ÔN TẬP KIỂM TRA GIỮA HỌC KỲ II
I. Phonetics
*Choose the word which has the underlined part pronounced differently from the rest.
1. a. contaminate b. Africa c. balance d. trade
2. a. vulnerable b. adult c. reduce d. culture
3. a. endangered b. destroyed c. damaged d. provided
4. a. attitude b. survive c. introduce d. human
5. A. women B. movie C. lose D. prove
6. A. threaten B. near C. fear D. dear
7. A. lie B. wide C. circle D. tiger
8. A. reduced B. destroyed C. damaged D. preserved
9. A. digested B. chewed C. killed D. enjoyed
10. A. penalty B. penalize C. center D. eject
11. a. source b. resource c. course d. colour
12. a. advice b. pick c. might d. kind
13. a. interfered b. allowed c. visited d. played
14. a. lie b. goalie c. achieve d. belief
15. a. sprint b. line c. divide d. ride
16. a. style b. penalty c. pretty d. typical
17. a. foul b. house c. amount d. adventurous
18. a. synchronized b. psychology c. carry d. activity
19. a. exercise b. diving c. physics d. variety
20. a. improve b. lose c. oppose d. movement
21. A. exercise B. diving C. physics D. variety
22. A. improve B. lose C. oppose D. movement
23. A. included B. wanted C. decided D. noticed
24. A. spirit B. describe C. title D. final
25. A. protected B. developed C. balanced D. established
26. a. hide b. ivory c. decline d. continent
27. a. weapon b. increase c. threat d. spread
28. a. endangered b. threatened c. recovered d. advanced
29. A. penalty B. penalize C. petrol D. pencil
30. A. foul B. found C. fought D. fowl
31. A. novel B. notice C. noble D. November
32. A. swallow B. wallet C. allow D. wallow
33. A. chew B. news C. few D. view
34. A. remind B. driven C. derive D. survive
35. A. special B. specify C. species D.eject
36. A. reduced B. threaned C. damaged D. preserved
*Choose the word which is stressed differently from the rest.
1. a. imagine b. elephant c. willingness d. chemical
2. a. commercial b. habitat c. develop d. position
3. a. government b. different c. benefit d. intensive
4. a. appearance b. animal c. classify d. silverback
5. A. achieve B. involve C. swallow D. eject
6. A. pioneer B. mountaineer C. suggestion D. engineer
7. A. prevent B. harmful C. protect D. affect
8. A. reserve B. conserve C. wildlife D. prevent
9. a. government b. agency c. protection d. endanger
10. a. extinction b. animal c. classify d. primary
11. a. habitat b. different c. industry d. introduce
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12. a. medicine b. endanger c. addition d. survival
