初一升初二练习卷(二)

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初一升初二试题数学及答案

初一升初二试题数学及答案

初一升初二试题数学及答案初一升初二数学试题一、选择题(每题2分,共10分)1. 下列哪个数是最小的正整数?A. 0B. 1C. 2D. -12. 如果一个角是直角的补角,那么这个角的度数是:A. 45°B. 90°C. 180°D. 360°3. 一个数的平方根是它本身,这个数可能是:A. 1B. -1C. 0D. 44. 一个数的绝对值是它本身,这个数可能是:A. 正数B. 负数C. 0D. 所有数5. 以下哪个代数式是二次的?A. \( x + 2 \)B. \( x^2 + 3x + 1 \)C. \( x^3 - 5 \)D. \( 2x^2 + x \)二、填空题(每题2分,共10分)6. 一个数的相反数是-8,这个数是______。

7. 如果一个三角形的两边长分别是3和4,第三边的长x满足1<x<7,这个三角形是______三角形。

8. 一个数的立方根是2,这个数是______。

9. 一个数的平方是25,这个数是______。

10. 如果一个数的绝对值是5,这个数可能是______。

三、计算题(每题5分,共15分)11. 计算 \( 2x^2 - 3x + 1 \) 除以 \( x - 1 \) 的商和余数。

12. 解方程 \( 3x - 5 = 14 \)。

13. 化简 \( \frac{3x^2 - 7x + 2}{x + 1} \)。

四、解答题(每题10分,共20分)14. 一个直角三角形的两个直角边分别是6和8,求斜边的长度。

15. 一个长方形的长是宽的2倍,如果长是10厘米,求长方形的周长。

五、证明题(每题15分,共15分)16. 证明:如果一个三角形的两边长分别是a和b,且a<b,那么这个三角形的高h满足 \( h < \frac{b}{2} \)。

答案:一、选择题1. B2. C3. C4. C5. B二、填空题6. 87. 锐角8. 89. ±510. ±5 或 0三、计算题11. 商为 \( 2x - 1 \),余数为2。

初一升初二试题数学及答案

初一升初二试题数学及答案

初一升初二试题数学及答案初一升初二数学试题一、选择题(每题2分,共20分)1. 下列哪个选项是最小的正整数?A. 0B. 1C. -1D. 22. 如果一个数的平方等于它本身,这个数可能是:A. 0B. 1C. -1D. 23. 一个数的绝对值是其本身,这个数:A. 一定是正数B. 一定是负数C. 可以是正数或0D. 可以是负数或04. 两个数相除,商为1,余数为0,这两个数:A. 相等B. 不相等C. 互为倒数D. 互为相反数5. 下列哪个是偶数?A. 2B. 3C. 4D. 5二、填空题(每题2分,共20分)6. 一个数的相反数是-5,这个数是______。

7. 一个数的绝对值是5,这个数可能是______或______。

8. 两个数的乘积为24,其中一个数是4,另一个数是______。

9. 一个数的平方是16,这个数是______或______。

10. 如果一个数的立方等于-8,这个数是______。

三、计算题(每题5分,共30分)11. 计算下列各题,并写出计算过程:- 3.14 × 2 + 5 - 2.5- (-3) × (-2) - 4 ÷ 212. 解下列方程:- 2x + 5 = 11- 3x - 7 = 2x + 1四、解答题(每题10分,共30分)13. 一个长方形的长是15厘米,宽是10厘米,求这个长方形的周长和面积。

14. 某班有40名学生,其中男生人数是女生人数的2倍,求这个班的男生和女生各有多少人。

15. 某商店进了一批货物,每件货物的进价是50元,标价是100元,如果打8折出售,商店每件货物的利润是多少?答案:一、选择题1. B2. B3. C4. A5. A二、填空题6. 57. 5,-58. 69. 4,-410. -2三、计算题11.- 3.14 × 2 + 5 - 2.5 = 6.28 + 5 - 2.5 = 8.78- (-3) × (-2) - 4 ÷ 2 = 6 - 2 = 412.- 2x + 5 = 11 → 2x = 6 → x = 3- 3x - 7 = 2x + 1 → x = 6四、解答题13. 周长= 2 × (长 + 宽) = 2 × (15 + 10) = 50厘米面积 = 长× 宽= 15 × 10 = 150平方厘米14. 设女生人数为x,则男生人数为2x,x + 2x = 40 → x = 13.33,由于人数不能为小数,题目可能有误。

