9B Unit 3试题
一、单项选择(每小题1分，满分15分)
( ) 1. —terrible mess you have made!
— Sorry. I will clear it up right now.
A. What
B. How
C. How a
D. What a
( ) 2. To our own curiosity (好奇心), we traveled to that lonely island by boat.
A. satisfy
B. find
C. spread
D. hold
( ) 3. You needn’t missing the film. To be honest, it is not worth watching at all.
A. store
B. explain
C. regret
D. suggest
( ) 4.She is kind and helpful and often does_______she can to help me.
A. however
B. whatever
C. wherever
D. anyway
( ) 5. The robot needs once a month. And we will check it for you for free.
A. to check
B. be checked
C. checking
D. check
( ) 6. That robot was named Robonaut R2A. It outer space by NASA.
A. used to exploring
B. was used to exploring
C. was used to explore
D. used to explore
( ) 7. — What rules do I have to keep while working here?
—, you must always wear your uniform.
A. By the way
B. From then on
C. Believe it or not
D. First of all
( ) 8. — Excuse me, but can you to a Chinese speaker?
— Sure. Just a minute.
A. put me through
B. put me back
C. put me away
D. put me on ( ) 9. —I can’t decide to do with so many old clothes.
— Why not send them to a charity?
A. why
B. what
C. who
D. where
( )10. I agreed on her suggestion let her down, though I thought mine was better.
A. in order don’t
B. in order not to
C. not in order to
D. in order that not
( )11. The new method works very well. So far, everything has been going on that we don’t need to worry.
A. too completely
B. so completely
C. too smoothly
D. so smoothly
( )12. Mr Robinson is a careful detective. No detail is escape (逃脱) his attention.
A. too small to
B. so small that
C. as small as
D. not small enough
( )13. The new book sells well. Twenty copies already today.
A. have ordered
B. ordered
C. have been ordered
D. are ordering
( )14. — Hello, this is Andy. May I speak to Tony?
—. He is coming soon.
A. Hold on, please
B. I am terribly sorry
C. Be patient, please
D. You’re welcome ( )15. —Hello! My computer has caught a virus and it can’t work now.
—Don’t worry. What’s your telephone number?
A. What can I do for you then?
B. I’m sorry to hear that.
C. Our technician (技术员) will contact you soon.
D. Please take care of your computer.
二、完形填空（每小题1分，满分15分）
Last summer I spent two weeks in Singapore with my mother and my sister. Before this trip, I heard that Singapore is one of the most beautiful and cleanest countries in 16. I hoped that I would have an unforgettable time there. In fact, the trip was 17
Many places in Singapore 18us. First, we visited Zoo and Jurong Bird Park. 1920 a
21
in Jurong Bird Park. We enjoyed the 22of the birds. The trained the birds
carefully and patiently for long 23they could dance, sing and even play basketball. At the end of the show, they sent the a message that 24people’s awareness(意识) of protecting birds. I think it is a very helpful and practical 25of educating people about the nature protection.
Second, after spending a week in relaxing and visiting some tourist spots(旅游景点) in Singapore, my sister and I 26to attend a short-term English course because English is the
27our English quickly. English the lessons.
The trip in Singapore was truly a nice 28in my life. During the trip, I learned much
29, I have made some new friends who I am still keeping in touch 30and I hope meet ( )16. A. Africa B. Asia C. America D. Europe
( )17. A. worse B. longer C. faster D. greater
( )18. A. attracted B. affected C. attacked D. held
( )19. A. All B. Neither C. Both D. Each
( )20. A. take B. cost C. waste D. spend
( )21. A. accident B. event C. case D. report
( )22. A. births B. fights C. parties D. performances
( )23. A. so that B. in order to C. such that D. even though
( )24. A. cures B. prevents C. raises D. reduces
( )25. A. way B. road C. result D. street
( )26. A. refused B. stopped C. decided D. forgot
( )27. A. speak B. pass C. express D. improve
( )28. A. idea B. experience C. skill D. question
( )29. A. In addition B. As a result C. In fact D. At last
( )30. A. at B. with C. for D. of
三、阅读理解（每小题2分，满分10分）
Making robots needs software engineers(软件工程师), mechanical engineers, electrical engineers and computer engineers, but I think software engineers play the most important part. A mechanical engineer will design the robot’s body. Electrical engineers will design the robot’s controlling, power, signal receiving, etc. Electro-mechanical engineers may work on the robot’s sensors (传感器). Computer engineers will design the robot’s brain. Now companies are hiring robotics engineers to develop everything from automated vacuum cleaners(自动吸尘器) to robot dogs. So do you want to be a robotics engineer? How do you find an effective way to get started to become a robotics engineer?
Here’s how I became a robotics engineer. It started with trying to build a robotic hand as a teenager in my parents’ garage. This was after I first learned how servo systems (随动系统) worked. So I only got the servo part working, but it was a start. Later I went to college to get an undergraduate degree (学士学位) as an electrical engineer. After that I worked as an electrical engineer for three years. I designed several automatic control systems that were very interesting. Then I went back to school, this time as a mechanical engineer, and completed all the undergraduate mechanical engineering courses. After that I also received a Master’s degree and the degree of PhD on robotics.
If you are interested in becoming a robotics engineer and would like to chat by email, please feel free to contact me.
( )41. Who play the most important part in making robots?
A. Computer engineers.
B. Mechanical engineers.
C. Electrical engineers.
D. Software engineers.
( )42. What does a mechanical engineer design while making a robot?
A. The robot’s brain.
B. The robot’s body.
C. The robot’s power.
D. The robot’s sensors.
( )43. What did the writer do when he worked as an electrical engineer?
A. He built a robotic hand.
B. He got the servo system working.
C. He designed some automatic control systems.
D. He completed all the mechanical engineering courses.
( )44. Which of the following is NOT true according to the passage?