13. a. derive b. provide c. modern d. depend
14. a. swallow b. subject c. digest d. enough
15. a. imagine b. important c. example d. wonderful
16. a. different b. carefully c. holiday d. reviewer
17. a. knowledge b. forever c. journey d. action
18. a. water b. football c. begin d. meter
19. a. personal b. penalty c. defensive d. vertical
20. a. award b. prevent c. visit d. except
21. a. goalie b. advanced c. above d. depend
22. a. summary b. decision c. character d. penalize
23. a. various b. wonderful c. opponent d. popular
24. a. acknowledge b. physical c. successful d. continue
25. a. perform b. invent c. attempt d. motion
26. a. destruction b. serious c. commercial d. defensive
27. a. sociable b. habitat c. industry d. interfere
28. a. medicine b. endanger c. sufficient d. survival
29. a. protect b. provide c. peaceful d. reserve
30. a. crossbar b. goalie c. advance d. movement
31. a. windsurfing b. referee c. penalty d. goalkeeper
32. a. thriller b. panda c. novel d. decide
33. a. gorilla b. natural c. benefit d. habitat
34. a. wildlife b. legal c. comic d. pollute
35. a. become b. reserve c. threaten d. depend
36. a. perform b. invent c. attempt d. motion
37. A. commit B. movement C. eject D. depend
38. A. opponent B. personal C. continue D. decision
39. A. referee B. engineer C. reference D. interfere
40. A. agency B. awareness C. protection D. endanger
41. a. illegal b. essential c. gorilla d. buffalo
42. a. wildlife b. fertile c. enact d. measure
43. a. decline b. grassland c. bamboo d. conserve
II. VOCABULARY AND GRAMMAR
PART 1
1. Chemical wastes from factories are _______ that cause serious damage to species habitats.
a. pollutes b. pollutants c. pollutions d. polluters
2. John failed again. He _______ harder.
a. must have tried b. should have tried c. can tried d. may have tried
3. _______ is a branch of Natural Science, and is the study of living organisms and how they interact with
their environment.
a. Biology b. Biological c. Biologist d. Biologically
4. It is a top secret. You _______ tell anyone about it.
a. mustnt b. neednt c. mightnt d. wont
5. We have plenty of time for doing the work. We _______ be hurried.
a. neednt b. shouldnt c. mustnt d. maynt
6. A / an _______ species is a population of an organism which is at risk of becoming extinct.
a. dangerous b. endanger c. endangered d. endangerment
7. I am not deaf. You _______ shout.
a. must b. mustnt c. need d. needn’t
8. If an area is _______, all the trees there are cut down or destroyed.
a. endangered b. deforested c. contaminated d. polluted
9. Teds flight from Amsterdam took more than 11 hours. He _____ exhausted after such a long flight now.
a. must be b. must be being c. must have been d. should have been
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10. _______ is the existence of a wide variety of plant and animal species living in their natural
environment. .
a. Biodiversity b. Conservation c. Globe d. Individual
11. _______ I borrow your lighter for a minute? - Sure, no problem. Actually, you _______ keep it if you
want to.
a. May / can b. Must / might c. Will / should d. Might / needn’t
12. Almost half of turtles and tortoises are known to be threatened with ____.
a. extinct b. extinction c. extinctive d. extinctly
13. It is reported that humans are the main reason for most species declines and habitat _______ and
degradation are the leading threats.
a. destroy b. destructive c. destructor d. destruction
14. I do not mind at all. You _______ apologize.
a. shouldnt b. neednt c. mustnt d. oughtnt to
15. _______ is the protection of environment and natural resources.
a. Survival b. Commerce c. Conservation d. Extinction
16. Toxic chemicals from factories are one of the serious factors that leads wildlife to the _______ of
extinction.
a. wall b. fence c. verge d. bridge
17. I _______ be at the meeting by 10:00. I will probably _______ take a taxi if I want to be on time.
a. must/ have to b. may / must c. should / neednt d. mustnt / shouldnt
18. You _______ forget to pay the rent tomorrow. The landlord is very strict about paying on time.
a. neednt b. mustnt c. do not have to d. may not
19. Keep quiet. You _______ talk so loudly in here. Everybody is working.
a. may b. must c. might d. mustnt
20. John is not at home. He _____ go somewhere with Daisy. I am not sure.
a. might b. will c. must d. should
21. _______ I have a day off tomorrow? - Of course not. We have a lot of things to do.
a. Must b. Will c. May d. Need
22. _______ I be here by 6 oclock? - No, you _______.
a. Shall/mightnt b. Must / neednt c. Will / maynt d. Might / wont
23. You _______ touch that switch, whatever you do.
a. mustnt b. neednt c. wont d. wouldnt
24. Susan ___ hear the speaker because the crowd was cheering so loudly.
a. mustnt b. couldnt c. cant d. neednt
25. - Oh no! I completely forgot we were supposed to pick Jenny up at the airport this morning.