初一升初二数学试卷附答案

初一升初二数学试卷附答案

一、选择题(每题5分,共25分)1. 下列各数中,正数是()A. -3.14B. -0.5C. 0D. 22. 下列代数式中,最简的是()A. a + 3bB. 2a + 2bC. 3a - 2bD. 4a + 5b3. 若a = 2,b = -1,则表达式a^2 - 2ab + b^2的值为()A. 1B. 3C. 5D. 74. 一个长方形的长是5cm,宽是3cm,那么它的面积是()A. 8cm^2B. 10cm^2C. 15cm^2D. 20cm^25. 下列图形中,是轴对称图形的是()A. 等腰三角形B. 长方形C. 正方形D. 圆二、填空题(每题5分,共25分)6. 若x + y = 7,且x - y = 3,则x = ______,y = ______。

7. 若a = 3,b = -2,则2a - 3b = ______。

8. 1.5的平方根是 ______。

9. 下列分数中,最小的是 ______。

10. 下列小数中,最大的是 ______。

三、解答题(每题10分,共30分)11. 解方程:3x - 5 = 2x + 7。

12. 已知一个三角形的两边长分别为3cm和4cm,求第三边的取值范围。

13. 计算下列各式的值:(1)(a - b)^2 + (a + b)^2;(2)(a + b)(a - b)。

四、应用题(20分)14. (10分)某商店有一种商品,原价每件200元,现价每件150元,现价是原价的几分之几?15. (10分)一个梯形的上底长为10cm,下底长为20cm,高为15cm,求这个梯形的面积。

---答案一、选择题1. D2. A3. A4. C5. D二、填空题6. x = 5,y = 27. 138. ±√1.59. 1/310. 1.5三、解答题11. 3x - 5 = 2x + 7x = 1212. 3cm < 第三边 < 7cm13. (1)2a^2 + 2b^2(2)a^2 - b^2四、应用题14. 现价是原价的150/200 = 3/415. 梯形面积 = (上底 + 下底) × 高÷ 2 = (10 + 20) × 15 ÷ 2 = 150cm^2。

