新世纪综合单元测试——Unit 1 Book 4
True or False
Directions: There are ten statements in this section. Numbers 1 to 6 are based on Text
A while the rest are based on Text B. （以text A习题为主）
1.Script: Man can only live passively in nature.
正确答案：F
2.Script: Man could change the shape and climate of the environment.
正确答案：T
3.Script: Mankind is paying more and more attention to obtaining irreplaceable natural resources.
正确答案：F
4.Script: In the author's eyes, more and more synthetic fabrics are good to human health.
正确答案：F
得分：0分
5.Script: Using solar energy is a good way to solve the "man-nature" problem.
正确答案：T
6.Script: The author advocates that man should care for Mother Nature.
正确答案：T
7.Script: Although there isn't too much difference between the African grassland environment of 1.5 million years ago and that of today, there were many more animals at that time which are extinct today.
正确答案：T
8.Script: The author feels uneasy about promoting wildlife conservation because much of the world's biodiversity exists in poor nations.
正确答案：T
9.Script: The funds to protect wildlife should come from the poor countries' governments.
正确答案：F
10.Script: The funds from the world's richest nations would be a great contribution to the future of human beings and all life on Earth.
正确答案：T
Directions: Each of the following sentences is provided with four choices. Choose the one that best completes the sentence.
31. Perhaps to ____ him, his father sent him to Admiral Farragut Academy in New Jersey.
A. apprentice
B. demand
C. require
D. discipline
正确答案：D
32. The noise of traffic is a constant irritant to city ____.
A. houskeepers
B. habitation
C. dwellers
D. stay
正确答案：C
33. The American people are willing to pay a price for energy ____.
A. independence
B. dependence
C. independent
D. dependent
正确答案：A
34. This plant is already conditioned to the northern ____.
A. climate
B. atmosphere
C. rain
D. evaporation
正确答案：A
35. The troop made good their ____ from the occupied city.
A. turn
B. retreat
C. yield
D. escape
正确答案：B
36. Freedom has always been the life force of Western ____.
A. nurture
B. cultivation
C. civilization
D. program
正确答案：C
37. He had a fall, which was ____ of his downfall.
A. miserable
B. unfortunate
C. ominous
D. gloomy
正确答案：C
38. Glass is proving to be a very valuable ____ in the modern world.
A. substance
B. matter
C. affair
D. event
正确答案：A
39. Some of the new ____ dress materials do not crush.
A. analytic
B. sysytematic
C. sympathetic
D. synthetic
正确答案：D
40. He has found that smoke and ____ gases can be transported swiftly up through the atrium.
A. sweet
B. toxic
C. strong
D. dense
正确答案：B
41. He launched a new business ____ when he was 30 years old.
A. endurance
B. envelope
C. enterprise
D. entertain
正确答案：C
42. Life appears to be the most complex phenomenon in the ____.
A. earth
B. universe
C. sphere
D. surrounding
正确答案：B
43. The people fear not death, why ____ them with it?
A. persuade
B. convince
C. threaten
D. tempt
正确答案：C
44. But then, just as this almost flawless operation was nearing completion, ____ struck.
A. incident
B. trifle
C. event
D. disaster
正确答案：D
45. I'd always understood these ____ girls were brought up modestly behind the veil.
A. oriental
B. western
C. orientation
D. orient
正确答案：A
46. One single slip brings ____ regret, and looking back, your whole life has passed away.
A. temporary
B. instant
C. spontanious
D. eternal
正确答案：D
47. That important personage was not ____ present to receive his guests.
A. not yet
B. so yet
C. as yet
D. no yet
正确答案：C
48. Afterwards, they walked home saturated with rain and covered ____ with mud.
A. from foot to head
B. from head to foot
C. from outside to inside
D. from inside to outside
正确答案：B
49. Here is a military base. It's ____ to tourists.
A. within limits
B. off limits
C. without limit
D. limitation
正确答案：B
50. That mad man had to ____ a chair, for he had hurt several persons.
A. tie to
B. connect to
C. be related to
D. be tied to
正确答案：D
51. As adults, we do not have the same exposure to the language, even if we ____ a foreign country.
A. live
B. stay
C. reside in
D. live on
正确答案：C
52. I will try to ____ this contention in Parts III and IV of this study.
A. justify
B. justice
C. abuse
D. reckon
正确答案：A
53. It is advisable to keep a little food in ____ in case of emergency.
A. conserve
B. reserve
C. preserve
D. order
正确答案：B
54. He did not ____ his search for improving his understanding of these puzzles.
A. throw
B. give out
C. abandon
D. send
正确答案：C
55. ____, the little girl could help her mother with some housework.
A. Young as is she
B. Young as she is
C. As is she young
D. As she is young
正确答案：B
56. We were delayed by heavy trucks ____ onto the ship.
A. to be loaded
B. load
C. being loaded
D. to load
正确答案：C
57. ____ in a recent science competition, the three students were awarded scholarships totaling $21,000.
A. Judged the best
B. To be judged the best
C. Judging the best
D. Having judged the best
正确答案：A
58. No one had told Smith about ____ a lecture the following day.
A. there was
B. there would be
C. there be
D. there being
正确答案：D
59. ____ in the United States, St. Louis has now become the 24th largest city.
A. The fourth biggest city it was
B. Being the fourth biggest city
C. It was once the fourth biggest city
D. Once the fourth biggest city
正确答案：D
60. I was listening to the music, ____ I didn't hear the knock at the door.
A. in the result that
B. with the result that
C. the result was that
D. resulting that
正确答案：B
新世纪综合单元测试——Unit 2 Book 4
True or False
1.Script: Gross domestic product per capita doubled from 1950 to 2000 in the United States alone.
正确答案：F
2.Script: Americans are found to be happier than they were in 1946.
正确答案：F
3.Script: Easterlin demonstrated that when it came to developed countries, there existed a correlation between a nation's income level and its citizens' happiness.
正确答案：F
4.Script: The fast assimilation of technological progress makes the question of technology's impact more complicated.
正确答案：T
5.Script: Current comments on technology have mostly concentrated on the bad effects of technology on our human relationships rather than particular, harmful technologies.
正确答案：T
6.Script: Privacy has become increasingly vulnerable in a world of linked databases. 正确答案：T
7.Script: There are as many people who are for technology as those who are against it. 正确答案：T
8.Script: Doctors today have become "good learners" as well as "thinkers".
正确答案：F
9.Script: Nowadays, doctors tend to rely on the data provided by machines to judge patients' physical condition rather than diagnose their illness by traditional and more comprehensive methods.
正确答案：T
10.Script: Technology, which is neutral, depends on what we want to do with technology.
正确答案：T
Directions: Each of the following sentences is provided with four choices. Choose the one that best completes the sentence.
31. We have a relationship infinitely ____ to those of many of our friends.
A. excellent
B. superior
C. primary
D. prominent
正确答案：B
32. I was annoyed, indeed _________, over what happened.
A. satisfied
B. terrified
D. scared
正确答案：C
33. The pocket-picker gave back to the old lady the money he had stolen, for _______ sake.
A. conscience
B. consciousness
C. consideration
D. consequence
正确答案：A
34. Her music ____ moments of sudden quietness with moments of dramatic intensity.
A. changes
B. alternates
C. fluctuates
D. circles
正确答案：B
35. As he has ______ our patience, we'll not wait for him any longer.
A. torn
B. wasted
C. exhausted
D. consumed
正确答案：C
36. The grapes must be ____ to extract the juice.
A. forced
B. pressed
C. stressed
D. urged
正确答案：B
37. William Penn, the founder of Pennsylvania, _________ defended the right of every citizen to freedom of choice in religion.