A. Making automated vacuum cleaners and robot dogs needs robotics engineers.
B. People who want to become a robotics engineer can call the writer.
C. The writer started to learn about robotics when he was a young boy.
D. The writer learned and got four degrees before becoming a robotics engineer.
( )45. What’s the purpose of the passage?
A. To tell people it’s difficult to get the degree of PhD on robotics.
B. To tell people what they should learn before becoming a robotics engineer.
C. To call on more and more people to become robotics engineers.
D. To make friends with people who like robotics engineering.
四、填空(每小题1分，满分10分)
46. B2C stands for Business to (顾客). Most B2C companies are in fact online sellers.
47. Nobody can roll back the (车轮) of history.
48. To be a (私人的) detective sounds like a challenging job.
49. He (搁) all his work aside and started to play with his son.
50. If nothing is done, the virus will certainly (扩散) quickly.
51. Look out! The car is (complete) out of control.
52.The big cake was not enough to satisfy the boy’s ___________(hungry).
53. The woman looks (satisfy) while watching her son run around!
54. Apple Corporation’s (produce) are very popular all over the world.
55. My washing machine doesn’t work, so I will have it (repair).
五、完成句子（每小题2分，满分10分）
56. 似乎总体上来说，这台机器人满足了江先生的需要。
__________________________________________________________________
57.这台电脑的质量达到了标准
___________________________________________________________________
58.如果你够幸运的话，就会免费获得一本机器人杂志。
__________________________________________________________________
59. 据说他后悔买了那本书。
__________________________________________________________________
60.每六个月我的电脑需要检查一次以便于它不经常出毛病。
__________________________________________________________________
六、阅读填空(每小题1分，满分10分)每空一词。
Any discussion of entertainment robots has to include Disney World. They have been making entertainment robots for many years and they do it quite well. With dancing bears and singing pirates (海盗), Disney World has created thousands of robots. The robot shown in the picture is a robot dinosaur named Lucky. He walks on his two back legs and pulls a very large cart (二轮马车) of “silk flowers”. Really the cart is full of batteries.
I don’t go to the amusement park, but I’m sure my kids would love to. According to the manufacturer (制造商), KUKA Robotics, this is the first robotic arm with world-wide certification (合格证) to hold humans. KUKA makes robotic arms of very high quality for the
amusement park, so I would let my kids ride it.
No one can forget the pet robots that have come onto the market in the last decade (十年) or so. Sony’s Aibo robots (two of which are shown in the picture) have been the first robots to really spread through every part of our homes.
Some entertainment robots are not just remote-controlled (遥控的) speakerphones with video camera “eyes”. They can also go around at parties and play pre-recorded songs. Florida Robotics makes robots like these. They also make more robots that can talk with on-lookers (旁
71.__________ 72.__________ 73.__________ 74.__________ 75.__________
B. 阅读下面的短文，根据所给的首字母提示，用合适的单词填空。10分
Scientists are placing robot dogs in the homes of lonely old people to test whether they can improve the quality of life for humans. Alan Beck, an expert in human-animal relationship, and Nancy Edwards, a professor of nursing, are leading the s 91 on the effect of robot dogs on old people’s feelings.
In the study, the r 92 , called AIBO, is placed for six weeks in the houses of some old people who live a 93 . Before placing AIBO in the home, scientists will collect baseline data (数据) for six weeks. These old people will keep a diary to note their e 94 feelings and activity before and after AIBO. Then, the scientists will review the data to test if the robot dog has produced any changes in the life of its master.
“I talk to him all the time,” says a seventy-year-old lady. “W95 I do, he’ll stay with me. When I’m watching TV, he’ll stay in my arms until he wants down. He has a mind of his own.”
The scientists say they have some a 96 over live dogs, especially for old people. Often the elderly are disabled and cannot care for an animal by e 97 walking it or playing with it.
“At the beginning, it was b98 that no one would like the robot dog because it was metal and not furry.” Beck says. “But it’s amazing how quickly we have given up that belief.” “Hopefully, down the road, these robot p 99 could become more valuable health helpers. They will r 100 their masters’ data of health conditions. They may even one day help older
八、91. study 92. robot 93. alone 94. everyday 95. Whatever
96. advantages 97. either 98. believed 99. pets 100. record
七、书面表达(满分20分)
随着时代的发展和科技的进步，机器人开始走入我们的生活。作为一名学生，你觉得自己需要一个机器人吗？下面是九年级五班学生做的一份调查报告，请用英语介绍调查的结果，并说说自己的看法。
要求：1. 覆盖要点，内容充实，结构合理，语言流畅，书写工整；
Our class made a survey on whether we need robots in our everyday life. Here is the result.
参考答案：
1-5 DACBC 6-10 CDABB 11-15 DACAC
16-20 BDACD 21-25 BDACA 26-30 CDBAB
31-35 ABCCB36-40 BCDDA 41-45 DBCBB
46. customer 47. wheel 48. private
49. laid 50. spread 51. completely
52. unsure 53. satisfied 54. products
55. forgetful 56. in a mess 57. gone wrong
58. no longer 59. caught a virus 60. knocked over
61. so that he would have less difficulty
62. unless I see it with my own eyes
63. are filled with
64. watch the raising of the national flag
65. Climb up step by step
66. making 67. called/named
68. designed 69. batteries 70. first
71. standard 72. ten 73. homes/houses
74. parties 75. able
76. ancient 77. culture 78. high
79. made 80. sides 81. around
82. worth 83. capital 84. costs
85. less
One possible version:
Our class made a survey on whether we need robots in our everyday life. Here is the result. Two thirds of us think we need robots, because they can help us with lots of everyday jobs and they can make life easier. But one third of us think we don’t need to have robots. They say robots cost too much and they can cause some unexpected problems. They also think robots can make people lazy.
I think that a robot can help with housework and make it possible for us to spend more time on something more important and exciting. So I would get a robot if possible.