初一升初二英语练习卷

初一升初二英语练习卷

初一升初二英语练习卷-CAL-FENGHAI.-(YICAI)-Company One1初一升初二英语(一)一.单项选择1. – What _______unusual pet! Where did you get it? -In _______empty box at my door.A. a; aB. a; anC. an; aD. an; an2. You should do eye exercises with your eyes_______.A. openedB. openC. closedD. close3. - Whose blouses are these? -I think they belong to_______.A. he B.she C.her D.hers4. My mother likes watching TV for _______every evening.A. some timeB. some timesC. sometimeD. sometimes5. - Look! There's a sign over there. - It _______ "No smoking".A. is saidB. saysC. is sayingD. said6. Dick, what _______last week?A. you happenB. you happenedC. happened to youD. did you happen7. My dancing lesson _______be in the morning.A. may likelyB. likely is toC. is likelyD. is likely to8. He has many friends here, but I have _______.A. noB. noneC. notD. no any9. - Dad, shall we have breakfast now?- No. We won't have breakfast _______your mom gets up.A. untilB. sinceC. whileD. after10. John had a short walk after lunch, _______A. did heB. didn't heC. had heD. hadn't he11. You need more _______to play the piano well.A. practiceB. practiseC. practisesD. practising12. It will be windy tomorrow, so we _______fly a kite in the park.A. shouldB. canC. mustD. can't13. Don't put _______into the rubbish bin.A. hot somethingB. something hotC. hot anythingD. anything hot14. Could you tell me _______A. how can I get thereB. how could I get thereC. how I could get thereD. how to get there15. - Can you help me with my Maths? -_______.A. You're welcome.B. That's all right.C. No problem.D. Never mind.17. - Can the new plane fly _____the sea- Yes, but it needs to go _____the clouds for hours.A. across; throughB. through; acrossC. across; acrossD. through; through18. We arrived late at the cinema, and _______the start of the film.A. caughtB. missedC. gotD. lost19. My mother is a teacher and she always helps my brother and _______with_______English.A.I; ourB. me; ourselvesC. I; myD. me; our20. - How many tins of dog food can we buy with the money? - _______.A. NothingB. Not muchC. NoneD. No one21. My little brother was _______but now he enjoys meeting and talking to new friends.A. activeB. shyC. carelessD. brave22. Traffic accidents(事故)_______happen on such a snowy day.A. mustB. shouldC. canD. shall23. _______trees were cut down, so many birds lost their home.A. Two thousandsB. Thousands ofC. Thousand ofD. Two thousand of24. _______worried about me, Mom. I can look after myself.A. Don'tB. Don't beC. NotD. Not be25. When l was a child, my dad often _______me to the park nearby to watch birds.A. bringsB. takesC. brought.D. tookB)完形填空Long ago, a young man often said that he was very 26 and owned nothing. One day, an old man walked 27 .He heard the young man's words and said, "Hello, young man! What are you 28 about You have nothing That's not true! You have the most expensive things in the world, 29 you are a rich person." The young man was very surprised and asked,“ 30 do you say that You can see I have nothing. What are these expensive things" Then 31 old man said, "If you sell your eyes to a rich blind man, you'll 32 a lot of money and can get everything you want. Would you like to sell them"The young man didn't want to be blind, so he said, "No." The old man asked again, "Then what about 33 your hands for some gold"The young man shook his 34 for the second time. Finally, the old man said, "Now you understand. You have the most expensive things in the world." So, the old man taught both the young man and us a lesson - 35 is the most important for us.26. A. poor B. rich C. healthy D. strong27. A. across B. past C. through D. away28. A. talking B. drawing C. singing D. telling29. A. but B. and C. so D. however30. A. What B. When C. Why D. How31. A. the B. a C. an D. /32. A. save B. buy C. make D. collect33. A. putting up B. selling C. turning D. washing34. A. eye B. leg C. hand D. head35. A. gold B. time C. health D. money三、阅读理解(共15小题;每小题2分,满分30分)ABirthdays are celebrated all over the world. Some ways to celebrate birthdays are rather similar from country to country: candles, cakes and birthday wishes. But there are also different ways to celebrate birthdays. Here are a few:Denmark A flag is flown outside a window to show that people in that house are having a birthday. Presents are placed around the child's bed while he is sleeping so he will see them at once when he wakes up.India Usually Indian children wear white to school. However, on their birthday, children wear colored clothes to school and give out chocolates to everyone in the class. Their best friend helps them to do this.Japan The birthday child wears new clothes to mark the special time, Certain birthdays are more important than others. These are the third and seventh birthdays for girls and the fifth for boys.Holland The birthday child receives an especially large present. The family also put flowers on the birthday child's chair to make it beautiful.36. In _______flowers are put on the chair of the birthday child.A. JapanB. DenmarkC. IndiaD. Holland37. In Japan, the birthday is more important for boys when they are _______.A.15B.7C.5D.338. The passage is mainly about _______.A. similar ways of celebrating birthdays in some countriesB. different ways of celebrating birthdays in some countriesC. children's birthdays in western countriesD. the importance of children's birthdaysBTo save time, many Americans