于点B，抛物线243y x bx c=-++经过点A，B．(1)求点B的坐标和抛物线的解析式；(2)M(m,0)为x轴上一动点，过点M且垂直于x轴的直线与直线AB及抛物线分别交于点P，N．①点M在线段OA上运动，若以B，P，N为顶点的三角形与△APM相似，求点M的坐标；②点M在x轴上自由运动，若三个点M，P，N中恰有一点是其它两点所连线段的中点(三点重合除外)，则称M，P，N三点为“共谐点”.请直接写出使得M，P，N三点成为“共谐点”的m 的值．2019－2020学年度第二学期大沥镇初中教学质量检测九年级数学答案及评分标准一．选择题（共10小题，每小题3分，满分30分）1.C ．2.C.3.B4.B5.B6.B7.C8.A9.D10.B二．填空题（共7小题，每小题4分，满分28分）11．（x +3）（x ﹣3）．12．第三象限．13．414．k ＜1．15．8．16．10．17.16三．解答题(一)（第18~20题，每题6分，共18分）18．解：原式＝2×﹣1+﹣1+2.............4分＝1+．......................6分19．解：原式＝•.............3分＝， (4)分由a +b ﹣＝0，得到a +b ＝，则原式＝2．..........6分20．解：（1）如图所示：CO 与⊙O 为所求....................4分（2）相切；过O 点作OD ⊥AC 于D 点，∵CO 平分∠ACB ，∴OB ＝OD ，即d ＝r ，∴⊙O 与直线AC 相切.......................6分四．解答题(二)（第21~23题，每题8分，共24分）21．解：（1）∵E 是AC 的中点，∴AE ＝CE ，∵AB ∥CD ，∴∠AFE ＝∠CDE ，................1分在△AEF 和△CED 中，.6分∵，∴△AEF ≌△CED （AAS ），∴AF ＝CD ，........3分又AB ∥CD ，即AF ∥CD ，∴四边形AFCD 是平行四边形；........4分（2）∵AB ∥CD ，∴△GBF ∽△GCD ，...............5分∴＝，即＝，解得：CD ＝，...............6分∵四边形AFCD 是平行四边形，∴AF ＝CD ＝，...................7分.∴AB＝AF+BF＝+＝6．...............8分22．解：（1）本次比赛获奖的总人数为4÷10%＝40（人），二等奖人数为40﹣（4+24）＝12（人）..................2分.补全条形图如下：............3分.（2）扇形统计图中“二等奖”所对应扇形的圆心角度数为360°×＝108°；...............4分（3）树状图如图所示，∵从四人中随机抽到甲和乙两人共有12种可能性结果，每种结果的可能性相同，恰好是甲和乙的结果有两种，分别是（甲，乙），（乙，甲）..............7分∴抽取两人恰好是甲和乙的概率是＝．.......................................................8分23．解：（1）设y与x之间的函数关系式为y＝kx+b，..........................1分.将（22.6，34.8）、（24，32）代入y＝kx+b，，解得：，∴y＝﹣2x+80．......................................................................3分当x=29.6,y=25.2和x=28,y=26也满足上述关系式∴y与x之间的函数关系式为y＝﹣2x+80．................................4分当x＝23.5时，y＝﹣2x+80＝33．..答：当天该水果的销售量为33千克．...............................5分（2）根据题意得：（x﹣20）（﹣2x+80）＝150，...............................6分解得：x1＝35，x2＝25．∵20≤x≤32，∴x＝25．..............................7分答：如果某天销售这种水果获利150元，那么该天水果的售价为25元．...............................8分五．解答题(三)（第24~25题，每题10分，共20分）24．解：(1）CG与⊙O相切，理由如下：..........1分如图1，连接OC，∵AB是⊙O的直径，∠ACB=∠ACF=90°点G是EF的中点，∴GF=GC=GE∴∠AEO=∠GEC=∠GCE.............................2分∵OF⊥AB ∴∠OAC+∠AEO=90°∴∠OCA+∠GCE=90°∴OC⊥CG∵OC 是⊙O 的半径∴CG 是⊙O 相切...............................3分（2）∵∠AOE=∠FCE=90°,∠AEO=∠FEC ∴∠OAE=∠F 又∵∠B=∠B，∴△ABC∽△FBO .............................4分∴BC:BO=AB:BF 即OB·AB=BC·BF ..............................5分∵AB=2OB∴2OB 2=BC·BF ..................6分(3)由（1）知GC=GE=GF ∴∠F=∠GCF∴∠EGC=2∠F...........................7分∵∠DCE=2∠F ∴∠EGC=∠DCE ∵∠DEC=∠CEG ∴△ECD∽△EGC ...............................8分∴EC:EG=ED:EC ∵EC=3,DG=2∴3:(DE+2)=DE:3整理，得：DE 2+2DE-9=0....................................................9分010 1.............10DE DE >∴=- 分2(3,0)3y x c x A =-+25.