2014-2015九年级上数学周测卷 姓名 成绩 一、 选择题（每小题4分，共40分） 1. 如图，矩形ABCD 的对角线AC=10，BC=8，则图中五个小矩形的周长之和为（ ） A.14 B.18 C.28 D.36 2. 使分式的值等于0的x 的值是( ) A -2 B 2 C ±2 D ±4 3.顺次连接一个四边形的各边中点，得到了一个矩形，则下列四边形中满足条件的是（ ） ①平行四边形;②菱形;③矩形;④对角线互相垂直的四边形. A.①③ B.②③ C.③④ D.②④ 4.已知一矩形的两边长分别为10 cm 和15 cm ，其中一个内角的平分线分长边为两部分，这两部分的长为（ ）A.6 cm 和9 cm B. 5 cm 和10 cm C. 4 cm 和11 cm D. 7 cm 和8 cm 5.如图，在矩形中，分别为边的中点.若，，则图中阴影部分的面积为（ ） A.3 B.4 C.6 D.8 第1题图 第5题图 第6题图 6.如图，菱形ABCD 的边长为4，过点A 、C 作对角线AC 的垂线，分别交CB 和AD 的延长线于点E 、F ，AE=3，则四边形AECF 的周长为（ ） A.22 B.18 C.14 D.11 7. 如图是一张矩形纸片， ，若将纸片沿折叠，使落在上，点的对应点为点，若，则（ ） A. B. C. D. 8. 已知m 是方程x 2-x-1=0的一个根，则代数式m 2-m 的值等于（ ） A 、 -1 B 、0 C 、1 D 、2 9. 某班同学毕业时都将自己的照片向全班其他同学各送一张表示留念，全班共送1035张照片，如果全班有x 名同学，根据题意，列出方程为( ) A x(x+1)=1035 B x(x-1)=1035 C x(x+1)=1035 D x(x-1)=1035 10. 关于的一元二次方程022=--k x x 有实数根，则( ) (A)＜1 (B)＞-1 (C)≥-1 (D)≤1 二、填空题（每小题4分，共24分） 11. 一元二次方程的解为：______. 12．.已知方程x 2+kx+3=0的一个根是-1，则k=______， 另一根为______. 13．已知，在四边形ABCD 中，90A B C ∠=∠=∠= ?，若添加一个条件即可判定该四边形是正方形，那么这个条件可以是 ____________. 14.如图，在菱形ABCD 中，∠B ＝60°，点E ，F 分别从点B ，D 同时以同样的速度沿边BC ，DC 向点C 运动.给出以下四个结论：① ; ② ∠∠; ③ 当点E ，F 分别为边BC ，DC 的中点时，△AEF 是等边三角形.上述正确结论的序号有 . 15.如图，矩形的两条对角线交于点，过点作的垂线，分别交 ，于点，，连接，已知△的周长为24 cm ，则矩形的周长是 cm. 16. 已知三角形两边长分别是2和9，第三边的长为一元二次方程 x 2 -14x+24=0的一个根，则这个三角第7题图
专项训练七 相似 一、选择题 1．两个相似三角形的面积比为1∶4，则它们的相似比为( ) A ．1∶4 B ．1∶2 C ．1∶16 D ．无法确定 2．如图，在△ABC 中，点D 在边AB 上，BD ＝2AD ，DE ∥BC 交AC 于点E ，若线段DE ＝5，则线段BC 的长为( ) A ．7.5 B ．10 C ．15 D ．20 第2题图 第3题图 第4题图 3．如图，下列条件不能判定△ADB ∽△ABC 的是( ) A ．∠ABD ＝∠AC B B ．∠ADB ＝∠AB C C ．AB 2＝A D ·AC D.AD AB ＝AB BC 4．如图，为估算学校旗杆的高度，身高1.6米的小红同学沿着旗杆在地面的影子AB 由A 向B 走去，当她走到点C 处时，她的影子的顶端正好与旗杆的影子的顶端重合，此时测得AC ＝2m ，BC ＝8m ，则旗杆的高度是( ) A ．6.4m B ．7m C ．8m D ．9m 5．如图，线段CD 两个端点的坐标分别为C (1，2)、D (2，0)，以原点为位似中心，将线段CD 放大得到线段AB ，若点B 的坐标为(5，0)，则点A 的坐标为( ) A ．(2，5) B ．(2.5，5) C ．(3，5) D ．(3，6) 第5题图 第6题图 第7题图 第8题图 6．(舟山中考)如图，矩形ABCD 中，AD ＝2，AB ＝3，过点A ，C 作相距为2的平行线段AE ，CF ，分别交CD ，AB 于点E ，F ，则DE 的长是( ) A. 5 B.136 C ．1 D.5 6 7．(丽水中考)如图，已知⊙O 是等腰Rt △ABC 的外接圆，点D 是AC ︵ 上一点，BD 交AC 于点E ， 若BC ＝4，AD ＝4 5 ，则AE 的长是( ) A ．3 B ．2 C ．1 D ．1.2 8．★若两个扇形满足弧长的比等于它们半径的比，则称这两个扇形相似．如图，如果扇形AOB 与扇形A 1O 1B 1是相似扇形，且半径OA ∶O 1A 1＝k (k 为不等于0的常数)．那么下面四个结论：①∠AOB ＝∠A 1O 1B 1；②△AOB ∽△A 1O 1B 1；③AB A 1 B 1 ＝k ；④扇形AOB 与扇形A 1O 1B 1的面积之比为k 2.成立 的个数为( ) A ．1个 B ．2个 C ．3个 D ．4个 二、填空题 9．(衡阳中考)若△ABC 与△DEF 相似且面积之比为25∶16，则△ABC 与△DEF 的周长之比为________． 10．如图，直线l 1、l 2、…、l 6是一组等距的平行线，过直线l 1上的点A 作两条射线，分别与直线l 3、l 6相交于点B 、E 、C 、F .若BC ＝2，则EF 的长是________．
译林英语五年级上册第三单元检测试题 班级：姓名： 听力部分（30分） 一、听录音选出你听到的单词。（听两遍）（8分） ( )1.A.swing B. woman C. wing ( )2.A.hard B. arm C. park ( )3.A.look B. foot C. forest ( )4.Aleg B. lake C. long ( )5.A,green B. grape C. give ( )6.A.mouth B. mother C. Monday ( )7.A.find B. give C. great ( )8.A.five B. fifty C. finger 二、听录音，根据所听短文内容判断下列句子是否正确，正确的用“T”,错误的 用“F”。（听两遍）（10分） ( )1.I have two animal friends. ( )2.They can run and jump ( )3.They have big eyes and big ears ( )4.They have long legs and long arms. ( )5.They have big tails. 三、听录音，补全对话。（听两遍）（12分） 1.--Does it have ? --No, it doesn’t. But it has a short . 2.--Are her long? --No, . 3.-- you have any animal friends? --Sure. 4. --Where is your ? --It’s on the .