- She _______ there waiting for us
a. neednt sit b. might still sit c. must still be sitting d. should have sat
26. Jane often wears beautiful new clothes. She _______ be very rich.
a. must b. could c. might d. needn’t
27. Due to profit, a lot of forests in the world are in ……………….of being cut down.
A. danger B. dangerous C. dangerously D. endanger
28. It is ……………….to leave children alone at home.
A. danger B. dangerous C. dagerously D. endangered
29. Our clear environment has been ……………….by pollutants from this factory.
A. pollute B. polluted C. pollution D. pollutants
30. Every year hundreds of wild animals are in danger of ……………………
A. extinction B. threat C. destruction D. damage
31. If water sources are …………………, there is no farming.
A. supplied B. provided C. contaminated D. flooded
32. We are now living in the …………of contamination.
A. threat B. help C. situation D. condition
33. A(n) _______ species is a population of an organism which is at risk of becoming extinct.
A. dangerous B. endanger C. endangered D. danger
34. Only a few of the many species at risk of extinction actually obtain legal _______.
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A. protect B. protection C. protective D. protector
35. ____ books are ones in which the story is told or illustrated with pictures.
A. Comic B. Thriller C. Romantic D. Science
36. Boy, stop reading. ________ the book down and go to bed.
A. Take B. Put C. Set D. Pick
37. It is a good book. I think it is interesting enough for you to ________.
A. put down B. swallow C. look up D. understand
38. A __ is a report in a newspaper or magazine in which a writer gives his opinion of a book, a film, or a
play.
A. page B. subject C. review D. journey
39. If you ________ a book, you have a brief look at it without reading or studying it seriously.
A. dip into B. put away C. pick up D. put down
40. The match ended in a ________.
A. tie B. equality C. quantity D. quality
41. The referee awarded a(n) _______ to the home team.
A. footballer B. foul C. penalty D. kick
42. During the last few decades, human beings have caused a great ______ to the environment.
A. damage B. impact C. destruction D. extinction
43. The government should __________ new laws to conserve wildlife in the area.
A. announce B. publish C. maintain D. enact
44. They suggested that animals should be kept in their natural __________.
A. habitat B. habit C. inhabitant D. habitation
45. We _______ protect wildlife in order to save our planet earth.
A. might B. may C. must D. mustn’t
46. I can’t find my glasses at home. I ________ left them in the office.
A. should have B. must have C. might be D. ought to have
47. I’ll lend you the money and you _________ pay me back till next month.
A. needn’t B. mustn’t C. need D. must
48. Bring your jacket with you. It ______ get cold in the evening.
A. can B. must C. may D. would
49. “You haven’t eaten anything since yesterday afternoon. You ______ be really hungry!”
A. may B. might C. can D. must
50. You _________ drive fast. There is a speed limit here.
A. must B. mustn’t C. need to D. ought to
51. The television isn’t working. It must _____ during the move.
A. have been damaged B. be damaged C. have damaged D. damage
52. Books in the home are the wonderful __________ of knowledge and pleasure.
A. supply B. origin C. source D. provision
53. Fiction is a type of literature that describes __________ people and events.
A. imaginary B. real C. historic D. important
54. Have you got any books on business methods or any similar __________?
A. subject B. content C. author D. matter
55. His lecture was interesting but too much to __________ all at once.
A. digest B. process C. chew D. convert
56. Children tend to read __________ books that tell stories through pictures.
A. novel B. fiction C. science D. comic
57. This book is not really __________.It is a waste of money buying it.
A. inform B. information C. informative D. informatively
58. To become a novelist, you need to be __________.
A. imagined B. imaginative C. imagination D. imaginary
59. Banana leaves should __________ to wrap things instead of plastic bags.
A. be used B. use C. be using D. have used
60. Minor _______ occur when a player prevents the free movement of an opponent in the swimming pool.
A. penalties B. shots C. fouls D. motions
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61. Emotional problems can seriously _____with a students work.
A. involve B. affect C. interfere D. influence
62. In recent years, fouls have been severely ______ in football matches.
A. forgiven B. ejected C. penalized D. scored
63. Unemployment is a(n) ______ cause of poverty.
A. minor B. major C. unneeded D. useless
64. He was lucky to escape from the accident with only ______ injuries.
A. important B. serious C. minor D. major
65. On behalf of the __________ country, Prime Minister Phan Van Khai declared the 22nd SEA Games
opening ceremony.
