Đề thi thử THPT quốc gia năm 2015 môn tiếng anh trường THPT CHUYÊN ĐÔNG hà lần 1

SỞ GD & ĐT QUẢNG TRỊ TRƯỜNG THPT CHUYÊN ĐÔNG HÀ ĐỀ CHÍNH THỨC (Đề thi có 06 trang) KÌ THI THỬ LẦN CHUẨN BỊ CHO KÌ THI THPT QUỐC GIA Tháng 04/2015 Môn thi: TIẾNG ANH Thời gian làm bài: 90 phút Mã đề thi: 209 Họ tên thí sinh: ……………………………………… Số báo danh:……………………………………………… I PHẦN TRẮC NGHIỆM (64 Câu; điểm) I Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks The Planets of Jupiter The largest of the giant gas planets, Jupiter, with a volume 1,300 times greater than Earth’s, contains more than twice the mass of all the other planets combined It is thought to be a gaseous and fluid planet without solid surfaces, Had it been somewhat more massive, Jupiter might have attained internal temperatures as high as the ignition point for nuclear reactions, and it would have flamed as a star in its own right Jupiter and the other giant planets are of a low-density type quite distinct from the terrestrial planets: they are composed predominantly of such substances as hydrogen, helium, ammonia, and methane, unlike terrestrial planets Much of Jupiter’s interior might be in the form of liquid, metallic hydrogen, Normally, hydrogen is a gas, but under pressures of millions of kilograms per square centimeter, which exist in the deep interior of Jupiter, the hydrogen atoms might lock together to form a liquid with the properties of a metal Some scientists believe that the innermost core of Jupiter might be rocky, or metallic like the core of Earth Jupiter rotates very fast, once every 9.8 hours As a result, its clouds, which are composed largely of frozen and liquid ammonia, have been whipped into alternating dark and bright bands that circle the planet at different speeds in different latitudes Jupiter’s puzzling Great Red Spot changes size as it hovers in the Southern Hemisphere Scientists speculate it might be a gigantic hurricane, which because of its large size (the Earth could easily fit inside it), lasts for hundreds of years Jupiter gives off twice as much heat as it receives from the Sun Perhaps this is primeval heat or beat generated by the continued gravitational contraction of the planet Another star like characteristic of Jupiter is its sixteen natural satellites, which, like a miniature model of the Solar System, decrease in density with distance from rocky moons close to Jupiter to icy moons farther away If Jupiter were about 70 times more massive, it would have become a star, Jupiter is the best-preserved sample of the early solar nebula, and with its satellites, might contain the most important clues about the origin of the Solar System ammonia B helium C hydrogen D methane Question It can be inferred from the passage that the appearance of alternating bands circling Jupiter is caused by A the Great Red Spot B heat from the Sun C the planet’s fast rotation D Storms from the planet’s Southern Hemisphere Email: anhdungdevelopment@gmail.com Question The author uses the word puzzling in paragraph to suggest that the Great Red Spot is A the only spot of its kind B not well understood B among the largest of such spots D a problem for the planet’s continued existence Question Paragraph supports which of the following conclusions? A Jupiter gives off twice as much heat as the Sun B Jupiter has a weaker gravitational force than the other planets C Scientists believe that Jupiter was once a star D Scientists might learn about the beginning of the Solar System by Studying Jupiter Question Why does the author mention primeval heat in paragraph 3? A To provide evidence that Jupiter is older than the Sun B To provide evidence that Jupiter is older than the other planets C To suggest a possible explanation for the number of satellites that Jupiter has D To suggest a possible source of the quantity of heat that Jupiter gives off Question 10 Which of the following statements is supported by the passage? A If Jupiter had fewer satellites, it would be easier for scientists to study the planet itself B If Jupiter had had more mass, it would have developed internal nuclear reactions C If Jupiter had been smaller, it would have become a terrestrial planet D if Jupiter were larger, it would give off much less heat II Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions Question 11.A lean B.teammate C.beacon D.overhead Question 12.A challenge B.snatch C.brochure D.chocolate Question 13.A naked B.sacred C.learned D.studied III Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of the primary stress in each of the following questions Question 14 A description B counselor C inspector D amendment Question 15 A psychiatry B inexpensive C patriotic D scientific IV Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions Question 16 By tomorrow, the car by me A will have been bought B will be bought C was being bought D was bought Question 17 “ ” is used to express disagreement A I couldn’t disagree with you any more B That’s not a good idea C That’s the way I see it D That’s what I’m not thinking of Question 18 The meeting has been put to Friday as so many people have got the flu A up B in C out D back Question 19 The activities of the international marketing researcher