九年级语文周测11月23日 姓名分数 一、基础·运用 “自强不息”是中华民族生生不息的力量源泉。某校初三年级开展以“君子自强不息”为主题的综合实践活动，诚挚邀请你参与到活动中来! 【追本溯源明“自强”】 “天行健，君子以自强不息。”这是《易传》开篇中的一句话，讲的是天道刚健，周而复始，永无止息，启示人们应效法天道，自强不息。 自强不息，首先强调的是刚健有为，积极进取。孔子曰：“三军可夺帅也，匹夫不可夺志也。”他为了自己的人生追求，“学而不厌，诲人不倦”“【甲】”，成为坚忍刚毅、奋斗不止精神的典范。 图强求变、创新超越也是自强不息精神应有之义。“刚健笃实，辉光日新”“【乙】”，这些(zhēn)言都体现出古人对创新的追求，而中华民族发展史上的一个个发明创造、一次次革故鼎新，则是自强不息精神在创新实践中结出的累累硕果。 自强不息的精神还表现为无私忘我的人生境界。古代文人恪．守孔孟之道，将“君子以自强不息”的内涵诠释得生动而透彻。尽管仕途多舛，他们也依旧高洁自守不同流合污；虽然身遭贬谪，他们却依然高声吟唱“【丙】”；即使身居偏远的江湖，他们也要尽其所能造福一方百姓。 1.文段中画横线字的笔顺、根据拼音写的汉字、加点字的读音，全都正确的一项是( ) A. “匹”的第二笔为“”箴言kè B. “匹”的第二笔为“”箴言kè C. “匹”的第二笔为“”真言gè D. “匹”的第二笔为“”真言gè 2.小明要向同学们解释“自强不息”的意思，他从字典中查阅了“息”的词义。下面是其 中的三个解释：①呼吸时进出的气：②停止；③休息。请你帮助他解释“自强不息” 的意思。(限15字以内) 答： 3.将下面三句话分别填入文中【甲】【乙】【丙】处，正确的一项是（）
周测(2.1～2.4) (时间：45分钟满分：100分) 一、选择题(每小题3分，共30分) 1．已知⊙O是以坐标原点O为圆心，5为半径的圆，点M的坐标为(－3，4)，则点M与⊙O的位置关系为(A) A．M在⊙O上B．M在⊙O内 C．M在⊙O外D．M在⊙O右上方 2．如图，△ABC的顶点均在⊙O上．若∠A＝36°，则∠BOC的度数为(D) A．18° B．36° C．60° D．72° 3．如图，AB是⊙O的直径，点C，D在⊙O上，且点C，D在AB的异侧，连接AD，OD，OC.若∠AOC＝70°，且AD∥OC，则∠AOD的度数为(D) A．70° B．60° C．50° D．40° 4．如图，在半径为5的⊙O中，弦AB＝6，OP⊥AB，垂足为P，则OP的长为(C) A．3 B．2.5 C．4 D．3.5 第6题图 5．如图，点A，B，C，P在⊙O上，CD⊥OA，CE⊥OB，垂足分别为D，E，∠DCE＝40°，则∠P的度数为(B) A．140° B．70° C．60° D．40°
6．如图，四边形ABCD 内接于⊙O，AB ＝AD ，连接BD.若∠C＝120°，AB ＝2，则△ABD 的周长是(C) A ．3 3 B ．4 C ．6 D ．8 7．如图，⊙O 的半径为5，AB 为弦，点C 为AB ︵ 的中点．若∠ABC＝30°，则弦AB 的长为(D) A.12 B ．5 C.532 D ．53 8．如图，点A ，B ，C ，D 在⊙O 上，∠AOC＝140°，点B 是AC ︵ 的中点，则∠D 的度数是(D) A ．70° B ．55° C ．35.5° D ．35° 9．一条弦将圆分为1∶5两部分，则这条弦所对的圆周角的度数为(C) A ．30° B ．150° C ．30°或150° D ．不能确定 10．如图，AB 是⊙O 的直径，AB ＝8，点M 在⊙O 上，∠MAB＝20°，N 是MB ︵ 的中点，P 是直径AB 上的一动点，若MN ＝1，则△PMN 周长的最小值为(B)
Unit 3 单元测试题 Ⅳ. 单项选择(每小题1分，共10分) ( )16. You can walk to ______ subway station. It’s not far. A. the B. a C. an D. 不填 ( )17. It’s easy for me ______ English. A. speak B. speaks C. to speak D. speaking ( )18. I ______ my bike to school every day. A. ride B. show C. drive D. stop ( )19. This hat is too old. I want a ______ one. A. clean B. long C. big D. new ( )20. It takes me 25 minutes ______ to the club by bus. A. to go B. going C. go D. goes ( )21. —______ is it from your home to the clothes store —Three kilometers. A. How far B. How long C. How much D. How old ( )22. There are no ______ now, so we can’t cross the river. A. boats B. cars C. trains D. subways ( )23. My brother and I ______ sports every day. I love ______ tennis, but he doesn’t. A. do; play B. do; to play C. does; play D. does; to play ( )24. —Does Mike always drive a car to the radio station —______. He goes there by bike. A. Yes, he does B. Yes, he is C. No, he isn’t D. No, he doesn’t ( )25. —Have a good time on the weekend. —______. A. You, too B. Yes, please C. Sounds good D. I’m not sure Ⅴ. 