buy food which can be quickly made ready for the table. On holidays, families enjoy delicious meals. For example, on Thanksgiving Day, the fourth Thursday in November, family members get together for a turkey dinner with pumpkin pie (南瓜派) .The United States is known around the world for its fast food, such as hamburgers, sandwiches, pizzas, salad bars, and many kinds of ice cream. People can easily find fast food chains (连锁店), such as McDonalds' and KFC, in most of the big cities in the world.These years, many people have taken more and more care of their health while eating. They come to know eating too much meat will make them overweight. Many of them are also worried about food addictives (添加剂 ). Some of them may be harmful to the body.39. Many Americans buy _______to save time.A. ready-made foodB. food to cook at homeC. inexpensive foodD. foreign food40. Pizza is a kind of _______food.A. take-awayB. home-cookingC. fastD. Chinese41. What does the word 'overweight' meanIt means _______.A. thinnerB. fatterC. worseD. betterCOnce there was a baby eagle (鹰)living in a nest (巢) on a cliff (悬崖). The baby eagle loved his nest. It was warm, soft and comfortable. And even better, he had all the food and love that his mother could give. Whenever the baby eagle was hungry, his mother would always come just in time with the delicious food he liked.He was growing happily day after day. But suddenly his world changed. His mother stopped coming to the nest. He was full of sadness and fear. He thought he would die soon. He cried, but nobody heard him.Two days later his mother appeared with some nice food. The baby eagle was wild with joy. But his mother put the food at the top of the mountain and then looked down at her baby. The baby eagle cried out. "Mum, why did you do this to meI'm hungry. Don't you know I will die if I have nothing to eat""Here is the last meal I give you. Come and get it by yourself," his mother said. Then she flew down and pushed the baby eagle out of the nest.The baby eagle fell down, faster and faster. He looked up at his mum, "Why do you abandon me"He looked down at the earth. The ground was much closer. Then something strange happened. The air caught behind his arms and he began to fly! He wasn't moving to the ground any more. Instead, his eyes were pointed up at the sun."You are flying! You can make it!" His mother smiled.42. How did the baby eagle feel as soon as he saw his mother coming again?A. Sad.B. Happy.C. Afraid.D. Angry.43. What did the baby eagle's mother do when she came the last time?A. She put some food in the nest.B. She just came to see him again.C. She shouted at her baby eagle and flew away.D. She pushed her baby eagle out of the nest.44. What does the word "abandon" mean?A.抛弃 B.保护 C.歧视 D.拯救45. We can infer (推断) from the story that_______.A. the baby eagle lost his motherB. the baby eagle fell down and diedC. the baby eagle could get food himselfD. the baby eagle was still angry with his motherDMr. Read works in a hospital. He's a good doctor, but he often forgets things. People know him and don't mind it.One morning he did an operation(手术) on an old woman. It took him three hours to finish it. He looked at his watch and found it was twelve thirty. He felt hungry and wanted to have lunch.When he got to the lift, he remembered he didn't wash his hands. He went back to his office and put his coat on the chair. Then he washed his hands and left. However in the restaurant, he found he forgot to wear his coat. All his money was in one of the pockets. He got up and went back to the hospital. He ran to the lift but it was going to close. He put his head into it, and the doors opened. A man in the lift said, "Oh, dear sir! Why didn't you hold the doors open with your hands It's too dangerous to do so with your head!""I think my hands are more important than my head. I have to do operations not with my head, but with my hands!”47. People know Mr. Read _______, but they don't mind it.A. is a doctorB. often forgets thingsC. works in the hospitalD. often does operations48. The operation began at _______that morning.A. eight thirtyB. nineC. nine thirtyD. ten49. Mr. Read left the restaurant because_______A. he ate much thereB. he couldn't find his friendC. he had no money with himD. it was closed40. Mr. Read put his head into the lift because_______.A. I he wanted to know who was in itB. he wanted to get out of itC. his head was much harder than his handsD. he was afraid it could hurt his hands四、单词拼写51. Tomorrow will be his father's (四十九)birthday.52. Miss Zhao is our English teacher. She teaches (我们)English.53. Do you know the (重量)of six elephants?54. How many (三明治)can you buy with the money'55. That is really (可怕)news.56. They all want to be (科学家)when they grow up.57. When my parrot is full, he sings (开心).58. - Does your grandfather live with you'- No, he lives .But he is not lonely.59. - Don't make any , John. They are sleeping. - Sorry, I won't.60. - What time is it now'- Sorry, I don't know. Because I ▲ my watch at home.五、句型转换61. They will bring us some good news.(用yesterday改写)They us good news yesterday.62. He couldn't go for a picnic because he was ill.(对划线部分提问)he go for a picnic?63. You need to finish it today.(改为否定句) You to finish it today.64. How amazing the book is!(同义句转换) amazing book it is l65. Don't pull the rabbit's ear, ▲▲(完成反意疑问句)六、句子翻译(共5小题;每小题3分,满分15分)将下列句子译成英语,并将所译句子写在答题卷标有题号的横线上。