A. visiting B. guest C. home D. host
66. A number of incredible things ________ in the final match.
A. happening B. happened C. were happened D. have happened
67. _________, America depends on Africa for 40% of its oil imports.
A. Interesting B. To interest C. Interestingly D. Interested
68. The referee had no hesitation in awarding the visiting team a __________.
A. penalty B. penalize C. penal D. penalization
69. The main uses of books are to provide entertainment and ________.
a. inform b. information c. informative d. informer
70. The player gave a hard shot ________ straight into the opposing goal.
a. beauty b. beautiful c. beautify d. beautifully
71. Swimming produces both ________ and physical benefits.
a. psychology b. psychological c. psychologist d. psychologically
72. We were really impressed by the ________ of the synchronized swimmers. They were dancing very
attractively.
a. enjoyment b. entertainment c. performance d. breathing
73. Thanks to the ______ of paper, many books have been kept for a very long time.
a. information b. knowledge c. durability d. portability
74. The residents ________ that there is a crocodile at large in the area.
a. must be warned b. must have warned c. may warned d. may be warning
75. These boxes ________ with care.
a. should have handled b. should be handling
c. should handle d. should be handled
76. Thousands of cranes ________.
a. will be returned the spring b. will return the spring
c. will be returned in the spring d. will return in the spring
77. Books which describe imaginary events ________ fiction.
a. are called b. called c. is calling d. call
78. Peter ________ when we came into the discotheque.
a. was dancing Mary b. was dancing with Mary
c. was danced by Mary d. had danced Mary
79. We choose from a ________ of shore excursions including tours of the islands, swimming, golf, sailing
or snorkeling.
a. vary b. various c. varied d. variety
80. Im a great believer in the ________ of reading books and taking up a sport, which offer you both
knowledge and healthy.
a. benefits b. exercises c. practices d. points
PART 2
1. A lot of cows ________ on a productive farm.
a. can raise b. can be raising c. can be raised d. cannot raise
2. Nuclear waste ________ as a liquid in stainless-steel containers which are encased in concrete.
A. must store b. must be storing c. must be stored d. must have stored
3. Many wildlife parks have been installed security cameras to guard against _______ who regularly
hunt wild animals illegally.
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a. poachers b. conservationists c. environmentalists d. authority
4. Many Asian people _______ like hunting elephants for their ivory and tigers for their bones.
a. particular b. particularity c. particularly d. particularize
5. I cant find my book anywhere. I _______ have left it on the train. I am not sure.
a. must b. neednt c. should d. might
6. You _______ lunch. We have already eaten.
a. need preparing b. neednt have prepared c. should prepare d. should have prepared
7. If I had gone to the University of Miami, I _______ in their Spanish immersion program.
a. should participate b. neednt participate
c. could have participated d. must have participated
8. I will do everything. You _______ do anything unless you really want to.
a. may b. neednt c. must d. ought to
9. You ___ forget to learn the lesson by heart. The new teacher is so strict.
a. neednt b. mustnt c. maynt d. mightnt
10. They _______ be away for the weekend, but I am not sure.
a. might b. can c. must d. should
11. You _______ now if you wish.
a. must leave b. may leave c. need leaving d. mustnt leave
12. You _______ worry so much. I will help you.
a. must b. mustnt c. might not d. neednt
13. If there is anything you _______. Let me know.
a. must b. should c. need d. may
14. Our environment is ___ because of serious pollution and endangerment.
a. threat b. threatened c. threatening d. threaten
15. A _______ punishment is necessary to prevent poaching and cutting trees illegally.
a. severe b. severely c. severity d. severities
16. An _______ of the number of elephants in Asia is about 5 million.
a. estimate b. estimable c. estimated d. estimation
17. We need _______ actions and interventions of the local authorities to prevent national parks from
being destroyed by pollution.