A. vigorously
B. peculiarly
C. indifferently
D. inevitably
正确答案：A
38. The shape of China has usually been compared ________ a cock.
A. with
B. to
C. as
D. against
正确答案：B
39. The refugees managed to _______ despite the shortage of food and water.
A. endure
B. survive
D. substitute
正确答案：B
40. Improved consumer confidence is _______ to the economic recovery.
A. subordinate
B. cumulative
C. crucial
D. satisfactory
正确答案：C
41. A healthy life is frequently thought to be _______ with the open countryside and homegrown food.
A. tied
B. bound
C. associated
D. involved
正确答案：C
42. She remains confident and ______ untroubled by our present problems.
A. indefinitely
B. opitimisticly
C. infinitely
D. seemingly
正确答案：C
43. It is important to ____ between the rules of grammar and the conventions of written language.
A. determine
B. distinguish
C. explore
D. identify
正确答案：B
44. The police are trying to find out the _______ of the woman killed in the traffic accident.
A. identity
B. recognition
C. evidence
D. status
正确答案：A
45. At the party we found that shy girl ________ her mother all the time.
A. depending on
B. coinciding with
C. adhering to
D. clinging to
正确答案：D
46. The ______ of a cultural phenomenon is usually a logical consequence of some physical aspect in the life style of the people.
A. implementation
B. expedition
C. demonstration
D. manifestation
正确答案：D
47. In general, matters which lie entirely within state borders are the ______ concern of state governments.
A. extinct
B. excluding
C. excessive
D. exclusive
正确答案：D
48. One of his eyes was injured in an accident, but after a ______ operation, he quickly recovered his sight.
A. precise
B. considerate
C. delicate
D. sensitive
正确答案：C
49. Government reports, examination compositions, legal documents and most business letters are the main situations __________ formal language is used.
A. in which
B. on which
C. in that
D. at what
正确答案：A
50. No one can function properly if they are _______ of adequate sleep.
A. deprived
B. ripped
C. stripped
D. contrived
正确答案：A
51. The ______ cycle of life and death is a subject of interest to scientists and philosophers alike.
A. incompatible
B. exceeding
C. instantaneous
D. eternal
正确答案：D
52. We must encourage technological ____ if the company is to remain competitive.
A. backwardness
B. innovation
C. complication
D. blindness
53. In this poor country, survival is still the leading industry; all else is ___ .
A. entertainment
B. luxury
C. refreshment
D. happiness
正确答案：B
54. Britain has the highest ______ of road traffic in the world —over 60 cars for every mile of road.
A. popularity
B. intensity
C. density
D. prosperity
正确答案：C
55. His nationality isn't ____ to whether he is a good lawyer.
A. relevant
B. relative
C. reliable
D. real
正确答案：A
56. The ink has _____ through the thin paper onto the picture beneath.
A. soared
B. softened
C. soaked
D. sobbed
正确答案：C
57. The hopes, goals, fears and desires _____ widely between men and women, between the rich and the poor.
A. alter
B. shift
C. vary
D. transfer
正确答案：C
58. The car _______ well to the controls.
A. reflects
B. replies
C. responds
D. corresponds
正确答案：C
59. Older people tend to be quite ____ and a bit suspicious of any supposed advances.
A. radical
B. liberal
C. progressive
D. conservative
60. A love marriage, however, does not necessarily ________ much sharing of interests and responsibilities.
A. keep to
B. take over
C. hold on
D. result in
正确答案：D
新世纪综合单元测试——Unit 3 Book 4
True or False
1.Script: The author might think that after all the time he'd have some grasp of the situation, that he'd have some positive sense of assurance, of certainty, about knowledge and about life.
正确答案：F
2.Script: The more scientists search for the truth of nature, the more mysterious and unpredictable they find nature is. In a way, the more they learn, the more they know. 正确答案：F
3.Script: You buy one of these books, or perhaps you borrow it from the library. But you quickly find that your reading, rather than answering questions, only creates more of them.
正确答案：T
4.Script: Once the author had finished reading a book, he always felt that he need to read three more to gain a better grasp of the topic.
正确答案：T
5.Script: An infinite quest is a hopeless one, so that we should not learn, or that we should not read and write and think and talk, even that we should not try.
正确答案：F
6.Script: The truth, as they say, is out there, but, maybe, like the rainbow, we can never really grasp it, never hold it in our hands and truly know it.
正确答案：T
7.Script: Computers, as they excel in performing certain tasks, such as booking airline seats or sorting out bank accounts, are good at things that come naturally to human beings.
正确答案：F
8.Script: In seconds, computers can transfer large quantities of data from one terminal to another. Knowledge is far easier to move.
正确答案：F
9.Script: Cultural and language barriers can not elevate distrust to such an extent that an exchange of knowledge becomes almost impossible.
正确答案：F
10.Script: Limited by the problems of the human condition —lack of trust and resistance to change, true knowledge transfer still is a human phenomenon.
正确答案：T
Directions: Each of the following sentences is provided with four choices. Choose the one that best completes the sentence.
31. Head and chest ____ is checked on all children under two years of age.
A. circumstance
B. circumference
C. circuit
D. circle
正确答案：B
32. The reaction occurs mainly on the ____ between the two reacting phases.
A. interface
B. surface
C. interaction
D. introduction
正确答案：A
33. If there were no trade, each country would have to ____ its own production.
A. spend
B. consume
C. utilize
D. cost
正确答案：B
34. Walking deliberately to the summit, he glanced about him, in every direction, in ____ a cover.
A. quest
B. quest to
C. quest on
D. quest of
正确答案：D
35. From this moderation, ____, he learns two other lessons which complete his character.
A. mostly
B. likewise
C. similarly
D. likely
正确答案：B
36. He persuaded them to join him by the ____ magnetism of his personality.
A. bold
B. sheer
C. plain
D. direct
正确答案：B
37. If unsolved, the problem will sooner or later ____ our strategy and our foreign policy.
A. waver
B. ruin
C. destroy
D. paralyze
正确答案：D
38. Johnson, having failed to ____ a doctor, decided to take up teaching as his career.
A. qualify
B. qualify as
C. qualify for
D. qualify in
正确答案：B
39. Their frequent quarrels have ____ become a matter of common knowledge in the district.
A. hopelessly
B. doubtlessly
C. inevitably
D. doubtfully
正确答案：B
40. I cannot play the piano like I used to — my fingers have gone ____ from lack of practice.
A. stiff
B. numb
C. strong
D. powerful
正确答案：A
41. They stand erect and ____ in face of North China's violent wind and snow.
A. rigid
B. straight
C. unbending
D. inflexible
正确答案：C
42. It was natural that Thoreau should be widely regarded as a ____ of Emerson.
A. discipline
B. disciple
C. descendants
D. attendant
正确答案：B
43. With a last faint effort, for my ____ to it, and assisting it, he raised my hand to his lips.
A. handing
B. yielding
C. giving
D. producing
正确答案：B
44. He feared that they had never heard of necessity of self-denial and ____ from any
lips that could profit them.