（1）与轴交于∴0=-2+c,解得：c=2∴B(0,2)..............................1分24+,3y x bx c A B =-+ 抛物线经过（3,0）（0,2）两点-12+3010,223b c b c c +=⎧∴∴==⎨=⎩24102 (333)y x x ∴=-++抛物线的解析式为：分()()22123y x =-+由可知直线AB的解析式为，∵M(m,0)为x 轴上一动点，过点M 且垂直于x 轴的直线与直线AB 及抛物线分别交于点P ，N ，2410333P ∴2（m,-m+2）,N(m,-m +m+2)222410242,3,2(2)4 (433333)PM m AM m PN m m m m m ∴=-+=-=-++--+=-+分24103332M(m,0),（m,-m+2）,N(m,-m +m+2)∴∠BNP=∠AMP=90°或∠NBP=∠AMP=90°当∠BNP=90°时，BN⊥MN,N 点的纵坐标为241033∴2-m +m+2=2解得：m=0或m=2.5M(2.5,0).....................................................................5分当∠NBP=90°时，过点N 作NC⊥y 轴于点C,241090, ,33NBC BNC NC m BC m m∠+∠=︒==-+则∵∠NBP=90°,∴∠NBC+∠ABO=90°∴∠ABO=∠BNC ∴Rt△NCB∽Rt△BOA∴NC:OB=BC:OA2410:2():333110811(,0) (68)m m m m m M ∴=-+==∴解得：或分综上可知当以B ，P ，N 为顶点的三角形与△AMP 相似时，点M 的坐标为或；②M ，P ，N 三点为“共谐点”，有P 为线段MN 的中点、M 为线段PN 的中点或N 为线段PM 的中点，2241012,3()3332P MN m m m m ++==当为线段的中点时，则有2(-m+2)=-解得：三点重合，舍去或224102)0,3()1333M PN m m m ++===-当为线段的中点时，则有-m+2+(-解得：舍去或2241012),3()3334N PM m m m ++==-当为线段的中点时，则有-m+2=2(-解得：舍去或11“” (1024)M P N m 综上可知当，，三点成为共谐点时的值为或-1或-．分。
2019-2020学年上海市黄浦区九年级第二学期(二模)考试化学试卷(含答案)
黄浦区2019学年度第二学期九年级学业水平阶段性调研理化试卷(满分150分，考试时间100分钟)化学部分(满分60分)考生注意:1.本试卷化学部分含三个大题。
2.答题时，考生务必按答题要求在答题纸规定的位置上作答，在草稿纸、本试卷上答题一律无效。
相对原子质量: H-1 C-12O-16 C1-35.5 Ca-40六、选择题(共20分)下列各题均只有一个正确选项，请将正确选项的代号用2B铅笔填涂在答题纸的相应位置上，更改答案时，用橡皮擦去，重新填涂。
27.属于稀有气体的单质是A.氦气B.氢气C.氮气D.氧气28.物质化学式书写正确的是A.氧化铁: FeOB.氯气: ClC.氧化钾: K2OD.氯化铵: NH3Cl29. 难溶于水的物质是A. Mg(OH)2B.KClC. H2SO4D. NaNO330.保持氧气化学性质的最小微粒是A. OB. O2C. O3D. CO231.蔗糖在水中溶解的现象，从微粒性质解释正确的是A.分子在不断地运动着B.分子本身发生了改变C.分子质量发生了改变D.分子中的原子发生了变化32.用表示不同种元素的原子，表示化合物的微观模拟图是A.B.C.D.33.物质在化学变化中表现出的性质是A.酸性B.延展性C.导电性D.溶解性34.关于氢氧化钠说法错误的是A.俗称:苛性钠B.物理性质:易溶于水C.焰色反应:呈紫色D.主要用途:制造化工产品35. 不属于同素异形体的一组物质是 A.红磷、白磷 B.氧气、臭氧 C.一氧化碳、二氧化碳 D.金刚石、石墨 36.属于氮肥的是 A.氧化钙 B.草木灰 C.硝酸铵 D.氯化钾37. 有机物的组成中一定含有的元素是 A.O B. N C.H D. C38.不能证明水的组成的实验是 A.电解水 B.氢气燃烧 C.盐酸与石灰水反应 D.氢气还原氧化铜39.实验室用氯酸钾制氧气，化学方程式书写正确的是 A. 222MnO KC1O O KCI ∆↑+B. 3222KCIO MnO 3O +2KCIC. 232MnO KCI I 3O O KC ↑+∆D. 232MnO 2KCIO 3O 2KCI ↑+∆40. 固体或液体药品加入试管，操作正确的是A.B.C.D.41. AI 、Fe 、Cu 三种金属大规模开发和利用时间顺序如表所示。