完形填空(每小题1分，共10分) Mike is 6 years old. 26 parents work in Beijing. They are very 27 and don’t have t ime to look after (照顾) him. Mike 28 with his grandparents in a small village. Mike’s parents work 29 a factory (工厂). They live far from the factory. 30 about 11 kilometers from their home to the factory. So they have to 31 early in the morning. They usually 32 home at half past six in the morning. They walk to the bus station and 33 the No. 10 bus to the subway station. Then they go to the factory by 34 . It takes them about an hour to go to work. The trip to their factory is really tiring (累人的), 35 they like their jobs very much. ( )26. A. His B. Her C. My D. Your ( )27. A. free B. busy C. interesting D. boring ( )28. A. helps B. plays C. lives D. talks ( )29. A. to B. with C. in D. from ( )30. A. It’s B. He’s C. She’s D. I’m ( )31. A. brush teeth B. eat C. get up D. exercise ( )32. A. lose B. leave C. get D. find ( )33. A. drive B. on C. take D. by ( )34. A. bus B. train C. car D. subway ( )35. A. because B. so C. but D. and Ⅵ. 阅读理解(每小题2分，共20分) A 易读度★☆☆☆☆ Bill is a teacher. He goes to work from Monday to Friday every week. Usually he gets up at six in the morning. After breakfast, he takes a bus to work. He is a . teacher, so he often plays sports with his students. He has classes every day. Two are in the morning and two are in the afternoon. In the evening he usually eats dinner at home and then he watches TV. He thinks he has a happy life. 根据材料内容判断正(T)误(F)。
第二十七章相似周周测7 一、选择题 1．观察下列每组图形，相似图形是（） A. B. C. D. 2．用一个10倍的放大镜看一个15°的角，看到的角的度数为（） A．150°B．105°C．15°D．无法确定大小 3．已知四条线段的长度分别为2，x－1，x＋1，4，且它们是成比例线段，则x的值为（） A．2 B．3 C．－3 D．3或－3 4．如图，在大小为4×4的正方形网格中，是相似三角形的是（） A．①和②B．②和③C．①和③D．②和④ 5．如图，在△ABC中，DE∥BC，∠ADE＝∠EFC，AD∶BD＝5∶3，CF＝6，则DE的长为（） A．6 B．8 C．10 D．12 第5题图第6题图第7题图 6．如图，点P在△ABC的边AC上，要判断△ABP∽△ACB，添加一个条件，不正确的是（） A．∠ABP＝∠C B．∠APB＝∠ABC C. AP AB＝ AB AC D. AB BP＝ AC CB 7．如图，在?ABCD中，点E是边AD的中点，EC交对角线BD于点F，则EF∶FC等于（） A．3∶2 B．3∶1 C．1∶1 D．1∶2 8．如图，Rt△ABC中，∠ACB=90°，AC=4，BC=6，以斜边AB上的一点O为圆心所作的半圆分别与AC、BC相切于点D、E，则AD为（） A．2.5 B．1.6 C．1.5 D．1
第8题图第9题图 9．如图，在?ABCD中，AC，BD相交于点O，点E是OA的中点，连接BE并延长交AD 于点F，已知S△AEF=4，则下列结论：①AFFD=12；②S△BCE=36；③S△ABE=12；④△AEF～△ACD，其中一定正确的是（） A．①②③④ B．①④C．②③④D．①②③ 10．如图，矩形ABCD中，AB＝3，BC＝4，点P从A点出发，按A→B→ C的方向在AB 和BC上移动，记PA ＝x，点D到直线 PA的距离为y， 则y关于x的函数图象大致是（） A B C D 二、填空题 11．如图，在△ABC中，MN∥BC 分别交AB， AC 于点 M，N. 若AM＝1，MB＝2，BC＝3，则MN的长为. 第11题图第12题图第13题图第14题图 12．如图，已知零件的外径为25 mm，现用一个交叉卡钳(两条尺长AC和BD相等，OC＝OD)量零件的内孔直径AB.若OC∶OA＝1∶2，量得CD＝10 mm，则零件的厚度x＝mm. 13．如图，放映幻灯时，通过光源，把幻灯片上的图形放大到屏幕上．若幻灯片到光源的距离为20 cm，到屏幕的距离为40 cm，且幻灯片中图形的高度为6 cm，则屏幕上图形的高度为cm． 14．经过三边都不相等的三角形的一个顶点的线段把三角形分成两个小三角形，如果其中一个是等腰三角形，另外一个三角形和原三角形相似，那么把这条线段定义为原三角形的“和谐分割线”．如图，线段CD是△ABC的“和谐分割线”，△ACD为等腰三角形，△CBD 和△ABC相似，∠A＝46°，则∠ACB的度数为． 三、解答题 15．（10分）如图，A、B、C、P四点均在边长为1的小正方形网格格点上．