数学试卷初一升初二

数学试卷初一升初二

一、选择题(每题5分,共50分)1. 下列各数中,是整数的是()A. 2.5B. -3.14C. 0D. 3/42. 已知一个数的平方是4,那么这个数是()A. 2B. -2C. 2或-2D. 03. 下列运算正确的是()A. 3 + 4 × 2 = 19B. 3 × 4 + 2 = 14C. 3 + 4 ÷ 2 = 5D. 3 × 4 ÷ 2 = 64. 一个长方形的长是6cm,宽是4cm,那么它的周长是()A. 10cmB. 16cmC. 20cmD. 24cm5. 已知一个等腰三角形的底边长是8cm,腰长是6cm,那么它的面积是()A. 24cm²B. 30cm²C. 32cm²D. 36cm²6. 下列各式中,是比例的是()A. 2 : 3 = 4 : 6B. 2 : 3 = 6 : 9C. 2 : 3 = 3 : 2D. 2 : 3 = 6 : 47. 已知一个数的倒数是1/3,那么这个数是()A. 3B. -3C. 1/3D. -1/38. 下列图形中,是轴对称图形的是()A. 正方形B. 等边三角形C. 长方形D. 等腰梯形9. 已知一个数的立方是27,那么这个数是()A. 3B. -3C. 3或-3D. 010. 下列运算正确的是()A. 3 + 4 × 2 = 19B. 3 × 4 + 2 = 14C. 3 + 4 ÷ 2 = 5D. 3 × 4 ÷ 2 = 6二、填空题(每题5分,共50分)1. 5的倒数是________。

2. (-2)的平方是________。

3. 3/4与4/3的乘积是________。

4. 0.5 + 0.25 = ________。

5. 2.5 - 1.2 = ________。

6. 3 × 3 × 3 = ________。

初一升初二语文试题及答案

初一升初二语文试题及答案

初一升初二语文试题及答案一、选择题(每题2分,共10分)1. 下列词语中,加点字的读音全部正确的一项是:A. 迸溅(bèng) 踌躇(chóu) 瞠目结舌(chēng)B. 箴言(zhēn) 哽咽(yè) 蹒跚(pán)C. 蹊跷(qī) 缄默(jiān) 恣意妄为(zì)D. 倔强(juè) 踌躇(chú) 瞠目结舌(chēng)2. 下列句子中,没有语病的一项是:A. 通过这次活动,使我们的团队精神得到了极大的提升。