江苏省淮安市前进中学2019-2020学年七年级英语第二学期期末质量检测模拟卷(电子档含答案)
2019-2020学年七年级英语第二学期期末质量检测模拟卷淮安市前进中学一、单项选择（每小题1分，满分10分）1. These two bicycles are the _______ . They are ________ .A. twins'; Lucy's and Lily'sB. twin's; Lucy's and Lily'sC. twins; Lucy and Lily'sD. twins'; Lucy and Lily's2.一I found Tom sleeping at his desk，so I put my coat _______ him.－It's really kind of you to do that.A. outB. overC. aboveD. across3.It's not a good idea to _______ your bad feelings. Please share them with others.A. holdB. catchC. hideD. take4.－_______ the way, did you see Mrs. Lee ______ your way here?－Yes. She was waiting for a bus.A. On; byB. By; inC. In; onD. By; on5. I _______ make a home page three years ago, but now I am good at it.A. canB. can'tC. couldD. couldn't6.－Did you have a good time in the zoo? －No, there were _______ people there.A. too muchB. too manyC. a littleD. a lot7. My pet never worries because we _______ her well.A. look afterB. look outC. look forD. look at8.－Who lives together with your grandmother? －_______ .She lives alone. I often go to see her.A. NobodyB. SomebodyC. AnybodyD. Everybody9.－Look! _______ exciting news report!－Yes. Our school came first in the basketball match.A. What aB. What anC. How aD. How10.－Who can read the number 20,108 in English?－Let me try. That's _______.A. twenty thousands, one hundred, eightB. twenty thousand, one hundred, eightC. twenty thousands, one hundred and eightD. twenty thousand, one hundred and eight二、完型（每小题1分，满分10分）Justin was getting excited because his class was taking a field trip to the firehouse（消防队）. Justin loved to look at the fire trucks（卡车）and 1 ring the bell. His uncle Frank was one of the firemen there.The next day, they 2 by looking at the huge fire trucks, Uncle Frank told the class how to get water. “Being a fireman is a（n） 3 job,”said Uncle Frank. “You need to be healthy and get lots of rest.”The kids got to 4 some fire hats and climbed on the truck.After looking at all the trucks, the class 5 inside, and Uncle Frank showed them the alarm （警报）. Just then, it rang! All the men ran to get ready to leave for the fire. The class 6 as the men hurried out to the fire trucks and left the station with the sirens（警报器）7 .That night Justin told his mum and dad about the great 8 to the firehouse. Justin said, “I think I'm going to be a fireman when I get older.” Uncle Frank said