A. humor
B. humility
C. human
D. humaneness
正确答案：B
45. The Commandant has nevertheless been compelled to ____ the problem.
A. look up
B. look out
C. look down
D. look into
正确答案：D
46. Every observer in a satellite program is ____ a pioneer of space travel.
A. on a way
B. in a way
C. with a way
D. by the way
正确答案：B
47. We need a swinging or sliding barrier that will ____ access into a car.
A. close off
B. close out
C. close on
D. close up
正确答案：A
48. Let me offer some suggestions that will help you ____ this wondrous world.
A. open to
B. open
C. open in
D. open up
正确答案：D
49. At the back of his mind was the ____ idea that he had met her before.
A. vague
B. very
C. view
D. vain
正确答案：A
50. He has decided to visit Japan with a view to enlarging his managerial ____.
A. know-why
B. know-how
C. know-what
D. know-where
正确答案：B
51. All the financial transactions not only must be posted, but also must be checked for ____.
B. accuracy
C. curiosity
D. exactness
正确答案：B
52. In the northern area, it is necessary to plant varieties which are outstandingly ____ to low winter temperature.
A. constant
B. resistant
C. reliable
D. proof
正确答案：B
53. With no one to keep order, the situation in the classroom was ____.
A. great
B. chaotic
C. good
D. rigid
正确答案：B
54. The bankruptcy of several small firms was the prelude to general economic ____.
A. collapse
B. college
C. colleague
D. collection
正确答案：A
55. After 30 years, the mature author was able to ____ on the work of his youth.
A. refine
B. reunite
C. remain
D. retain
正确答案：A
56. I climbed onto the roof to ____ an aerial and was seen by a neighbor, who reported seeing a burglar.
A. hold
B. set
C. load
D. install
正确答案：D
57. What I saw as I opened the box made me stop dead in my ____.
A. may
B. trace
C. tracks
D. treads
正确答案：C
58. The outdoor air had apparently taken away from him all tendency to ____
A. act to
B. act with
C. act in
D. act on
正确答案：D
59. Too many extracurricular activities ____ too much of our precious time for study.
A. take in
B. take up
C. take
D. take to
正确答案：B
60. You shouldn't ____ every wish of him just because he is a child.
A. comply to
B. comply with
C. comply for
D. comply into
正确答案：B
新世纪综合单元测试——Unit 4 Book 4
True or False
1.Script: A job can be classified as labor if a person has no interest in it and is compelled to take it by the necessity of earning a living and supporting his family.
正确答案：T
2.Script: Play is an activity that one enjoys doing as a pastime. Whether one plays or not is a matter of concern to society.
正确答案：F
3.Script: In the author's eye, the majority of people in the modern technological society are labourers rather than workers.
正确答案：T
4.Script: The development of technology and the division of labor have turned a large amount of enjoyable work into boring labor.
正确答案：T
5.Script: We are very happy to imagine a world in future where the majority of the workforce have as much time for play as the upper classes used to have in the past.
正确答案：F
6.Script: Workers seldom commit acts of violence because the aggression inside themselves, if any, would naturally turn into the motivation and determination to do their jobs well.
正确答案：T
7.Script: The profession we select reflects the kind of qualities we want to show in public.
正确答案：T
8.Script: The higher the educational background is required for an occupation, the
lower its status is.
正确答案：F
9.Script: Studies show that having the ability required by the job guarantees good work performance and career satisfaction.
正确答案：F
10.Script: If you are interested in your work, you are more likely to obtain career success and job satisfaction, and less likely to give it up.
正确答案：T
Directions: Each of the following sentences is provided with four choices. Choose the one that best completes the sentence.
31. His life as a river-boat pilot came to a sudden end. He was ______ to leave Mississippi at the outbreak of the war.
A. committed
B. compelled
C. ordered
D. attributed
正确答案：B
32. As a president, she has an annual _______ of 20,000 dollars gross.
A. wage
B. wages
C. salary
D. salaries
正确答案：C
33. Natural resources can be ______ as renewable and nonrenewable ones.
A. categorized
B. sorted
C. classified
D. organized
正确答案：C
34. He ______ his energies between running the company and playing tennis.
A. separates
B. shares
C. parts
D. divides
正确答案：D
35. The girl was ______ a shop assistant; she is now a manager in a large department store.
A. preliminarily
B. presumably
C. formerly
D. formally
正确答案：C
36. His answer was so confused that I could hardly make any ______ of it at all.
B. sense
C. idea
D. significance
正确答案：B
37. David likes country life and has decides to ______ farming.
A. go along with
B. go back on
C. go on for
D. go through with
正确答案：C
38. During her husband's presidency, Jacqueline Kennedy ______ the coordination of the White House restoration.
A. undertook
B. underestimated
C. underwent
D. undermined
正确答案：A
39. Everybody acts not only ______ external compulsion but also in accordance with inner necessity.
A. as
B. under
C. for
D. with
正确答案：B
40. She once again went through her composition carefully to ______ all spelling mistakes.
A. withdraw
B. abandon
C. eliminate
D. diminish
正确答案：C
41. In Scotland, as in the rest of the United Kingdom, ______ schooling begins at the age of 5 and ends at 16.
A. compelling
B. compulsory
C. forced
D. obliged
正确答案：B
42. Try to ______ to mind exactly what happened then you may find some clues.
A. remember
B. remind
C. mind
D. recall
43. The ______ of finding gold in California were good in the 1840s.
A. prospects
B. proposals
C. promises
D. privileges
正确答案：A
44. Since it is too late to change my mind now, I am ______ to carrying out the plan.
A. obliged
B. committed
C. engaged
D. resolved
正确答案：B
45. My friend does one thing one day and just the ______ the next. His behavior is inconsistent.
A. opposite
B. other
C. alternative
D. negative
正确答案：A
46. The thief _____ made a statement to the police, admitting his crime.
A. willingly
B. intentionally
C. voluntarily
D. deliberately
正确答案：C
47. We all has some of the cake, and I probably ate the _______ .
A. majority
B. most
C. minor
D. major
正确答案：A
48. You can hear the ______ of the crowd two miles away from the football team.
A. careers
B. pioneers
C. cheers
D. volunteers
正确答案：C
49. ___________ the circumstance, we must give up the plan at once.