a. excitedly b. threateningly c. approximately d. timely
18. _______ weapons have made more contribution to poaching and killing wild animals.
a. Huge b. Light c. Advanced d. Commercial
19. Are pandas ____ to only China? Do they survive in any other countries?
a. restricted b. distributed c. submitted d. threatened
20. Poachers deserve strict __ for what damage they have caused to wildlife.
a. estimation b. award c. location d. punishment
21. You _______ go to the shop. I have already bought the milk.
a. ought to b. neednt c. should d. may
22. Family _______ spend more time talking, instead of just watching TV.
a. must b. should c. might d. neednt
23. Please, keep silent. You _______ speak during the exam.
a. may not b. might not c. neednt d. must
24. You _______ drive at more than 70 miles per hour in the UK.
a. mustnt b. neednt c. may not d. might not
25. While hiking in Alaska, you have to keep an eye out for bears. If you see one, you _______
approach it. It is dangerous. .
a. might not b. may not c. neednt d. must not
26. You _______ leave the table once you have finished your meal and politely excused yourself
a. must b. neednt c. may d. mustnt
27. Those letters ________ now. You can do the typing later.
a. need typing b. neednt be typed c. need to type d. neednt typing
28. The museum is open to everybody. It ________ between 9am and 5pm.
a. visits b. visited c. can visit d. can be visited
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29. The room is too dirty. It ________ .
a. should clean b. should have cleaned
c. should be cleaning d. should be cleaned
30. The situation ________ to continue.
a. cannot allow b. cannot be allowed
c. cannot have allowed d. cannot be allowing
31. The machine ________ on by pressing this switch.
a. can turn b. can be turned c. must turn d. should be turning
32. Everybody agrees that no more staff ________.
a. should employ b. should not be employed
c. will not be employed d. will be employed
33. A ________ is a story long enough to fill a complete book, in which the characters and events are
usually imaginary.
a. pleasure b. novel c. page d. review
34. A ________ is the story of a persons life written by somebody else.
a. romance b. fiction c. biography d. science
35. _______ is a sport in which people or teams race against each other in boats with oars.
a. Rowing b. Windsurfing c. Swimming d. Water polo
36. In water polo, a shot is successful if the ball completely passes between the goal posts and
underneath the _______.
a. net b. crossbar c. ball d. goalie
37. _______ is a sport in which two or more people perform complicated and carefully planned
movements in water in time to music.
a. Rowing b. Windsurfing c. Diving d. Synchronized swimming
38. If the tie is not broken after two overtime ____, a penalty shootout will determine the winner.
a. opponents b. waves c. parts d. periods
39. Minor _______ occur when a player impedes or otherwise prevents the free movement of an
opponent including swimming on the opponents shoulders, back or legs.
a. penalties b. shots c. fouls d. motions
40. _______ is a game played in a swimming pool in which two teams of swimmers try to score goals
with a ball.
a. Water polo b. Rowing c. Swimming d. Water skiing
41. _______ is a sport in which you move along the surface of the sea or a lake on a long narrow board
with a sail on it.
a. Water polo b. Diving c. Windsurfing d. Scuba diving
42. More fouls were____in the final match than expected.
A. done B. committed C. achieved D. completed
43. The film The First to Fly is an _______biography of the two famous Wright brothers.
A. entertainer B. entertaining C. entertained D. entertainment
44. I find it______to work in this room. Its too small and airless.
A. comfortable B. comfortably C. uncomfortable D. comfort
45. This medicine_____after meals.
A. should take B. is taking C. has taken D. should be taken
46. He only had time to_______into the report. He couldn’t read it thoroughly.
A. see B. dip C. break D. read
47. A_______ is a book or a movie with an exciting story about crime or spying.
A. comic B. thriller C. romance D. biography
48. A_____ is a book or movie that tells a story about a love affair.
A. horror B. non-fiction C. thriller D. romance
49. You must ____food well before swallowing it, said the mother to her child.
A. eat B. digest C. chew D. process
50. We______ open the lions cage. It is contrary to Zoo regulations.
A. must B. mustnt C. neednt D. should
51. I ______ arrive on time, so please start dinner without me.
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A. could B. may C. may not D. should
52. _____you hand that book, please? Sure. Here it is.