B. 他不但学习成绩优秀,而且乐于助人,深受同学们的喜爱。

C. 为了防止这类事故不再发生,学校采取了一系列措施。

D. 他那勤奋好学的精神,值得我们大家学习。

3. 下列句子中,使用了比喻修辞手法的一项是:A. 他像一只勤劳的小蜜蜂,不停地在花丛中采蜜。

B. 他跑得像风一样快。

C. 她的笑容像春天的阳光一样温暖。

D. 这些书就像知识的海洋,让人沉浸其中。

4. 下列句子中,使用了排比修辞手法的一项是:A. 春天的花开了,夏天的果实熟了,秋天的落叶飘了,冬天的雪花落了。

B. 他勤奋学习,他乐于助人,他热爱生活。

C. 他不仅学习好,而且工作能力强,还乐于助人。

D. 春天的花开得绚丽,夏天的果实长得饱满,秋天的落叶飘得轻盈,冬天的雪花落得寂静。

5. 下列句子中,使用了夸张修辞手法的一项是:A. 他的嗓门大得像喇叭一样。

B. 他跑得像风一样快。

C. 她的笑容像春天的阳光一样温暖。

D. 这些书就像知识的海洋,让人沉浸其中。

答案:1. D 2. B 3. A 4. A 5. A二、填空题(每题2分,共10分)6. “春眠不觉晓,处处闻啼鸟。

”是唐代诗人孟浩然的《________》中的诗句。

7. “但愿人长久,千里共婵娟。

”出自宋代文学家苏轼的《________》。

8. “老骥伏枥,志在千里”中的“骥”指的是________。

9. “海内存知己,天涯若比邻”出自唐代诗人王勃的《________》。

初一升初二测试题及答案

初一升初二测试题及答案

初一升初二测试题及答案一、选择题(每题2分,共20分)1. 下列哪个选项是正确的?A. 地球是宇宙的中心B. 太阳是宇宙的中心C. 地球绕着太阳转D. 地球是静止不动的答案:C2. 以下哪个是光年的定义?A. 光年是时间单位B. 光年是长度单位C. 光年是速度单位D. 光年是质量单位答案:B3. 世界上最大的洋是?A. 大西洋B. 太平洋C. 印度洋D. 北冰洋答案:B4. 中国的首都是?A. 上海B. 北京C. 广州D. 成都答案:B5. 以下哪个选项不是四大发明之一?A. 造纸术B. 印刷术C. 指南针D. 火药答案:D6. 以下哪个选项是正确的?A. 氧气可以燃烧B. 氧气可以支持燃烧C. 氧气可以灭火D. 氧气不能燃烧答案:B7. 以下哪个选项是正确的?A. 植物通过光合作用产生氧气B. 植物通过光合作用产生二氧化碳C. 植物通过光合作用产生水D. 植物通过光合作用产生食物答案:A8. 以下哪个选项是正确的?A. 人体最大的器官是皮肤B. 人体最大的器官是心脏C. 人体最大的器官是肝脏D. 人体最大的器官是肺答案:A9. 以下哪个选项是正确的?A. 电子比原子小B. 电子比原子大C. 电子和原子一样大D. 电子和原子没有可比性答案:A10. 以下哪个选项是正确的?A. 光速是宇宙中最快的速度B. 光速是宇宙中最慢的速度C. 光速是宇宙中唯一的速度D. 光速不是宇宙中的速度答案:A二、填空题(每题2分,共20分)1. 地球的自转周期是________小时。