A. In view
B. In view of
C. On view
D. Getting a view of
正确答案：B
50. The best way to deal with an impolite person is to _______ him.
A. neglect
B. omit
C. overlook
D. ignore
正确答案：D
51. It is recommended that the project ______ until all the preparations have been made.
A. is not started
B. will not be started
C. not be started
D. is not to started
正确答案：C
52. Joan's ______ experience in door-to-door sales was not rewarding.
A. before
B. previous
C. precious
D. previous to
正确答案：B
53. Although the traffic is not busy, he likes to drive at _______ speed.
A. moderate
B. fast
C. moral
D. spare
正确答案：A
54. In a ten-year ______ from 1976 to 1985, the total world fish catch increased by 29%.
A. decade
B. space
C. span
D. gap
正确答案：C
55. If a person talks about his weak points, his listener is expected to say something in the way of _______ .
A. assurance
B. encouragement
C. persusion
D. confirmation
正确答案：B
56. Some specialists point out that these are the features ______ of spoiled children.
A. typical
B. sign
C. traditional
D. tremendous
七年级数学（下册）第八章单元检测卷 一、选择题(每小题3分，共30分) 1．将方程2x ＋y ＝3写成用含x 的式子表示y 的形式，正确的是( ) A ．y ＝2x －3 B ．y ＝3－2x C ．x ＝y 2－32 D ．x ＝32－y 2 2．已知? ????x ＝1， y ＝4是方程kx ＋y ＝3的一个解，那么k 的值是( ) A ．7 B ．1 C ．－1 D ．－7 3．方程组???? ?x －y ＝1，2x ＋y ＝5 的解是( ) A.?????x ＝2，y ＝－1 B.?????x ＝－1，y ＝2 C.?????x ＝1，y ＝2 D.? ????x ＝2，y ＝1 4．小明到商店购买“五四”青年节活动奖品，购买20支铅笔和10本笔记本共需110 元，购买30支铅笔和5本笔记本需85元．设每支铅笔x 元，每本笔记本y 元，则可列方程组( ) A.?????20x ＋30y ＝110，10x ＋5y ＝85 B.? ????20x ＋10y ＝110，30x ＋5y ＝85 C.?????20x ＋5y ＝110，30x ＋10y ＝85 D.?????5x ＋20y ＝110，10x ＋30y ＝85 5．已知x ，y 满足方程组? ????x ＋6y ＝12，3x －2y ＝8，则x ＋y 的值为( ) A ．9 B ．7 C ．5 D ．3 6．若a ＋b ＋5＋|2a －b ＋1|＝0，则(b －a )2018的值为( ) A ．－1 B ．1 C ．52018 D ．－52018 7．已知关于x ，y 的二元一次方程组?????2ax ＋by ＝3，ax －by ＝1的解为? ????x ＝1， y ＝－1，则a －2b 的值是 ( ) A ．－2 B ．2 C ．3 D ．－3 8．为了丰富学生课外小组活动，培养学生动手操作能力，王老师让学生把5m 长的彩绳截成2m 或1m 的彩绳，用来做手工编织，在不造成浪费的前提下，你有几种不同的截法( )
2015学年第一学期高二数学《直线与圆》单元测试(2015-08-29) 班级___________ 姓名_________________ 一、选择题（每小题5分，共50分） 1.在同一直角坐标系中，直线y ax =与y x a =+的图象正确的是……………….( ) 2. 过点（1，2）且与原点的距离最大的直线方程是……………….( ) A.042=-+y x B. 052=-+y x C. 073=-+y x D. 053=-+y x 3. 若直线10x --=的倾斜角为α，则α的值是……………….( ) A ． 6π B ． 4π C ．3π D ．56π 4. 两直线330x y +-=与610x my ++=平行，则它们之间的距离为……………….( ) A ．4 B ． C D 5. 圆221:(1)(2)1C x y -+-=，圆222:(2)(5)9C x y -+-=，则这两圆公切线的条数为…….( ) A.1 B.2 C.3 D.4 6. 经过点()1,3且在两坐标轴上的截距互为相反数的直线方程是……………….( ) A ．4x y += B ．2y x =+ C ． 3y x =或4x y += D ．3y x =或2y x =+ 7. 直线xsinα+ycosα+1=0与直线xcosα－ysinα+2=0的位置关系是……………….( ) A 平行 B 相交但不垂直 C 垂直 D 视α的取值而定 8. 若过点(3,1)总可以作两条直线和圆22 (2)()(0)x k y k k k -+-=>相切，则k 的取值 范围是.( ) .A (0，2) .B (1，2) .C (2，+∞) .D (0，1)∪(2，+∞) 9. 圆心为1,32C ??- ??? 的圆与直线:230l x y +-=交于P 、Q 两点，O 为坐标原点，且满足0OP OQ ?=u u u v u u u v ，则圆C 的方程为……………….( ) A ．2215()(3)22x y -+-= B ．2215()(3)22 x y -++= C ．22125()(3)24x y ++-= D ．22125()(3)24 x y +++= 10. 已知圆22:1,O x y +=点()00,P x y 在直线20x y --=上,O 为坐标原点.若圆上存在点 Q 使得30OPQ ∠=o ,则0x 的取值范围为……………….( ) A ．[]1,1- B ．[]0,1 C ．[]0,2 D ．[]2,2-
方向与位置 ——用数对确定位置 教学目标： 1在具体情景中认识列与行，理解数对的含义，能用数对表示位置。2使学生亲身经历由具体的实物图到方格图的抽象过程，提高抽象思维能力，渗透坐标思想，发展空间观念。 3是学生体验用数对确定位置知识在生活中的应用，进一步增强用数学的眼光观察生活的意识。 教学重点：探究确定位置的方法，认识数对。 教学难点：理解抽象的“数对’,并能用数对准确地表示出方格图中某一物体的位置。 教学准备：练习卡、课件。 教学过程： 1用自己的方法确定位置 (出示课件图片) 师：同学们，这幅图片是某少年军校进行军训时拍摄的照片，在训练过程中大家都表现的非常积极，其中啊小强同学表现的最棒。仔细观察，小强在什么位置？想一想怎样能用准确简练的语言把小强的位置描述出来？ （教师巡视，并搜集学生的记录并展示） 师:你们觉得这几位同学描述的怎么样？谁来评价一下？ 生:评价
师：确实，1号和2号描述的比较简练，但不够准确，3号的比较准确，但不够简练，怎样能描述的又准确又简练呢？这就需要统一标准。2用列与行的方法确定位置。 （1）认识列和行的概念。 师：其实像这样确定位置的时候，我们通常用“列”与“行”来表示。那什么事列？什么是行？ 生：我知道，竖排就是列。横排就是行。 师:说得非常好。确定第几列要从观察者的左边往右数。现在我们都是观察者，指一指，哪是第一列的同学，确定第几行，要从前向后数。指一指，哪是第一行的同学? (学生上台指，教师演示课件，充分认识什么是列、什么是行。) （2）用列和行来描述位置。 师：现在你能用列和行来描述一下小强的位置吗？ 生：他在第3列第2行。 师：对！第3列第2行形成一个交叉点，小强的位置就在这。（让学生说出另两个同学的位置各是第几列第几行。） 师：对比这种描述方法和你们自己的描述，有什么感受？ 生1：非常简练。 生2: 非常准确。 师：的确，这种方法既准确又简练。 3用数对的方法确定位置。 （1）有实物图抽象到点子图，初步认识数对。