A. Could B. Should C. Must D. May
53. Are these gloves necessary? Yes. You _______use this chemical without gloves. It will
burn your skin.
A. must not B. dont have to C. could not D. need not
54. You ________clean the windows. The window-cleaner is coming tomorrow.
A. dont have B. must C. mustnt D. neednt
55. Carl _________studied harder; he failed the test again.
A. must have B. should have C. could have D. neednt have
56. Would you like to go with me to the Williams wedding next month? Im not sure.
I_________be too busy with school work.
A. will B. might C. maybe D. should
57. Development of the area would __________ wildlife.
A. danger B. dangerous C. endanger D. dangerously
58. The sea turtle is among the_______species; it is in danger of extinction.
A. common B. normal C. abundant D. rare
59. When you play any sport, you may face the __ of being hurt and injured.
a. invention b. risk c. process d. support
60. Of the sports, underwater or on the ground, football is the most ________, and World Cup is always
the greatest sport event.
a. serious b. various c. informative d. popular
61. Something _____ about global warming or else some types of penguins will perish from the earth.
a. should do b. should be done c. should be doing d. should have done
62. Tommy likes the books that he borrowed from the school library very much. He has read them with
________.
a. entertainment b. romance c. tasting d. pleasure
63. The reviewer ________ Mathews new novel as a new style of modern science fiction.
a. chewed b. digested c. described d. drew
64. I have nearly finished reading the book. There are only a few ______ left.
a. pieces b. pages c. slices d. sheets
65. Can you ________ what it would be like to live without books?
a. imagine b. advise c. describe d. understand
66. The fire ________ by lightning.
a. must cause b. must be causing c. must have caused d. must have been caused
67. The last decision ________.
a. will be made by the manager b. that the manager will be made
c. that will be made by the manager d. will be making by the manager
68. This work ________ today so that we ________ a holiday tomorrow.
a. will finish / are having b. neednt be finished / will be having
c. should finish / can be had d. must be finished / can have
69. I wish I ________ many times.
a. will not be interrupted b. would not be interrupted
c. will not have interrupted d. would not have been interrupted
70. The package ________ carefully before it ________.
a. must be wrapped / is posted b. needs wrapping / will be posted
c. should wrap / is going to be posted d. will be wrapping / needs posting
III. Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) or phrase(s) that is
CLOSEST in meaning to the underlined part in each of the following questions.
71. Many species have become extinct each year before biologists can identify them.
a. destroy b. drain c. endanger d. discover
72. Humans depend on species diversity to provide food, clean air and water, and fertile soil for
agriculture.
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a. raise b. produce c. supply d. reserve
73. Many schools provide environmental education to increase students awareness of conservation
needs.
a. effort b. benefit c. exploitation d. knowledge
74. Being listed as an endangered species can have negative effect since it could make a species more
desirable for collectors and poachers.
a. awareness b. preservation c. support d. impact
75. The Bali Tiger was declared extinct in 1937 due to hunting and habitat loss.
a. reserve b. generation c. natural environment d. diversity
76. It is found that endangered species are often concentrated in areas that are poor and densely
populated, such as much of Asia and Africa.
a. disappeared b. increased c. threatened d. reduced
77. Humans depend on species diversity to provide food, clean air and water, and fertile soil for
agriculture.