1c 0211c 0211c 0211c 021 初三(上)数学周测一 班级: 姓名: 一. 选择题(每题3分, 共24分) 1. 下列函数中属于二次函数的是（ ） A ．y=x （x +1） B ．x 2y=1 C ．y=2x 2﹣2（x 2+1） D ．y= 2 ．x 的取值范围是( ) （A ）x ≥0 （B ）x ≠4 （C ）x ≥4 （D ）x ＞4 3．实数a ，b 在数轴上的对应点的位置如图所示，如果ab = c ，那么实数c 在数轴上的对应点的 位置可能是( ) （A ） （B ） （C ） （D 4．如图，直线a ∥b ，直线c 与直线a ，b 分别交于点A ， 点B ，AC ⊥AB 于点A ，交直线b 于点C ．如果∠1 = 34°， 那么∠2的度数为( ) （A ）34° （B ）56° （C ）66° （D ）146° 5．将抛物线y = x 2向上平移2个单位后得到新的抛物线的表达式为( ) A ．22y x =+ B ．22y x =- C ．()2 2y x =+ D ．()2 2y x =- 6. 一枚质地均匀的正方体骰子，其六个面分别刻有1、2、3、4、5、6六个数字，投掷这个骰子一次，则向上一面的数字不小于3的概率是( ) A ． 21 B ． 31 C ．32 D.6 1 7．当二次函数249y x x =++取最小值时，x 的值为( ) A ．2- B ．1 C ． 2 D ．9 a b c A B C 1 2b 1a 021
8．二次函数y =ax 2 +bx +c （a ≠0）的图象如图所示，则下列结论中正 确的是( ) A ．a ＞0 B ．当 -1＜x ＜3时，y ＞0 C ．c ＜0 D ．当x ≥1时，y 随x 的增大而增大 二. 填空(每题3分, 共24分) 9．抛物线22x y -=向上平移5个单位后的解析式为 . 10．函数1 2 y x =-的自变量x 的取值范围是 . 11．抛物线y=2x 2﹣1的顶点坐标是 ． 12. 抛物线y=2(x+1)2,当x __ 时 y 随着x 的增大而增大 16．在平面直角坐标系xoy 中，直线2x =和抛物线2 y ax =在第一 象限交于点A , 过A 作AB x ⊥轴于点B .如果a 取1，2，3，…，n 时对应的△AOB 的面积为123S S S ，，，，n S ， 那么1S =_____；123n S S S S ++++= _____．
3.8圆内接正多边形 一、选择题 1.正多边形的中心角是36°，那么这个正多边形的边数为（） A. 10 B. 8 C. 6 D. 5 2.正六边形的半径是6，则这个正六边形的面积为（） A. 24 B. 54 C. 9 D. 54 3.如图，四边形ABCD是圆内接四边形，E是BC延长线上一点，若∠BAD＝105°，则∠DCE 的大小是 A. 115° B. l05° C. 100° D. 95° 4.如图，四边形ABCD内接于⊙O，若∠BCD=110°，则∠BOD的度数为（） A. 35° B. 70° C. 110° D. 140° 5.如图，四边形ABCD是⊙O的内接四边形，若∠B=110°，则∠ADE的度数为（） A. 55° B. 70° C. 90° D. 110° 6.如图是一个正八边形，图中空白部分的面积等于20，则阴影部分的面积等于（）
A. 10 B. 20 C. 18 D. 20 7.如图，四边形ABCD是圆内接四边形，若∠BAD ＝105°，则∠BCD的度数是（） A. 105° B. 95° C. 75° D. 60° 8.已知如图，四边形ABCD内接于⊙O，若∠BOD=100°，则∠BCD的度数是（） A. 50° B. 80° C. 100° D. 130° 9. 如图，四边形ABCD是⊙O的内接四边形，∠B=70°，则∠D的度数是（） A. 110° B. 90° C. 70° D. 50° 10.已知正方形的内切圆O半径为2，如图，正方形的四个角上分别有一个直角三角形，如果直角三角形的第三边与圆O相切且平行于对角线．则阴影部分的面积为（）
小学英语人教三下Unit 3测试卷 听力部分 一、听录音，在相应的图片下打“√”。每小题听一遍。（10分） 1. A. B. 2. A. B. （）（）（）（） 3. A. B. 4. A. B. （）（）（）（） 5. A. B. （）（） 二、听录音，判断下列图片与所听内容是（√）否（×）相符。每小题听两遍。（10分） （）1. （）2. （）3. （）4.
（）5. 三、听录音，给下列句子标序号。每个句子听两遍。（10分）（）It has a big body and a small head. （）And it has long legs. （）Come here, children! Look at the bird. （）It has a short tail. （）Wow! It’s so tall. 笔试部分 四、选出下列单词的对应词，只填序号。（8分） A. thin B. short C. tall D. small 1. big______ 2. short______ 3. long______ 4. fat______ 五、单项选择。（15分） （）1. Look ______ me! A. on B. at C. so （）2. I ______ big eyes and small ears. A. has B. with C. have （）3. The elephant ______ two big ears. A. have B. has C. is
（）4. It has ______ long nose. A. a B. / C. an （）5. You ______ tall. I ______ short. A. are；is B. are；am C. is；am 六、根据句意，选择相应的图片。（15分） （）1. It has big ears and a long nose. A. B. （）2. It’s big and fat. A. B. （）3. It has a long tail and small ears. A. B. （）4. It’s tall and thin. A. B. （）5. It’s small. A. B.