七年级数学(下册)第八章单元检测卷 一、选择题(每小题3分,共30分) 1.将方程2x ＋y ＝3写成用含x 的式子表示y 的形式,正确的就是( ) A.y ＝2x －3 B.y ＝3－2x C.x ＝y 2－32 D.x ＝32－y 2 2.已知???x ＝1 y ＝4 就是方程kx ＋y ＝3的一个解,那么k 的值就是( ) A.7 B.1 C.－1 D.－7 3.方程组???x －y ＝1 2x ＋y ＝5 的解就是( ) A 、???x ＝2y ＝－1 B 、???x ＝－1y ＝2 C 、???x ＝1y ＝2 D 、???x ＝2y ＝1 4.小明到商店购买“五四”青年节活动奖品,购买20支铅笔与10本笔记本共需110元, 购买30支铅笔与5本笔记本需85元.设每支铅笔x 元,每本笔记本y 元,则可列方程组( ) A 、???20x ＋30y ＝11010x ＋5y ＝85 B 、???20x ＋10y ＝11030x ＋5y ＝85 C 、???20x ＋5y ＝11030x ＋10y ＝85 D 、???5x ＋20y ＝11010x ＋30y ＝85 5.已知x ,y 满足方程组? ????x ＋6y ＝12 3x －2y ＝8则x ＋y 的值为( ) A.9 B.7 C.5 D.3 6.若a ＋b ＋5＋|2a －b ＋1|＝0,则(b －a )2018的值为( ) A.－1 B.1 C.52018 D.－52018 7.已知关于x ,y 的二元一次方程组???2ax ＋by ＝3ax －by ＝1的解为? ????x ＝1 y ＝－1则a －2b 的值就是( ) A.－2 B.2 C.3 D.－3 8.为了丰富学生课外小组活动,培养学生动手操作能力,王老师让学生把5m 长的彩绳截成2m 或1m 的彩绳,用来做手工编织,在不造成浪费的前提下,您有几种不同的截法( ) A.1种 B.2种 C.3种 D.4种 9.若关于x ,y 的二元一次方程组???x ＋y ＝5k x －y ＝9k 的解也就是二元一次方程2x ＋3y ＝6的解,则k
北师大版六年级数学上册第一单元测试卷及参考答案 一、填空。（19分） 1、画圆时，圆规两脚之间的距离为4厘米，那么这个圆的直径是（）厘米，周长是（）厘米，面积是（）平方厘米。 2．在等圆中，所有的直径都( )，所有的半径都( )，直径是半径的( )。 3．圆的直径扩大3倍，它的周长就扩大( )倍，它的面积就扩大( )倍。 4．长方形有( )条对称轴。正方形有( )条对称轴，等腰三角形有( )条对称轴，圆有( )条对称轴。 5．在一个边长为4分米的正方形里，画一个最大的圆，这个圆的直径为( )分米，半径为( )分米，周长为( )分米，面积为( )平方分米。 6．把一个圆平均分成若干份，可以拼成一个近似于长方形。长方形的长相当于圆的（），宽相当于圆的（）。 7．一个半圆形的花坛周长是30.84米，这个半圆形花坛的面积是( )。 二、判断。（6分） 1．一个圆的周长是它半径的2π倍。 ( ) 2．一个圆的直径，就是这个圆的对称轴。 ( ) 3．半圆的周长是与它等半径圆周长的一半。 ( ) 4．通过圆心的线段，叫做直径。 ( ) 5．半径是2厘米的圆，它的周长和面积相等。( ) 6．一个圆的直径等于一个正方形的边长，那么正方形面积小于圆的面积。( ) 三、选择。（7分） 1．一个圆的半径乘以π等于这个圆 ( )。 (1)周长的一半 (3)半圆的周长 2．在一个长6厘米，宽4厘米的长方形内画一个最大的圆，这个圆的面积是________平方厘米( ) (1)28.26 (2)19.625 (3)12.56 3．一个圆的半径1分米，它的半圆周长是________分米。 ( ) (1)3.14 (2)4.14 (3)5.14 4．一个圆的直径扩大6倍，它的面积就 ( ) (1)扩大6倍 (2)扩大36倍 (3)扩大12倍 5．下面三幅图的阴影部分的面积相比较，________的面积大。 ( ) (1)图(1)大 (2)图(2)大 (3)图(3)大 (4)同样大 6．如图，已知正方形面积是16平方分米，图中圆的面积是________平方分米。 ( ) (1)12.56 (2)6.28 (3)15.7
外研版英语《介词》单元测试题(含答案) 一、初中英语介词 1．To my great joy, my family is always ________me whatever I decide to do. A. behind B. to C. from D. against 【答案】 A 【解析】【分析】句意：令我高兴的是，无论我决定做什么，我的家人总是支持我。A：behind 在......之后，支持，赞成；B： to对； C： from 自从；D： against反对。根据 To my great joy, 可知家人都会支持我，故选A。 【点评】考查介词辨析。理解介词意思和用法，根据语境选择正确的介词。 2．My mother often says, "Stand tall like the sunflower and be proud who you are." A. of B. with C. at D. in 【答案】 A 【解析】【分析】句意：我妈妈经常说，像向日葵一样挺起胸膛，为自己感到骄傲。be proud of，固定搭配，为……骄傲，故选A。 【点评】考查固定搭配，注意be proud of的用法。 3．—Is that your headmaster? —You mean the man ________ blue? A. on B. with C. in 【答案】 C 【解析】【分析】句意：——那是你的校长吗？——你是指穿着蓝色衣服的男士吗？固定搭配，in+颜色，穿着……颜色衣服的人，A 在……上面，B 和……，表伴随，与题意不符，故选C。 【点评】考查介词辨析，注意in+颜色的用法。 4．We communicate _____ each other in many ways, such as by e-mail or by phone. A. on B. through C. in D. with 【答案】 D 【解析】【分析】句意：我们用很多方法相互联系，比如通过电子邮件或者电话。communicate with，与某人联系，与某人保持联系，固定搭配，故答案是D。 【点评】考查介词辨析，注意识记固定搭配communicate with的用法。 5．Beijing Expo 2019 opened to the public ________ 29th April. It will last over five months. A. at B. in C. on D. of 【答案】 C 【解析】【分析】句意：2019北京世博会于4月29日向公众开放。将持续五个多月。29th April 是具体的日期，在具体日期前应使用介词on。 【点评】考查介词辨析，注意在具体日期前应使用介词on。
<圆>单元测试卷 一、填空题．（30分） 1．（4分）通过_________并且_________都在_________的线段叫做直径． 2．（4分）当π取3.14时，16π=_________，48π=_________． 3．（4分）圆的对称轴有_________条，半圆形的对称轴有_________条． 4．（2分）画圆时，圆规两脚张开的距离是圆的_________． 5．（2分）圆的周长是直径的_________倍． 6．（4分）一个圆的直径是3分M，它的周长是_________，面积是_________． 7．（2分）用一条长9.42分M的铁丝围成的圆的面积是_________． 8．（4分）甲圆半径是2厘M，乙圆的半径是5厘M，甲圆周长和乙圆周长的比是_________，乙圆面积与甲圆面积的比是_________． 9．（2分）在一个周长是28厘M的正方形里画一个最大的圆，圆的面积是_________． 10．（2分）一个半圆的半径是10厘M，它的面积是_________． 二、判断．（对的在横线里画“√”，错的画“×”）（8分） 11．（2分）两个半圆一定可以拼成一个圆．_________． 12．（2分）圆的半径扩大3倍，它的面积也扩大3倍．_________． 13．（2分）周长相等的长方形、正方形和圆，面积最大的是正方形．_________． 14．（2分）圆周率表示圆的直径与周长的比率．_________． 三、选一选．（将正确答案的序号填在括号里）（6分） 15．（2分）π是（） A．有限小数B．循环小数C．无限循环小数D．无限不循环小数 16．（2分）周长相等的正方形和圆，它们的面积比是（） A．1：1 B．157：2 C．π：4 17．（2分）已知圆的半径是r，计算它的周长，正确的算式为（） A． πr+r B． πr+2r C． πr D．πr+2r 四、求下图阴影部分的面积．（单位：厘M）（12分）