答案:242. 世界上最大的沙漠是________。

答案:撒哈拉沙漠3. 人体中含量最多的元素是________。

答案:氧4. 世界上最长的河流是________。

答案:尼罗河5. 世界上最大的哺乳动物是________。

答案:蓝鲸6. 植物通过________作用吸收二氧化碳。

答案:光合作用7. 人体中最大的细胞是________。

答案:卵细胞8. 世界上最深的海沟是________。

初一升初二数学2

初一升初二数学2

2012年暑期培训班初一升初二年级试题第5页(共 6页) 2012年暑期培训班初一升初二年级试题第6页(共6页)AB EC D圆梦教育培训学校学生试卷题号 一 二 三 总分 阅卷教师得分圆梦教育2012年暑假初一升初二数学结业考试试题(满分100分,考试时间90分钟)一、选择题(每小题1.5分,共30分)1、若∣-a ∣=-a 则有A 、a ≥ 0B 、a ≤ 0C 、a ≥-1D 、-1≤a ≤0 2、在 ABC 中,AB=14,BC=2x ,AC=3x ,则x 的取值范围是( )A 、x >2.8B 、2.8<x <14C 、x <14D 、7<x <14 3、在平面直角坐标系中,点(-1,3m2+1)一定在( ) A .第一象限. B.第二象限. C.第三象限. D.第四象限4、某种商品的进价为800元,出售时标价为1200元,后来由于该商品积压,商店准备打折销售,但要保证利润率不低于5%,则至少可打( ) A .6折 B .7折 C .8折 D .9折5、如果点A (a.b )在第三象限,则点B (-a+1,3b -5)关于原点的对称点是( )A 第一象限B 第二象限C 第三象限D 第四象限6、△DEF (三角形)是由△ABC 平移得到的,点A (-1,-4)的对应点为D (1,-1),则点B (1,1)的对应点E 、点C (-1,4)的对应点F 的坐标分别为( )A 、(2,2),(3,4)B 、(3,4),(1,7)C 、(-2,2),(1,7)D 、(3,4),(2,-2)7、若x 轴上的点P 到y 轴的距离为3,则点P 的坐标为( )A .(3,0)B .(3,0)或(–3,0)C .(0,3)D .(0,3)或(0,–3)8、已知三角形的三个顶点坐标分别是(-1,4),(1,1),(-4,-1),现将这三个点先向右平移2个单位长度,再向上平移3个单位长度,则平移后三个顶点的坐标是( ) A 、(-2,2),(3,4),(1,7); B 、(-2,2),(4,3),(1,7);C 、(2,2),(3,4),(1,7);D 、(2,-2),(3,3),(1,7)9、若点P(m -1, m )在第二象限,则下列关系正确的是( )A 、 10<<mB 、 0<mC 、 0>mD 、 1>m 10、小芳画一个有两边长分别为5和6的等腰三角形,则它的周长是( )A 、16B 、17C 、11D 、16或1711、如图,已知直线AB ∥CD ,当点E 直线AB 与CD 之间时,有∠BED =∠ABE +∠CDE 成立;而当点E 在直线AB 与CD 之外时,下列关系式成立的是( ) A ∠BED =∠ABE +∠CDE 或∠BED =∠ABE -∠CDEB ∠BED =∠ABE -∠CDEC ∠BED =∠CDE -∠ABE 或∠BED =∠ABE -∠CDE D ∠BED =∠CDE -∠ABE12、已知一多边形的每一个内角都等于150°,则这个多边形是正( ) A 、 十二边形 B 、十边形 C 、 八边形 D 、 六边形13、如图,在锐角△ABC 中,CD 、BE 分别是AB 、AC 边上的高, 且相交于一点P ,若∠A=50°,则∠BPC 的度数是( ) A .150° B .130° C .120° D .100°14、在锐角三角形中,最大内角的取值范围是( ) A 、0°<<90° B 、60°<<180° C 、60°<<90° D 、60°≤<90°15、在∆ABC 中,C B ∠∠,的平分线相交于点P ,设,︒=∠x A 用x 的代数式表示BPC ∠的度数,正确的是( ) A 、x 2190+B 、x 2190- C 、x 290+ D 、x +90 16、等腰三角形的底边BC=8 cm ,且|AC -BC|=2 cm ,则腰长AC 为( )A.10 cm 或6 cmB.10 cmC.6 cmD.8 cm 或6 cm17、下列命题中正确的是( )A .全等三角形的高相等B .全等三角形的中线相等C .全等三角形的角平分线相等D .全等三角形对应角的平分线相等18、△ABC 的三边AB 、BC 、CA 长分别是20、30、40,其三条角平分线将△ABC 分为三个三角形,则S △ABO ︰S △BCO ︰S △CAO 等于( )A .1︰1︰1B .1︰2︰3C .2︰3︰4D .3︰4︰5 19、如图所示,△ABE 和△ADC 是△ABC 分别沿着AB ,AC 边翻折180°形成的,若∠1∶∠2∶∠3=28∶5∶3,则∠α的度 数为( ) A .80° B .100° C .60° D .45°20、.已知:△ACB 和△ADB 中,AC =AD ,则添加下列仍不能得到△ACB ≌△ADB 的条件是( )A. ∠ABC =∠ABDB.CB =DBC. ∠CAB =∠DABD.AB 平分四边形ADBC 的一组对角二、填空题(每小题1.5分,共24分)1、在△ABC 中,∠A=3∠B ,∠A -∠C=30°,则∠A=____,∠B=____,∠C=______。