C ?与圆相交的直线是圆的对称轴 D ?与半径垂直的直线是圆的 6. 如图，已知。O 的半径为5,弦AB=6, M 是4B 上任意一点，则线段OM 的长可能是（） 7. 如图，在中，AB 二AC, D 、E 是斜边BC 上两点，且ZDAE 二45° ,将厶 ADC 绕点A 顺时针旋转90°后，得到△AFB,连接EF.下列结论中正确的 是 ____ ?（填序号）①AAED^AAEF ；②AE:BE = AD:CD ；③△八BC 的 面积等于四边形AFBD 的面积；④BE 2+DC 2=DE 2⑤BE+DC 二DE 其中正确的 是（ ）A.①②④B.③④⑤C.①③④D.①③⑤ 九年级数学周末练习（第2周） 班级： 姓名： 一、选择题 1.下列说法中正确的是（ ) A.直径是圆的对称轴 B.经过圆心的克线是圆的对称轴 对称轴 2.如图，AB 是OO 的直径，CD 是弦，CD 丄AB 于点E,则下列结 论小不一定成立的是（ A. ZCOE=ZDOE B. CE=DE C. OE=BE D. BD = BC 3.如图所示，的弦AB 垂直平分半径OG 则四边形 046是( A.正方形 B.长方形 C.菱形 D.以上答案都不对 4.如图，AB 是OO 的弦，半径OC 丄于点D,且AB=6cm, OD=4cm,贝ij DC 的长为（ ） A. 5cm B. 2.5cm C. 2cm D. lcm 5.如图，在以O 为圆心的两个同心圆中，大圆的弦AB 交小圆于C, ￡＞两点，AB C = 10cm, CD=6cm,则 4C 的长为( ) A. 0.5cm B. lcm C- 1.5cm D ? 2cm A. 2.5 B. 3.5 C. 4.5 D. 5.5 A B E D
九年级数学下册第三章圆周周测13（3.9）（无答案）（新版） 北师大版 一、选择题 1. 一个扇形的弧长是10πcm，面积是60πcm2，则此扇形的圆心角的度数是（） A. 300° B. 150° C. 120° D. 75° 2.已知一条弧长为，它所对圆心角的度数为，则这条弦所在圆的半径为（） A. B . C . D . 3.若一个扇形的半径是18cm，且它的弧长是12π cm，则此扇形的圆心角等于（） A. 30° B. 60° C. 90° D. 120° 4.如图，从一块直径是2的圆形硬纸片上剪出一个圆心角为90°扇形．则这个扇形的面积 为（） A. π B. π
C. π D. π 5.如图，在△ABC中，∠A=90°，AB=AC=2，以BC的中点O为圆心的圆弧分别与AB、AC相切于点D、E，则图中阴影部分的面积是（） A. B. C. D. 6.如图，在Rt△ABC中，∠C=90°，∠A=30°，AB=2．将△ABC绕顶点A顺时针方向旋转至△AB′C′的位置，点B，A，C′在同一条直线上，则线段BC扫过的区域面积为（） A. B. C. D. 7.如图，将一个半径为2的圆等分成四段弧，再将这四段弧围成星形，则该图形的面积与原来圆的面积之比为（）
A. B. C. D. 8.如图，直径AB为6的半圆，绕A点逆时针旋转60°，此时点B到了点B’，则图中阴影部分的面积是（） A. B. C. D. 9.如图，在边长为2的正方形内部，以各边为直径画四个半圆，则图中阴影部分的面积是（） A. 2 B. C. D. 1 10.如图所示，扇形AOB的圆心角120°，半径为2，则图中阴影部分的面积为（）
Unit3 Weather 一、从下列每组词汇中选出不同类的一项。 ( )1. A. rainy B. snowy C. swim D. windy ( )2. A. warm B. today C. hot D. cool ( )3. A. weather B. sunny C. cloudy D. snowy ( )4. A. London B. Beijing C. world D. New York 二、从下列每组单词中，选出一个画线部分的发音不同于其他三个的单词。( )1. A. farm B. warm C. car D. arm ( )2. A. tall B. ball C. far D. wall ( )3. A. bird B. first C. girl D. forty ( )4. A. cloudy B. outside C. soup D. about ( )5. A. music B. sunny C. lunch D. mum 三、按要求完成下列各题。（5分） 1. hot（对应词）____________ 2. cannot（缩写形式）____________ 3. sun （形容词）____________ 4. cool （对应词）____________ （形容词）____________ 1.__________ I have some soup 2. It’s _________. You can’t go outside. 3. Be___________! 4. It’s sunny. Can you_______ a kite with me 5. —What’s the_________ like today —It’s warm. 五、单项选择 ( )1. It’s warm ________ Hangzhou. A. up B. in C. of ( )2. I like watching the ________. A. a report B. report weather C. weather report ( )3. ________ some soup, Amy. A. To eat B. Have C. For
曹县博宇博雅中学初三数学第五次周测试题 时间120分钟满分120分出题人：初三数学组审核：孙明坤班级：姓名： 一、选择题（每题3分，共24分） 1.如图，电灯P在横杆AB的正上方，AB在灯光下的影长为CD，AB∥CD，AB=2m，CD=5m，点P到CD的距离是3m，则点P到AB的距离是（） A． m B． m C． m D． m （第1题图）（第3题图）（第5题图） 2.已知△ABC中，∠C=90°，AC=6，BC=8，则cosB的值是（） A. 0.6 B. 0.75 C. 0.8 D. 4 3 3.菱形ABCD的周长为20cm，DE⊥AB，垂足为E，sinA=，则下列结论正确的个数有（） ①DE=3cm；②BE=1cm；③菱形的面积为15cm2；④BD=2cm． A.1个 B.2个 C.3个 D.4个 4. 已知二次函数，当取任意实数时，都有，则的取值 范围是（） A． B． C． D． 5．如图，CD是⊙O的弦，直径AB过CD的中点M，若∠BOC=40°，则∠ABD= A. 40° B. 60° C. 70° D. 80° 6. 如图，直线x=2与反比例函数y=2 x 、y= 1 x 的图象分别交于A、B两点，若点 P是y轴上任意一点，则△PAB的面积是（）
A. 12 B. 1 C. 32 D. 2 7. 已知函数2(3)21y k x x =-++的图象与x 轴有交点．则k 的取值范围是( ) A. k<4 B. k ≤4 C. k<4且k ≠3 D. k ≤4且k ≠3 8. 如图所示，抛物线y=ax 2+bx+c 的顶点为B （﹣1，3），与x 轴的交点A 在点（﹣3，0）和（﹣2，0）之间，以下结论：①b 2﹣4ac=0，②2a ﹣b=0，③a+b+c ＜0；④c ﹣a=3，其中正确的有（ ）个． A. 1 B. 2 C. 3 D. 4 二，填空题（每题3分，共24分） 9. 如图，已知⊙O 内切于△ABC ，切点分别D 、E 、F ，若∠A=50°，则∠EDF=______． （第9题图） （第12题图） （第14题图） 10.抛物线y =(x ?1)2?1的顶点在直线y =kx ?3上，则k =______． 11. 一抛物线和抛物线y=﹣2x 2的形状、开口方向完全相同，顶点坐标是（﹣1， 3），则该抛物线的解析式为_______． 12. 如图，Rt △ABC 两个锐角顶点A ，B 在函数y=k x （x ＞0）的图象上，AC ∥x 轴，AC=2，若点A 的坐标为（2，2），则点B 的坐标为_______． 13. 已知二次函数，当取（≠）时，函数值相等，则当取 时，函数值y=______． 14. 如图，直线y ＝mx +n 与抛物线y ＝ax 2+bx +c 交于A （﹣1，p ），B （4，q ）两点，则关于x 的不等式mx +n ＜ax 2+bx +c 的解集是____． 三、解答题（共78分） 15、计算（8分） （1）2sin30°+4cos30°?tan60°﹣cos 245°