议论文单元测试题及答案 一、单项选择题（本大题共30小题，每小题1分，共30分。在每小题列出的四个备选项中只有一个是符合题目 要求的，请将其代码填写在题后的括号内。错选、多选或未选均无分。） 1.《秋水》中，庄子用“吾在天地之间，犹小石小木之在大山”来说明宇宙无限而人的认识有限的道理，这种论 证方法是（） A.演绎法和例证法 B.例证法和对比法 C.对比法和类比法 D.类比法和演绎法 2.庄子《秋水》（节选）的主旨是（） A.阐发为政以德的政治道理 B.阐述清静无为的人生哲学 C.阐析人的认识有限的思想 D.阐明实行王道的根本措施 3.《寡人之于国也》中，孟子用“狗彘食人食而不知检，涂有饿莩而不知发”来揭露当时社会的贫富悬殊，这种 论证方法是（） A.演绎法 B.归纳法 C.类比法 D.对比法 4.《五代史伶官传序》的中心论点是（） A.“盛衰之理，虽曰天命，岂非人事哉” B.“满招损，谦得益” C.“忧劳可以兴国，逸豫可以亡身” D.“祸患常积于忽微，智勇多困于所溺” 5．下列四组词语中，最能体现《五代史伶官传序》中心旨意的一组是（） A．忧劳与逸豫 B．盛与衰 C．天命与人事 D．满与谦 6. 庄子用“壘空之在大泽”、“稊米之在大仓”、“毫末之在马体”来阐发宇宙无限、人的认识有限的哲理 , 这种论证方法是（） A. 例证法 B. 类比法 C. 对比法 D. 演绎法 7. 下列属于史论的文章是 ( ) A. 《秋水》 B.《五代史伶官传序》 c. 《寡人之于国也》 D.《赵武灵王胡服骑射》 8. 北宋诗文革新运动的文坛领袖是 ( ) A. 欧阳修 B. 司马光 c. 王安石 D. 柳宗元 9.胡适在《容忍与自由》中认为，缺乏容忍雅量的心理根源是（） A.年轻气盛 B.狂妄自大 C.喜同恶异 D.愚昧无知 10．《五代史伶官传序》的中心论点是（） A．满招损，谦得益 B．本其成败之迹，而皆自于人 C．忧劳可以兴国，逸豫可以亡身D．祸患常积于忽微，而智勇多困于所溺 11．《就任北京大学校长之演说》既肯定大学的宗旨是“研究高深学问”，又批评“求学为升官发财”的腐败风气，这种论证方法是（） A．演绎法B．例证法 C．类比法D．对比法 12．《吃饭》中，从吃饭想到结婚、想到政治，这种联想方式的基础是（） A．时间统一性B．地点统一性 C．相似性D．对比性 13.《吃饭》中，用音乐与烹调来阐发“和而不同”的治国道理，这种联想方式是（） A.时间统一性联想 B.对比联想 C.地点统一性联想 D.相似联想 14．爱因斯坦在《我的世界观》中所说的“宗教感情”，指的是（） A．对最深奥理性和最灿烂美的执着追求B．对占用了同胞的过多劳动而难以忍受 C．承认有一个能够赏罚一切的上帝存在 D．相信肉体死亡之后灵魂还会继续活着 15．从《我的世界观》看，爱因斯坦的政治理念是（） A．崇尚民主，反对专制B．人是为别人而生存的 C．全神贯注，献身科学D．不承认万能上帝存在 16.《就任北京大学校长之演说》中，蔡元培强调大学宗旨时所批评的不良风气是（） A.不正当娱乐泛滥 B.求学为升官发财 C.不尊重师长学友 D.不注重购置书籍 17梁启超在《论毅力》中引用孔子的话说：“譬如为山，未成一篑，止，吾止也。”这几句话被凝缩成的一个成语是（）
用数对确定位置的说课稿 望亭中心小学朱黎锋 一、说教材 1．教材内容 《用数对确定位置》是苏教版小学数学四年级下册第八单元P98——100的教学内容。 2．教材分析 本课安排的是用从生活中的电影院中位置的确定来引入数对的方法。教材呈现的例题是小军在教室的位置的问题情境，“用数对确定位置”是在第一学段已经学了上下、前后、左右以及第几排第几个的基础上进行学习的，是第一段学习内容的延续和发展。让学生用抽象的数对来表示位置，进一步发展学生空间观念，提高抽象思维能力，为今后进一步学习“图形与坐标”打下重要基础。3.教学目标 我是从知识与技能、过程与方法、情感、态度与价值观三个方面来设计本节课的教学目标 （1）、知识与技能：使学生在具体情境中认识列、行的含义，知道确定第几列第几行的规则，初步理解数对的含义，会用数对表示具体情境中的位置。（2）、过程与方法：使学生经历由具体的座位图到用列、行表示的平面图的抽象过程，进一步发展空间观念。 （3）、情感态度与价值观：使学生感受用数对表示位置的简洁性，体验数学与生活的密切联系，进一步增强用数学眼光观察生活的意识。 4．教学重、难点 从学生的知识结构和年龄特征出发，我理解本课的 教学重点：初步理解并掌握用数对表示位置的方法。 教学难点：能正确使用数对表示具体情境中物体的位置。 二、说教法、学法 1.教法：
本课时主要采用“探究式教学法”，辅以“情境教学法”进行教学。教学中，从生活中常见的电影院导入新课，借助找位置的实际问题，让学生逐步形成如何去确定位置，再让他们小组交流，从中巩固新知，学会写数对，从而发展学生的数学技能。 2.学法： 学生作为主体，在学习过程中的学生的参与状态和参与度是决定学习效果的重要因素。因此在学法的选择上体现出“玩中学——学中玩——在合作交流中学——学后交流合作”的思想。 三、说教学过程 教学过程： （一）、导入 提问：《题西林壁》这首诗学过吗？为什么诗人不识庐山真面目？ 指出：观察物体角度很重要。中国有句俗话“当局者迷，旁观者清”，就是告诉我们要以旁观者、局外人的视角观察人、事、物，才能更准确。 （出示电影院的座位图）提问：同学们，你们去看过电影吗？这是电影院一个厅的平面图，竖着的一排叫什么？横着的一排呢？（板书:竖排叫列，横排叫行） 老师想要观察这个厅所有的观众，应该站在什么位置？（银幕的位置） 指出：会选角度观察，我们今天的课就成功了一半。下面就进入我们的数学之旅吧！ （二）、认识数对 1、游戏——寻找幸运观众 （1）给出任务：电影院今天搞活动准备在这个电影院里选择三位观众免费观看，已找出两位，剩下的一位，让学生自己寻找。 （2）寻找幸运观众 第一步：漫无目的寻找。 第二步：根据提示寻找。教师给出提示（3，2），学生根据提示指一指幸运观众可能在的位置，教师用投影显示8个可能的位置。 第三步：根据视角寻找。进一步缩小范围，点击鼠标，寻找出幸运观众。
第一章 单元测试题1 一、填空题（每小题3分，共30分） 1． －2+2=__________, ＋2－(－2)=___ ___． 2．=-+--+-)3(2)3 2()31(________． 3．10_______5-=+- , 6________3 12-=--． 4．比－5大6的数是________． 5．+2减去－1的差是_______． 6．甲潜水员所在高度为－45米,乙潜水员在甲的上方15米处,则乙潜水员的所在的高度是__________． 7．把(－12)－(－13)+(－14)－(+15)+(+16)统一成加法的形式是________________,写成省略加号的形式是_________________,读作 ． 8．写出两个负数的差是正数的例子： ． 9．1－3+5―7+……+97―99 =____________． 10.结合生活经验．．．． ,对式子(+6)+(－9)=－3作出解释： ． 二、选择题（每题2分，共20分） 11．室内温度是15 0C,室外温度是－3 0C,则室外温度比室内温度低( ) (A) 12 0C (B) 18 0C (C) －12 0C (D) －18 0C 12．下列代数和是8的式子是（ ） (A) (－2)+(+10) (B) (－6)+(+2) (C) )212()215(-+- (D) )3 110()312(-+ 13．下列运算结果正确的是( ) (A) －6－6=0 (B) －4－4=8 (C) 1125.0811-=-- (D) 25.1)8 11(125.0=-- 14．数轴上表示―10与10这两个点之间的距离是( ) (A) 0 (B) 10 (C) 20 (D) 无法计算 15．2个有理数相加，若和为负数，则加数中负数的个数（ ）
人教版九年级数学《圆》单元测试题题号一二三四五总分得分一、选择题（每题3分，共18分）： 1.下列说法中，错误的是（ ）A.半圆是弧 B.半径相等的圆是等圆 C.过圆心的线段是直径 D.直径是弦 2.如图所示，点 A B C D E O AB=CD BE=DE D=128 、、、、都是上的点， ，，，则B D的度数为（ ） A.128° B.126° C.118° D.116° 3.如图，在圆O 中，AE 是直径，半径OC 垂直弦AB 于D ，连接BE ，若AB=27CD=1 ，,则BE 的长为（ ）A.5 B.6 C.7 D.8 4.如图，AB 是圆O 的直径，弦,30,6CD AB CDB CD ^D=°=，则图中阴影部分的面积为（ ） A.4p B.3p C.2p D.p ５.如图，AP 为O 的切线，P 为切点，若20,A D=°C 、D 为圆周上两点，且60PDC D=°则OBC D等于（） A.55° B.65° C.70° D.75° 6.在平面直角坐标系中，以点O 为圆心，半径为4的圆与Y 轴交于点B ，点A （8，4）是圆外一点，直线AC 与圆O 相切于点C ，与X 轴交于点D ，则点C 的坐标是（） A.(22,22)- B.128(,)55- C.(23,2)- D.1612(,)55 - （第2题）（第3题）（第4题）（第5题）（第6题） 二、填空题(每题3分，共18分）： 7.已知圆锥的底面半径为３cm ，高为4cm ，则圆锥的侧面积是 . 8.边长为12cm 的圆内接正三角形的边心距是cm.