it was a difficult job, 9 it was a job Justin would like to try. He said, “you need to be healthy and get lots of rest.” Mum said,“Then I guess you need to eat your carrots and go to bed early tonight.” Justin 10 , “so did Dad.” “I like carrots,” said Justin. That night Justin did go to bed early and dreamed of being a fireman!1. A. even B. still C. just D. again2. A. made B. began C. enjoyed D. had3. A. good B. hard C. easy D. interesting4. A. pick up B. put away C. try on D. look for5. A. returned B. went C. noticed D. checked6. A. saw B. found C. waited D. watched7. A. over B. in C. on D. behind8. A. trip B. try C. test D. exercise9. A. and B. so C. or D. but10. A. worried B. answers C. finished D. smiled三、阅读理解（每小题2分，满分20分）ASaturday, March 24th We have arrived(到达)in the hot, wet city of Bangkok(曼谷).This is our first trip to Thailand (泰国).We are going to eat something delicious(美味的)for dinner tonight. The hotel we are staying in is cheap, and very clean. We plan to stay here for a few days, visit some places in the city, and then travel to Chiang Mai(清迈)in the North.Tuesday, March 27th Bangkok is wonderful! The places are interesting. We visited the famous market which was on water, and saw a lot of fruits and vegetables. Everything is so colorful, and we have taken hundreds of photos already! Later today we will leave for Chiang Mai. We will take the train north, stay in Chiang Mai for two days.Friday, March 30th Our trip to Chiang Mai was long. We visited a small village in the mountains. The village people here love the quiet life― no computers or phones. They are the kindest people I have ever met. They always smile and say "hello". Kathy and I can only speak a few words of Thai, so smiling is the best way to show our kindness. We feel good here and hope to be able to come back next year.1. The weather in Bangkok is _______ .A. hot and rainyB. hot and dryC. cool and rainyD. cool and dry2. It seems that visitors _______ in Bangkok.A. often feel hungryB. can always find cheap thingsC. can't take any photos ,D. can enjoy themselves3. Which is the best way to show your kindness in Thailand if you can’t speak words of Thai?A. smilingB. laughingC. shaking handsD. kissing4. The writer has stayed in Thailand for _______ days in all.A.3B. 7C. 15D. 305. What is the best title of this article?A. My