a. destruction b. contamination c. fertilizer d. variety
78. Life on Earth is disappearing fast and will continue to do so unless urgent action is taken.
a. vanishing b. damaging c. polluting d. destroying
79. Hunting for meat and burning forests for soil cause destruction to wildlife.
a. organization b. contamination c. protection d. damage
80. After a tie, there are two overtime periods of three minutes each.
A. penalty B. draw C. score D. goal
81. The goalkeeper can also be ejected for twenty seconds if a major foul is committed.
A. advanced B. sprinted C. played D. excluded
82. Sports and festivals form an integral part of every human society.
a. essential b. informative c. invented d. exciting
83. Books are a primary means for dissemination of knowledge and information.
a. attempt b. distribution c. invention d. variety
84. In synchronized swimming, the players perform beautiful maneuvers to music and diving.
a. swimming suits b. tools for swimming
c. scuba sets d. movements that need skill and care
85. Aquatic sports have long been acknowledged as excellent ways to take physical exercise.
a. reduced b. encouraged c. recognized d. practiced
86. Underwater activities are less varied and the most popular of which are snorkeling and scuba diving.
a. portable b. diverse c. familiar d. durable
87. In 1989, a ban was given on all international trade in ivory.
a. action b. contamination c. destruction d. prohibition
88. Although the government has taken certain measures to protect elephants, numerous threats remain
for them.
a. too much b. a lot of c. some d. a few
89. Please give me some advice to buy suitable books for my ten-year-old girl.
a. recommendation b. information c. fiction d. interest
90. The whole audience objected to their foul play during the football match.
A. dependent B. unfair C. clumsy D. imperfect
91: Set yourself in vertical position.
A. cross B. round C. over D. straight
IV. Circle the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s)
1. The earth is being threatened and the future looks bad.
A. done B. made C. defended D. varied
2. We cannot clean up our polluted rivers and seas overnight.
A. cleared B. purified C. honored D. respected
3. I can’t stand people who treat animals cruelly.
A. gently B. cleverly C. reasonably D. brutally
4. Names of people in the book were changed to preserve anonymity.
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1.1.1Phương trình bậc nhất hai ẩn
Định nghĩa .
BÀI TOÁN THỰC TẾ TIỆM CẬN CỦA ĐỒ THỊ HÀM SỐ
Câu 1.Để loại bỏ chất gây ô nhiễm không khí từ khí thải của một nhà máy, người ta ước tính chi phí cần bỏ ra là (triệu đồng).
Số tiệm cận đứng của đồ thị hàm số là?
BÀI TẬP TRẮC NGHIỆM HỆ THỨC LƯỢNG TRONG TAM GIÁC
Câu 1: Điểm là điểm trên đường tròn lượng giác, biểu diễn cho góc lượng giác có số đo . Tìm khẳng định đúng.
A. .B. .C. .D. .
BÀI 2: SỰ ĐIỆN LI, THUYẾT BRONSTED-LOWRY VỀ ACID-BASE
A. LÝ THUYẾT
Sự điện li là quá trình phân li các chất khi tan trong nước thành các ion. Chất điện li là những chất tan trong nước phân li thành các ion . Chất không điện li là chất khi tan trong nước không phân li thành các ion
PHƯƠNG PHÁP TÌM GIÁ TRỊ LỚN NHẤT VÀ GIÁ TRỊ NHỎ NHẤT
DỰA VÀ BẢNG BIẾN THIÊN VÀ ĐỒ THỊ
Ví dụ 1: Cho hàm số liên tục trên đoạn và có bảng biến thiên trong đoạn như hình. Gọi là giá trị lớn nhất của hàm số trên đoạn . Tìm giá trị của ?
TRẮC NGHIỆM ĐÚNG SAI ÔN TẬP CHƯƠNG PHƯƠNG PHÁP TỌA ĐỘ TRONG KHÔNG GIAN
Câu 1.Trong không gian , cho điểm và mặt phẳng .
Khẳng định nào sau là đúng hay sai?
TRẮC NGHIỆM LÝ THUYẾT GIAO THOA SÓNG CƠ
Câu 1: (SBT - KNTT) Hiện tượng giao thoa sóng là hiện tượng
A. giao thoa của hai sóng tại một điểm trong môi trường.