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初一升初二练习卷(2)一. 单项选择1. It will ___me 2 days__ finish the job.A. cost, toB. spend, toC. cost, ofD. take, to2. -___ will she come back home?-In two days.A. How longB. How soonC. How oftenD. How fast3. If it_____rain tomorrow, I ____go hiking.A. will not, willB. does not, willC. will, don’tD. does not, don’t4.Tina is a good student. She does herhomework_______than others.A. much carefullyB. much more carefullyC. very carefullyD. more carefully5. I heard her___at this time yesterday.A. singingB. to singC. sangD. sing6. The little boy needs a _______ rope to skip(跳绳).A. five-meter-longB. five-meters-longC. five-metered-longD. five meters long7. Will you please ____ in class?A. not to talkB. not talkC. not talkingD. don’t talk8. ______funny news he is telling us!A. WhatB. What aC. HowD. What an9. There is a little water in the glass, _______?A. isn’t thereB. is thereC. isn’t itD. is it10. Mike eats_____rice than his brother_____.A. fewer, doesB. less, doesC. little, doesD. less, eats11. He said he didn’t know the solution___ the problem. A. of B. to C. with D. for12. We’d better _____ a new school for those poor kids.A. put upB. wake upC. set upD. look up13. Please tell me ______.A. where have you beenB. where you have beenC. where did you goD. where you want to go to14. I was so angry that he had kept me_____ for a long time.A. waitB. to waitC. waitingD. of waiting15. It’s about _____ walk from the school to that market.A. half an hour’sB. ten minutesC. half hoursD. ten minute’s16. Her mother makes her_____ go out on school nights.A. notB. not toC. do notD. does not17.The film was very ______ . All of us were _______ about it.A. excited, excitingB. exciting, excitingC. excited, excitedD. exciting, excited18. Susan’s glasses are the same____ Anna’s but different_____ Jenny’s.A. as; asB. as; likeC. as.; fromD. like; as19. Teenagers are not allowed________.A. to smokeB. smokingC. of smokingD. to smoking20. Think hard___ you will find a good way.A. andB. ifC. butD. that二.阅读理解Everyone likes living in a clean and comfortable environment(环境) . If the environment are bad, it will affect(影响)our body, and make us not feel well. Sometimes we may be terribly ill. At that time we don’t want to work, and we have to stay in bed and rest at home. So the environment is very important to us.It’s germs that make us ill. There are germs everywhere, They are very small and you can’t find them with your own eyes, but you can see them with a microscope(显微镜). They are very small and there may be hundreds of them on a very small thing. Germs can always be found in dirty water. When we look at dirty water under the microscope, we shall see them in it. Germs can also be found in air and dust. If you cut your finger, some of the dust from the floor may go into it, and you will have much pain in it. Sometimes the germs will go into all of your body, and you will have pain everywhere.To keep us healthy, we should try to our best to make our environment become cleaner and tidier. This needs us to act together.1. The writer tell us that________.A. we like working when we are illB. germs can’t live in the water.C. we can’t feel ill if the environment is bad.D. we feel well when the environment is good.2. Germs are________.A. very small things that you can’t see with your eyesB. the things that don’t affect peopleC. the things that you can find with your eyesD. the things that are very big3. Where can germs be found? They can be found_________.A. on the small thingB. in air and dustC. only in dirty waterD. everywhere4. How will you feel if germs go into the finger that is cut?A. I will feel nothing.B. I won’t mind.C. I will feel tense.D. I will feel painful.5. From the passage we know that________.A. environment doesn’t affect our lifeB. we don’t need to improve our environmentC. germs may make us illD. if the environment is better, germs will be more.三.完形填空During the day we work and play, and at night we sleep. Our bodies rest while we are __1__. In the morning we are ready____2___ again. Our bodies grow ____3____ while we are asleep. Children who are tired usually ___4___ sleep. We can get better at our lessons ___5___ we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our bodies need plenty of ____6___ when we sleep. If we do not get enough fresh air, we ____7___ tired when we wake up. While in bed we must not cover our ____8___. Our lungs(肺) need to get enough fresh air. If we ___9___ our windows at night, we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to be ___10___ must get plenty of sleep.( ) 1. A. asleep B. sleep C. rest D. play( ) 2. A. to work and play B. working and to playC. to work and playingD. working and playing( ) 3. A. much B. more C. most D. slow( ) 4. A. can B. may C. need D. must( ) 5. A. while B. before C. as D. after( ) 6. A. air B. sun C. water D. food( ) 7. A. felt B. will feel C. are feeling D. has felt( ) 8. A. foot B. arm C. head D. body( ) 9. A. open B. close C. draw D. use( ) 10. A. happy B. interested C. helpful D. healthy四.词语填空city give with move begin away another drive born watch Most Americans enjoy 1.___________ from place to place. For example, they often 2.___________ their cars 120 to 160 kilometers 3.___________ just to have dinner 4.___________ a friend or even fly to London or Paris just to 5.___________ a football match. In some states only one person in five lives in a place for more than five years. One may be 6.___________ in one city, and go to school in 7.___________. He may finish his middle school in two or three 8.___________, and then go to college far across the country. When he 9.___________ to work, he may possibly move from job to job. Moving from one job to another, which is called “job-hopping”, is very common in the Un ited States.Job-hopping does good to workers because every change of a job 10.___________them a chance to get better pay. And job-hopping also gives bosses the chance to get new ideas and skills(技术) from him or her.。

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