人教版九年级数学下册单元测试题全套 以下部分显示，全下载后图片能全部显示！人教版九年级数学下册单元测试题全套（含答案） （含期中期末试题，共6套） 第二十六检测卷 (120分，90分钟)题号一二三总分得分一、选择题(每题3分，共30分) 1．下面的函数是反比例函数的是( ) A．y＝3x－1B．y＝2(x)．y＝3x(1)D．y＝3(2x－1) 2．若反比例函数y＝x(k)的图象经过点(－2，3)，则此函数的图象也经过点( ) A．(2，－3)B．(－3，－3)．(2，3)D．(－4，6) 3．若点A(a，b)在反比例函数y＝x(2)的图象上，则代数式ab－4的值为( ) A．0B．－2．2D．－6 4．在一个可以改变体积的密闭容器内装有一定质量的某种气体，当改变容器的体积时，气体的密度也会随之改变，密度&rh;(单位：kg/3)与体积V(单位：3)满足函数关系式&rh;＝V(k)(k为常数，k≠0)，其图象如图，则当气体的密度为3kg/3时，容器的体积为( )
A．93B．63．33D．1.53 (第4题) 5．若在同一直角坐标系中，正比例函数y＝k1x与反比例函数y＝x(k2)的图象无交点，则有( ) A．k1＋k2＞0B．k1＋k2＜0．k1k2＞0D．k1k2＜0 6．已知点A(－1，y1)，B(2，y2)都在双曲线y＝x(3＋)上，且y1>y2，则的取值范围是( ) A．<0B．>0．>－3D．<－3 7．如图，在直角坐标系中，直线y＝6－x与函数y＝x(4)(x＞0)的图象相交于点A，B，设点A的坐标为(x1，y1)，那么长为y1，宽为x1的矩形的面积和周长分别为( ) A．4，12B．8，12．4，6D．8，6 (第7题) 8．函数y＝x(k)与y＝kx＋k(k为常数且k≠0)在同一平面直角坐标系中的图象可能是( ) 9．如图，在矩形ABD中，AB＝4，B＝3，点F在D边上运动，连接AF，过点B作BE⊥AF于E.设BE＝y，AF ＝x，则能反映y与x之间函数关系的大致图象是( ) (第9题) 10.如图，两个边长分别为a，b（a＞b）的正方形连在一起，三点，B，F在同一直线上，反比例函数y=在第一象
八年级英语下unit3单元测试卷 一、单项选择 (20分) 1. Here’s so much rubbish. Could you please ____________? A. give ou it B. give it out C. take out it D. take it out 2.---Could you please fold the clothes, Mary? ---__________. A. Yes, I could B. No, I couldn’t C. Yes, sure D. No, I won’t 3. ---Could you please sweep the floor? ---___________. I’m washing t he shirt. A. Yes, sure B. No problem C. Sorry, I couldn’t D. No, I can’t 4. ---Could you please _________your bike here? A. don’t stop B. not to stop C. not stop D. not stopping 5. ---Could I _________your bicycle? ---Sure, and you can _________for a week. A. borrow, borrow B. borrow, keep C. lend, lend D. lend, borrow 6. _________of the two boys is from America. They’re from Canada. A. Both B. Either C. Neither D. All 7. I won’t visit her this weekend. Jack won’t, _________. A. both B. either C. neither D. too 8. ---I didn’t get to school late this morning. ---__________. A. Me too B. Me neither C. Me either D. Neither was I 9. If you don’t put up the signs after school, ___________. A. so does Jim B. so will Jim C. neither does Jim D. neither will Jim 10. Mary will make a plan as soon as she ____________her homework. A. finishes B. finish C. will finish D. finished 11. ---I’m going to the shopping center. ---___________you’ re there, could you buy some fruit for me? A. When B. After C. While D. As soon as 12. The teacher always tells us _________time _______computer games . A.Don’t waste, to play B. Don’t waste, playing C. not to waste, to play D. not to waster, playing 13. __________ good grades, you should try to study harder. A. Get B. In order to get C. Getting D. Got 14. I’m going to take a vacation. Could you please __________me ____ _____some information about interesting places to travel? A. offer, to B. offer, for C. provide, with D. provide, for 15. ---Could I watch TV? ---No, you ________. You _________finish your homework first. A. can’t, must B. can’t, can C. couldn’t, must D. couldn’t, can 16. “ When did you come home _________school yesterday?” she asked me _________surprise. A. to, with B. from, with C. to, in D. from, in 17. Don’t _________your cut wet when doing chores, Henry. A. get B. make C. let D. keep 18. We should _________the windows open to __________fresh air in. A. keep, make B. keep, let C. make, make D. make, get 19. ---Do you mind _________your room? ---No, I’ll do that after finishing _________this article. A. clean, write B. clean, writing C. cleaning, write D. cleaning, writing 20. The harder you study, __________grades you’ll get. A. good B. better C. best D. the better