First TripB. The Outside WorldC. Traveling in ThailandD. Showing KindnessBA 12-year-old boy named Tim Brown got lost in the mountains. However，he survived at last thanks to his amazing survival(生存，幸存)skills.One day in October, 2016，Tim went hiking with his group in the Magaliesberg Mountains，South Africa. At first，everything went well. But at about one o'clock in the afternoon, he lost his way and couldn't find any other people. He got scared at first，but then he tried to calm down. He knew what to do in such a situation. "I should follow the river, follow the light，follow the sun and finally there will be buildings，roads and people and I could call home, "he told himself.Tim kept walking. Suddenly he heard some sounds and ran towards them. But to his surprise, he saw some baboons(狒狒). Unluckily(不幸的是)，one baboon scratched his arm. He found some water to wash the blood off the scratches and continued to walk. Tim just wore a pair of swimming trunks(游泳裤)，so he felt very cold. He tried to keep warm by covering his body with leaves. About 22 hours later, he finally met a farmer and was able to call his mom.After he came back，his mom asked why he carried on walking when it got dark. The little boy said if he did that，he would see her again. Nothing could beat his love for his mom!6. What’s the meaning of the underline word”scratched”?A. 抓伤B. 亲吻C. 抱住D. 舔了7.Where did Tim get lost?A. In a zoo.B. In the swimming pool.C. In a building.D. In the mountains.8.When he found he was lost，Tim felt scared at first and then .A. he cried over and over againB. he shouted for helpC. he stayed and waitedD. he tried to calm down9.What did Tim do first when he heard some sounds?A. He saw some baboons.B. He scratched a baboon.C. He ran towards the sounds.D. He washed the blood off.10.Which is NOT the reason for Tim's survival?A. He met a farmer.B. He was too scared to carry on walking.C. The love for his mom encouraged him.D. His abilities to solve problems helped him.四、词汇检测（满分20分）A) 根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。
人教版2019-2020学年度第二学期期末教学质量评估四年级英语试卷及答案(含两套题)
2019－2020学年度第二学期期末教学质量评估四年级英语试卷测试时间: 60分钟总分: 100分题号I II III IV V VI VII VIII IX X XI XII XIII 总分得分Listening Part 听力部分（50分）I Listen and choose. 听录音，选择你所听到的内容。