9.如图，A 、B 、C 、D 是圆O 上的四个点， .AOB=58BDC=AB BC =若，则度.10.如图，四边形ABCD 内接于O ，若 ABD=62C=122ADB ，，则的度数 是.11.如图，AB 为O 的直径，弦CD AB ^于点E ，已知CD=6EB=1,，则O 的半径是. 12.如图，直线1(0)2 y x a a =- +>与坐标轴交于A 、B 两点，以坐标原点O 为圆心，２为半径的O 与直线AB 相离，则a 的取值范围是. （第9题图）（第10题图）（第11题图）（第12题图） 三、解答题（每题10分，共60分）： 13.如图，已知在以点O 为圆心的两个同心圆中，大圆的弦AB 交小圆于点C 、D. （1）求证：AC=BD ； （2）若大圆的半径R=10，小圆的半径r=8，且圆心到直线AB 的距离为6，求AC 的长. 14.如图，已知OA OB OC 、、是O 的三条半径，点C 是 AC 的中点，M N 、分别是OA OB 、的中点.求证：. MC NC =
单元测试(一) 一、积累与运用(30分) 1．下列词语中加点字注音完全正确的一组是(D)(3分) A．酝酿．(liáng)黄晕．(yùn) 发髻．(jì) 碣．石(jié) B．棱．镜(líng) 粗犷．(guǎng)嘹．亮(liáo) 贮．蓄(zhù) C．卖弄．(lòng) 池畦．(qí) 莅．临(lì) 草垛．(duǒ) D．花苞．(bāo) 竦．峙(sǒng)窠巢．(cháo) 静谧．(mì) (解析：A项“酝酿”的“酿”读作“niànɡ”，B项“棱镜”的“棱”读作“léng”，“卖弄”的“弄”读作“nònɡ”，“草垛”的“垛”读作“duò”。) 2．找出句中错别字并改正。(3分) (1)鸟儿将窠巢安在繁花嫩叶当中，高兴起来了，呼朋引伴地卖弄轻脆的喉咙，唱出宛转的曲子。(轻—清) (2)乡下去，小路上，石桥边，撑起伞慢慢走着的人；还有地里工作的农夫，披着蓑，带着笠的。(带—戴) (3)看，像牛毛，像花针，像细丝，密密地斜织着，人家屋顶上全茏着一层薄烟。(茏—笼) 3．下列句中加点成语使用不当的一句是(C)(3分) A．森林公园里到处都是呼朋引伴 ．．．．的游人。 B．他说话这样的不客气，真有点咄咄逼人 ．．．． C．夏天的雨总是淅淅沥沥 ．．．．下一阵，让人觉得酣畅极了。 D．墙边一排一排的板凳上，坐着花枝招展 ．．．．的女人，笑语盈盈而不休。 4．下列句子中没有语病的一项是(C)(3分) A．千百年来的先贤哲人们给我们留下了灿烂辉煌的许多精神财富。 B．据介绍，这次公车改革将涉及近5000多辆中央国家机关本级公车。 C．亚航QZ8501客机失事，再次引发了人们对马航MH370失联航班的追忆。 D．一些家长没有意识到“手机综合症”是一种病，而是采用简单粗暴的方式防止孩子不玩手机。 (解析：A项语序混乱，应将“许多”放到“灿烂辉煌”之前；B前后句意矛盾，删掉“近”或者“多”；D项否定不当，删掉“不”。) 5．根据上下文提示默写。(4分) (1)日月之行，若出其中；星汉灿烂，若出其里。 (2)潮平两岸阔，风正一帆悬。 (3)《闻王昌龄左迁龙标遥有此寄》中诗人将月亮人格化，以寄托自己离愁的诗句是：我寄愁心与明月，随君直到夜郎西。 (4)《天净沙秋思》中作者直抒胸臆，道出天涯游子之悲的句子是：夕阳西下，断肠人在天涯。 6．下面这段话的语序被打乱了，调整后语序正确的一项是(B)(3分) ①山尖全白了，给蓝天镶上一道银边。
第 11 章《全等三角形》单元检测题 一、选择题(每小题 4 分，共 40 分） 1.下列可使两个直角三角形全等的条件是 A. 一条边对应相等 B. 两条直角边对应相等 C.一个锐角对应相等 D. 两个锐角对应相等 2.如图，点 P 是△ ABC 内的一点，若 PB＝PC ，则 A .点 P 在∠ ABC 的平分线上 B.点 P 在∠ AC B 的平分线上 C.点 P 在边 AB 的垂直平分线上 D .点 P 在边 BC 的垂直平分线上 3. 如图， AD 是△ ABC 的中线， E， F 分别是 AD 和 AD 延长线上的A 点，且 DE DF ，连结BF，CE.下列说法：①CE＝BF；②△ABD 和△ ACD 面积相等；③BF ∥ CE；④△ BDF ≌△ CDE. 其中正确的有 E A. 1 个 B. 2 个 C. 3 个 D. 4个 C B 4. 在直角梯形 ABCD 中， AD∥ BC，∠ B=90 °，E 为 AB 上一点，且 ED D 平分∠ ADC ， EC 平分∠ BCD ，则下列结论中正确的有F A. ∠ADE =∠CDE B.DE ⊥ EC C.AD ·BC=BE·DE D.CD =AD +BC A 5. 使两个直角三角形全等的条件是C P A. 斜边相等 B. 两直角边对应相等O D B C. 一锐角对应相等 D. 两锐角对应相等 6.如图， OP 平分∠ AOB， PC⊥ OA 于 C， PD⊥ OB 于 D ，则 PC 与 PD 的大小关系 A. PC＞PD B.PC＝ PD C.PC＜ PD D.不能确定 7.用两个全等的直角三角形，拼下列图形：①平行四边形；②矩形；③菱形；④正方形；⑤等腰 三角形；⑥等边三角形，其中不一定能拼成的图形是 A E D A. ①②③ B. ②③ C. ③④⑤ D. ③④⑥ O 8.如图 ,平行四边形 ABCD 中 ,AC、 BD 相交于点 O,过点 O 作直线分 别交于 AD 、 BC 于点 E、 F,那么图中全等的三角形共有 B F C A.2 对 B.4 对 C.6 对 D.8 对
九年级数学第二十四章圆测试题（A） 时间：45分钟分数：100分 一、选择题（每小题3分，共33分） 1 .若O O所在平面内一点P到O O上的点的最大距离为10, A . 14 B . 6 C . 14 或6 D. 7 或3 2. 如图24—A —1 , O O的直径为10,圆心O到弦AB的距离 A . 4 B . 6 C . 7 I 3. 已知点O ABC的外心，若/ A=80 A . 40 4. 如图 A . 20° B . 80 24—A — 2, B . C. 160° △ ABC内接于O 最小距离为 OM的长为 4则此圆的半径为（ 3,则弦AB 的长是 D . 8 ，则/ BOC的度数为（ D. 120° 若/ A=40 °，则/ OBC的度数为（ O 图24—A — 4 图24—A — 3 小明同学设计了一个测量圆直径的工具， 垂直，在测直径时，把O点靠在圆周上， A . 12个单位 B . 10个单位 6. 如图 A . 80° 7. 如图 PB于点 A . 5 24—A —4, AB为O O的直径，点 B. 50° C. 40 ° 24—A —5, P 为O O 外一点， 5 .如图24—A —3, 标有刻度的尺子OA、OB在O点钉在一起， 读得刻度OE=8个单位，OF=6个单位，则圆的直径为（ D . 15个单位 ，则/ A等于（） 并使它们保持 ） PA 、 C、D，若PA=5，则△ PCD的周长为( B . 7 C . 8 D . 10 C . 1个单位 C 在O O 上，若/ B=60 ° D . 30° PB分别切O O于A、B, ) CD切O O于点E,分别交PA、 &若粮仓顶部是圆锥形，且这个圆锥的底面直径为 毡，则这块油毡的面积是（） 4m，母线长为3m，为防雨需在粮仓顶部铺上油 A . 6m2 C . 12m22 D . 12二 m 9.如图24—A —6,两个同心圆，大圆的弦AB 点P,且 CD=13 , PC=4，则两圆组成的圆环的面积是（ A. 16 n B . 36 n 10 .已知在△ ABC中， 10 A . 3 11.如图 C、D E、 C. 52 n AB=AC=13 , 与小圆相切于点P,大圆的弦CD经过） D. 81 n BC=10，那么△ ABC的内切圆的半径为（ 12 B . 5 24—A —7,两个半径都是4cm的圆外切于点C, 一只蚂蚁由点A开始依A、B、 F、C、G A的顺序沿着圆周上的8段长度相等的路径绕行，蚂蚁在这 C. 2 径上不断爬行，直到行走2006 n cm后才停下来， A . D 点 B . E 点 C . F 点D 二、填空题（每小题3分，共30分） 12 .如图24—A —8,在O O中，弦AB等于O 则蚂蚁停的那一个点为（ .G点 O的半径，0C丄AB交O O于点C,则 8段路 ）