（10×1’=10’）( ) 1. A. skirt B. shit C. shorts( ) 2. A. this B. them C. these( ) 3. A. full B. fool C. for( ) 4. A. too B. tool C. toy( ) 5. A. col B. could C. cry( ) 6. A. ball B. do C. be( ) 7. A. dad B. bed C. bad( ) 8. A. 7: 30 B. 7: 13 C. 8: 30( ) 9. A. Hang up your dress. B. Put away your pants. C. Take off your pants. ( ) 10. A. Are these turkeys? B. Are these tomatoes? C. Are those tomatoes? II Listen and number. 听录音，用数字1-5给图片排序。
（5×2’=10’）( ) ( ) ( ) ( ) ( )III Listen and judge. 听录音，判断下列国片与你所听到的内容是（√）否（×）相符。
（5×2’=10’）( ) ( ) ( ) ( ) ( )IV Listen and chose. 听录音，给你听到的问句选择恰当的答语。
（5×2’=10）( ) 1. A. It’s on the teacher’s desk.B. It’s on the first floor.C. It’s in the teachers’ office.( ) 2. A. It’s cloudy. B. I like the weather.C. This is the world weather report.( ) 3. A. It’s red. B. It’s mine. C. It’s pretty.( ) 4. A. No, these are. B. No, they aren’t. C. No, it isn’t. ( ) 5. A. They’re green. B. They’re yummy. C. They’re 50 dollars. V Listen to the passage and judge. 听短文，根据短文内容判断下列句子的正（√）误（×）。
人教版2019-2020学年度第二学期期末教学质量评估五年级英语试卷及答案(含两套题)
2019－2020学年度第二学期期末教学质量评估五年级英语试卷测试时间: 60分钟总分: 100分题号听力部分笔试部分书写扣分总分一二三一二三四五六七得分亲爱的同学，此刻的你已踏上为期两天的考试之旅，这是你挥洒自信的天地，这是你实现梦想的舞台，希望你沉着冷静，细心答题，让智慧在笔尖流淌，用细心为成功奠基。
祝你成功！听力部分（30分）一、听录音，选择你听到的选项，将其序号填在题前的括号里。
每小题读两遍。
（10分）( ) 1. A. June B. January C. February( ) 2. A. jumping B. running C. swimming( ) 3. A. often B. sometimes C. usually( ) 4. A. drawing pictures B. taking pictures C. watching insects ( ) 5. A. write a letter B. write an e-mail C. write a report二、听录音，根据录音内容将下列图片排序，将序号填在图片下面的括号里。
每小题读两遍。
（10分）( ) ( ) ( ) ( ) ( )三、听录音，选出你所听内容的正确答语。
每小题读两遍。
（10分）( ) 1. A. It’s sunny and hot. B. I like summer best. C. I can swim in summer. ( ) 2. A. It’s October 1st. B. It’s Thursday. C. It’s in June.( ) 3. A. I’m doing the dishes. B. He’s cleaning the room.C. She’s washing the clothes.( ) 4. A. I often play sports. B. It’s 5:00. C. At 4:30 p.m. ( ) 5. A. Yes, it is. B. Yes, they are. C. No, we aren’t.笔试部分（70分）一、读一读，选出每组单词中的画线部分的读音不相同一项。
新人教版2019-2020年度八年级第二学期期中考试物理试题(II)卷(模拟)
新人教版2019-2020年度八年级第二学期期中考试物理试题（II）卷姓名:________ 班级:________ 成绩:________一、单选题1 . 下列几个验证性小实验,错误的是A．把钢笔帽放在静止的木块上,突然拉动木块,笔帽倾倒说明木块惯性B．把两个皮碗压紧在一起很难分开,说明大气有压强C．将压强计的探头在水中转动一周,U型管液面始终有高度差,说明液体向各个方向都有压强D．用橡皮泥捏成各种小动物,说明力可以改变物体形状2 . 放在水平桌面上的茶杯对桌面有压力的作用。