九年级第二单元检测2（120分）一、按要求写单词(20分） 1.strange（名词） 2.steal（过去式） 3.steal（过去分词） https://www.doczj.com/doc/eb16758651.html,y（过去式） 5.lie（现在分词） 6.lie（过去式） https://www.doczj.com/doc/eb16758651.html,y（过去分词） 8.die（形容词） 9.die(名词） 10.warm（名词） 二．单项选择(40分） 1.___________exciting news! A. What B. What an C. How D. How an 2. We went to the farm last week. __________we had there! A. What fun B. What a fun C. How fun D. How a fun 3. _________books he has! A. How many B. How much C. What many D. What much 4. _________great weather it is today! A. How B. How a C. What D. What a 5. Jenny is practicing the piano. __________she is playing! A. How careful B. How carefully C. What careful D. What carefully 6. I’ve been away from my hometown for long. __________I miss my families and friends! A. What B. How C. How long D. What long 7. Do you know _________there will be a soccer match on CCTV5 tonight? A. that B. if C. where D. when 8. I ________him to help me with my English. A. hope B. make C. expect D. suggest 9. She wondered ________I liked best about Mid-Autumn Festival. A. that B. whether C. if D. what 10. I want to know _________he will go hiking with us when he is free tomorrow. A. that B. that if C. whether D. when 11. Jack felt really sad after his uncle _________. A. was dying B. died C. death D. dead 12. On Water Festival, people _________and go on the streets to throw water at each other. A. dress B. dress up C. put on D. wear 13. Jenny keeps two pets. One is a dog, _________is a rabbit. A. another B. an other C. the other D. other 14. I _________you have good luck in the next year. A. want B. would like C. wish D. hope 15. The math problem is really difficult for us_________. A. to work it out B. to work out C. to work out it D. working it out 16. Chang’e refused _________the magic medicine to Pang Meng. A. to give B. gave C. giving D. give 17. ---He dressed up ________a ghost last night. How scary! ---Take it easy! He just played a trick ________us. A. in, on B. in, in C. as, on D. as, in 18. Old Henry is __________man that he never lends anything to others. A. so mean B. so a mean C. such mean D. such a mean 19. _____, he left here angrily. A. Said nothing B. Saying nothing C. To say nothing D. Say nothing 20.Could you please tell me __________?
新人教版九年级数学上册 圆单元测试卷 一．选择题（共10小题,每题3分） 1．下列说法，正确的是（） A．弦是直径B．弧是半圆 C．半圆是弧D．过圆心的线段是直径 2．如图，在半径为5cm的⊙O中，弦AB=6cm，OC⊥AB于点C，则OC=（）A．3cm B．4cm C．5cm D．6c m （2题图）（3题图）（4题图）（5题图）（8题图） 3．一个隧道的横截面如图所示，它的形状是以点O为圆心，5为半径的圆的一部分，M是⊙O 中弦CD的中点，EM经过圆心O交⊙O于点E．若CD=6，则隧道的高（ME的长）为（）A．4 B．6C．8D．9 4．如图，AB是⊙O的直径，==，∠COD=34°，则∠AEO的度数是（）A．51°B．56°C．68°D．78° 5．如图，在⊙O中，弦AC∥半径OB，∠BOC=50°，则∠OAB的度数为（）A．25°B．50°C．60°D．30° 6．⊙O的半径为5cm，点A到圆心O的距离OA=3cm，则点A与圆O的位置关系为（）A．点A在圆上B．点A在圆内 C．点A在圆外D．无法确定 7．已知⊙O的直径是10，圆心O到直线l的距离是5，则直线l和⊙O的位置关系是（）A．相离B．相交C．相切D．外切 8．如图，正六边形ABCDEF内接于⊙O，半径为4，则这个正六边形的边心距OM和的长分别为（） A．2，B．2，πC．，D．2，
9．如图，四边形ABCD是⊙O的内接四边形，⊙O的半径为2，∠B=135°，则的长（）A．2πB．πC．D． 10．如图，直径AB为12的半圆，绕A点逆时针旋转60°，此时点B旋转到点B′，则图中阴影部分的面积是（） A．12πB．24πC．6πD．36π 二．填空题（共10小题,每题3分） 11．如图，AB是⊙O的直径，CD为⊙O的一条弦，CD⊥AB于点E，已知CD=4，AE=1，则⊙O的半径为． （9题图）（10题图）（11题图）（12题图） 12．如图，在△ABC中，∠C=90°，∠A=25°，以点C为圆心，BC为半径的圆交AB于点D，交AC于点E，则的度数为． 13．如图，四边形ABCD内接于⊙O，AB为⊙O的直径，点C为的中点．若∠A=40°，则∠B=____ （13题图）（14题图）（15题图）（17题图） 14．如图所示，在平面直角坐标系xOy中，半径为2的⊙P的圆心P的坐标为（﹣3，0），将⊙P 沿x轴正方向平移，使⊙P与y轴相切，则平移的距离为． 15．如图，点O是正五边形ABCDE的中心，则∠BAO的度数为． 16．已知一条圆弧所在圆半径为9，弧长为π，则这条弧所对的圆心角是．17．如图，在边长为4的正方形ABCD中，先以点A为圆心，AD的长为半径画弧，再以AB 边的中点为圆心，AB长的一半为半径画弧，则两弧之间的阴影部分面积是（结果保留π）．18．已知圆锥的底面圆半径为3，母线长为5，则圆锥的全面积是． 19．如果圆柱的母线长为5cm，底面半径为2cm，那么这个圆柱的侧面积是．20．半径为R的圆中，有一弦恰好等于半径，则弦所对的圆心角为．
Test for Unit 5 （时间：120分钟，满分：120分） 听力部分（25分） Ⅰ.听句子，选择与其意思相符的图片。(5分) ( )1. ( )2. ( )3. ( )4. ( )5. Ⅱ.听句子，选择最佳答语。(5分) ( )，I do. B．No，I won't. C．Yes，I was. ( ) B．Enjoy reading. C．Do some cooking. ( )，I can. B．This is Jenny ．I'm here. ( ) was taking a shower. B．In a library. C．Mary. ( ) same to you. B．You're ．I you. Ⅲ.听长对话，选择正确答案。(5分) 听第一段对话，回答第11－12小题。 ( ) happened at about 10：00 a． June 20th，2013 A．China was sending Shenzhou X. B．Shenzhou X was flying back to the earth. C．The astronaut was having class in Shenzhou X. ( ) was Li Lei doing at that time A．Studying for a test. B．Having his class. C．Watching TV. 听第二段对话，回答第13－15小题。 ( ) jumped into the river A．A young man. B．A driver. C．Rose. ( ) did the accident happen A．At 7：20 a．m. B．At 7：30 a．m. C．At 7：40 a．m. ( ) many people are mentioned (提及的) in the accident A．Two. B．Three. C．Four. Ⅳ.听短文，选择正确答案。(10分) ( ) was the speaker doing in the morning A．Cooking breakfast. B．Running. C．Reading. ( ) did the speaker usually go to work A．By car. B．By bike. C．By bus. ( ) was in the bike's basket (车筐) A．The bag. B．The umbrella. C．The book. ( ) did the speaker get to the bus stop again A．At 7：00. B．At 7：40. C．At 8：20.