下列有关的说法中，正确的是（）A．茶杯对桌面的压力不属于弹力B．桌面对茶杯没有作用力C．茶杯和桌面间有相互作用的弹力，但两者均未发生形变D．茶杯对桌面的压力是由于茶杯发生形变而产生的3 . 小红用甲、乙两个物体，做“探究质量与体积关系”的实验，根据测得的数据画出它们质量与体积的关系图像如图所示．两种物质的密度之比ρ甲∶ρ乙为A．1∶2B．2∶1C．4∶1D．8∶14 . 将一瓶煤油倒掉一半，则剩下的一半（）A．热值、比热容和密度都不变B．密度不变，热值和比热容变为原来的一半C．热值、质量和比热容都不变D．热值不变，质量和比热容变为原来的一半5 . 一杯酒精用掉一半，剩下一半的酒精的质量、密度、比热容和热值的情况是A．质量、密度、比热容和热值不变B．质量和密度变为原来的一半，比热容和热值不变C．质量变为原来的一半，密度、比热容和热值不变D．质量热值变为原来的一半，密度和比热容不变6 . 公共汽车上的一些设施和做法与物理原理相对应，其中正确的一组是（）A．转弯时播放“汽车转弯，请抓好扶手”﹣﹣防止由于惯性对人体造成伤害B．方向盘上裹着的皮套﹣﹣用来减小摩擦C．冬天，在结冰的马路上撒一些细沙﹣﹣用来减小摩擦D．公交车紧急刹车一﹣采用了增大接触面粗糙程度来增大摩擦7 . (2017巴蜀二模)下列说法正确的是（）A．固体很难被拉长，是由于分子运动造成的B．炎热的夏天，在地面洒水降温是利用了液化吸热C．一杯冰水混合物温度没有改变则其内能一定没变D．打开醋瓶的瓶盖后，屋里弥漫着醋味，这说明醋分子不停地运动8 . 电视机的荧光屏上经常有许多灰尘，这主要是因为A．灰尘的自然堆积B．荧光屏有较强的吸附灰尘的能力C．电视机工作时，屏表面温度较高，吸附灰尘D．电视机工作时，屏表面有静电吸附灰尘9 . 2019年国际乒联匈牙利公开赛于1月15日~20日在布达佩斯举行，国乒男队女队共有31名选手报名本次赛事；下列关于比赛中的情景说法正确的是（）A．兵乓球被击出后，仍受到球拍的弹力作用B．乒乓球飞行时，球拍的弹力对乒乓球没有做功C．击球时球拍对乒乓球的力大于乒乓球对球拍的力D．乒乓球在空中飞行时不受力的作用10 . 下列说法正确的是（）A．电梯匀速上升的过程中，电梯对人的支持力不做功B．悬浮在水中的物体受到水的压力，压力的合力与该物体受到的重力是平衡力C．汽车车窗打开时，遮阳的窗帘总是往外飘是因为车内空气流速大，压强大D．将一个物体提升同一高度，竖直拉物体比利用斜面费力，做的有用功也大些11 . 汽车在水平公路上匀速直线行驶，下列各对力中是平衡力的是A．汽车受到的牵引力和汽车受到的重力B．汽车受到的重力和汽车对路面的压力C．汽车受到的牵引力和路面对汽车的阻力D．汽车对路面的压力和路面对汽车的支持力12 . 1ｍ3的冰和1ｍ3的水相比较A．冰和水的体积相同，水比冰的质量大B．冰的体积跟它全部熔化成水后的体积相同C．水全部结成冰后，与冰的质量相同D．冰的密度比水小，冰的质量比水大二、填空题13 . 一杯酒精质量为16g，体积20 cm3，则其物体的密度是_____kg/m314 . 图（a）所示是晓明同学在体育测试中跳箱时的情景。
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弟1页 （共2页） 弟2页 （共2页）
2019--2020学年度第二学期模拟卷 九年级道德与法治 答案 本试题满分100分，考试时间 60 分钟。
考生务必填写清楚班级、姓名、级号。
将答案填写在答题卡上，考试结束后上交。
一、单项选择题（本大题共20小题，每小题3分，共60分。
在各题的四个选项中，只有一项是最符合题意要求的答案） 21.答：(1)①战胜挫折；(2分)②善于合作。
(2分) (2) ①面对挫折，发掘自身的生命力量，需要培养自己面对困难的勇气和坚强的意志；②发掘自身的力量并不排斥借助外力。
我们在坚持目标和不断努力的道路上，学会与他人建立联系，向他人寻求帮助，获得他人的支持和帮助，有助于增强我们生命的力量；③善于合作，分工协作，优势互补，相互帮助，共同进步，充分发展各自的能力。
(6分) 22. 答：(1)①每个民族的文化都是独特的，都有其存在的价值，都有值得尊重的经验和智慧。
各民族文化共同构成姹紫嫣红、生机盎然的世界文化大花园；②文化多样性是人类社会的基本特征，是世界文化充满活力的表现，也是人类文明进步的重要动力。
(4分) (3) ①举办亚洲文明对话大会，有利于学习和借鉴优秀外来文明成果，促进和而不同、兼收并蓄的文明交流；②文明因交流而多彩，文明因互鉴而丰富。
中华文明在交流互鉴中发展。
举办亚洲文明对话大会，有助于自身文明的发展，而且能够推动世界文明的进步，与其他文明携手解决人类共同面临的各种问题。
(5分) (4) ①正确认识文化差异，以开放包容的态度对待其他文化，通过平等交流、对话，促进和而不同、兼收并蓄的文明交流；②学习和借鉴人类文明的一切优秀成果，坚持以我为主，兼收并蓄；③对其他文明的学习，我们不能只满足于欣赏物件的精美，更应领略其中蕴含的人文精神。
(5分) 23. 答：(1)①科教兴国战略、创新驱动发展战略。
(2分)②目前，我国在尖端技术的掌握和创新方面打下了坚实基础，在一些重要科技领域走在了世界前列。
(2分) (2) ①党和政府重视科技人才，不断激励广大科技工作者发挥积极性和创造性；②我国大力营造尊重劳动、尊重知识、尊重人才、尊重创造的社会氛围；③我国大力实施科教兴国战略和人才强国战略、创新驱动发展战略，鼓励科技创新；④科技创新能力已经成为综合国力竞争的决定性因素。
(任答3点以上6分) (3)①培养创新意识，增强创新能力，弘扬敢为人先、勇于探索、自强不息的精神；②树立终身学习理念，养成主动学习、不断探索的习惯；③多角度思考问题，培养创新思维和实践能力，努力做到知行合一。
(6分，其他答案言之有理酌情赋分)。