are frequently much broader than A the domestic marketer has B the domestic marketer does C those of the domestic marketer D that which has the domestic marketer Email: anhdungdevelopment@gmail.com A fascinating B fascinate C fascinates D fascinated Question 25 " anyone ring while I’m away, please take a message." A Will B May C Should D Would Question 26 She had to pass all her exams, or she would not have a holiday A instead B else C though D therefore Question 27 The meeting has been brought to Monday due to the seriousness of the situation A on B out C.down D forward Question 28 If you want your son to better on his exams, I suggest he harder A will study B studies C will study D study Question 29 My uncle was ill last summer; however, fortunately, he is now making a slow but steady recovery A seriously B.deeply C.fatally D.critically Question 30 The chief foods eaten in any country depend largely on best in its climate and soil A what grows B it grows C does it grow D what does it grow Question 31 She made a list of what to forget anything A in order to B so that C so as not to D not to Question 32 A: “Can I smoke in here?” - B: “I’d rather you .” A don’t B didn’t C.won’t D.can’t Question 33 The grape is the , juicy fruit of a woody vine A skin which is smooth B skinned is smooth C smooth-skinned D smooth skin Question 34 The collar workers received a rise, but the workers on the shop-door were told they had to wait A blue B.black C.grey D.white Question 35. wooden buildings helps to protect them from damage due to weather A The paint B Painted C.By painting D.Painting Question 36 She kept him because he had a high temperature A on B.in C.off D.out Question 37 Using many symbols makes to put a large amount of information on a single map A it possible B.possible C.it is possible D.that possible Question 38 Having been served lunch, A the problem was discussed by the members of the committee B it was discussed by the committee members the problem C the committee members discussed the problem D a discussion of the problem was made by the members of the committee Question 39 Not until the dedication of Yellowstone Park in the late nineteenth century a national park A the United States had B did the United States have C when the United States had D the United States having Question 40. mammals have hair at some time in their lives, though in certain whales it is present only before birth A Most B The most C Most of which D In most of the V Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in Email: anhdungdevelopment@gmail.com meaning to the underlined word(s) in each of the following questions Question 41 Polluted water and increased water temperatures have driven many species to the verge of extinction A enriched B contaminated C purified D strengthened Question 42 The story told by the teacher amused children in the class A astonished B frightened C jolted D saddened VI Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions Question 43 You must answer the police’s questions truthfully; otherwise, you will get into trouble A in a harmful way B as trustingly as you can C with a negative attitude D exactly as you can Question 44 It takes me 15 minutes to get ready A to prepare B.to wake up C to go D.to get up VII.Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions Question 45 It is vitally important that she takes this medication night and morning A vitally B that C takes D medication Question 46 Had it not been for you help me, I wouldn't have succeeded A not B.you help me C wouldn't D.succeeded Question 47 Children enjoy telling and listening to ghosts stories, especially on Halloween night A telling and listening B ghosts stories C especially D Halloween night Question 48 We had better to review this chapter carefully because we will have some questions on it on our test tomorrow A to review B.carefully C will D.some VIII Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to the sentence given in each of the following questions Question 49 Due to the fact that the demand for tea was very high in the 19th century, its price was astronomical A It was not until the 19th century that the demand for tea started to increase B It was its astronomical price which decreased the demand for tea in the 19th century C In the 19th century the price for tea didn't increase despite the demand D The demand for tea was so high in the 19th century that its price was enormous Question 50 French is the only language other than English spoken on five continents A French and English are spoken widely in official and commercial circles B Unlike French, English is spoken on five continents C French and English are the only languages that are spoken on five continents D Before English, French was the only language spoken on five continents Question 51 Adults laugh less than children, probably because they play less A Unlike adults children laugh more while playing games B Since adults have less time playing games; they don't laugh as much as children C The reason why adults laugh less than children might be that they play less D No matter how much adults play, they can't laugh more than children IX Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines the pair of sentences given in each of the following questions Question 52 The fire-fighters made every effort to put off the flames The building burned down Email: anhdungdevelopment@gmail.com completely A The building burned down completely though the fire-fighters made every effort to put off the flames B Had it not been for the fire-fighters’ every effort, the building would have burned down completely C Making every effort to put off the flames, the fire-fighters completely burned down the building D Since the fire-fighters made every effort to put off the flames, the building burned down completely Question 53 Marry loved her stuffed animal when she was young She couldn’t sleep without it A When Marry was young, she loved her stuffed animal so as not to sleep with it B As Marry couldn’t sleep without her stuffed animal when she was young, she loved it C When Marry was young, she loved her stuffed animal though she couldn’t sleep without it D When Marry was young, she loved her stuffed animal so much that she couldn’t sleep without it Question 54 She phoned him early in the morning She didn’t want him to forget to bring along the document A She phoned him early in the morning when she didn’t want him to bring along the document B She phoned him early in the morning so that she wanted him to bring along the document C She phoned him early in the morning lest he would forget to bring along the document D She phoned him early in the morning though she didn’t want him to forget to bring along the document X Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the word or phrase that best fits each of the numbered blanks Environmental Concerns Earth is the only place we know of in the universe that can support human life (55) human activities are making the planet less fit to live on As the western world (56) on consuming two-thirds of the world's resources while half of the world's population so just to stay alive we are rapidly destroying the (57) resource we have by which all people can survive and prosper Everywhere fertile soil is (58) built on or washed into the sea Renewable resources are exploited so much that they will never be able to recover (59) We discharge pollutants into the atmosphere without any thought of the consequences As a (60) the planet's ability to support people is being reduced at the very time when rising human numbers and consumption are (61) increasingly heavy demands on it The Earth's (62) resources are there for us to use We need food, water, air, energy, medicines, warmth, shelter and minerals to (63) us fed, comfortable, healthy and active If we are sensible in how we use the resources, they will (64) indefinitely But if we use them wastefully and excessively, they will soon run out and everyone will suffer Question 55. (55) A Although B Yet C And D Despite A remain Question 65 B go Email: anhdungdevelopment@gmail.com C last D stand WRITING TASK You should spend about 30 minutes writing a paragraph Do you agree or disagree with the following statement? 'Parents are the best teachers.' Use specific reasons and examples to support your answer You should give reasons for your answer using your own ideas and experience Write at least 250 words ĐÁP ÁN VÀ LỜI GIẢI CHI TIẾT 1.D 11.D 21.C 31.B 41.C 51.C 61.A 71 2.B 12.C 22.B 32.B 42.D 52.A 62.C 72 3.C 13.D 23.B 33.C 43.D 53.D 63.D 73 4.D 14.B 24.A 34.D 44.A 54.C 64.B 74 5.A 15.A 25.C 35.D 45.C 55.B 65 75 6.C 16.A 26.B 36.B 46.B 56.D 66 76 Question 1: Đáp án D Đáp án D attain = reach: đạt , giành Các từ lại: attempt: cố gắng; change: thay đổi; lose: Email: anhdungdevelopment@gmail.com 7.B 17.B 27.D 37.A 47.B 57.C 67 77 8.D 18.D 28.D 38.C 48.A 58.D 68 78 9.D 19.C 29.A 39.B 49.D 59.B 69 79 10.B 20.A 30.A 40.A 50.C 60.A 70: 80 Question 2: Đáp án B Đáp án B Jupiter and the other giant planets are of a low-density type quite distinct from the terrestrial planets: they are composed predominantly of such substances as hydrogen, helium, ammonia, and methane, unlike terrestrial planets Question 3: Đáp án C Question 4: Đáp án D Question 5: Đáp án A Question 6: Đáp án C Question 7: Đáp án B Question 8: Đáp án D Question 10: Đáp án B Question 11: Đáp án D Đáp án D Từ overhead có phần gạch chân phát âm /e/, từ lại có phần gạch chân phát âm /i:/ Question 12: Đáp án C Đáp án C Từ brochure có phần gạch chân phát âm /∫/, từ lại có phần gạch chân phát âm /t∫/ Question 13: Đáp án D Đáp án D Theo quy tắc đọc đuôi -ed, từ studied có phần gạch chân phát âm /id/, từ lại tính từ có phần gạch chân phát âm /id/ Question 14: Đáp án B Đáp án B Từ counselor có trọng âm rơi âm tiết thứ nhất, từ lại có trọng âm rơi âm tiết thứ hai Question 15: Đáp án A Đáp án A Từ psychiatry có trọng âm rơi âm tiết thứ hai, từ lại có trọng âm rơi âm tiết thứ ba Question 16: Đáp án A Đáp án A By + mốc thời gian tương lai => câu chia tương lai hoàn thành “will have done” Question 17: Đáp án B Đáp án B That’s not a good idea - Đó khơng phải ý kiến hay => câu thể khơng đồng tình Các câu lại: A Tơi khơng thể đồng ý với bạn C Đó cách mà tơi nhìn A Đó khơng phải điều tơi nghĩ Question 18: Đáp án D Đáp án D put back: lùi lại, chậm lại Các cụm lại: put up: kéo lên, đặt lên; put out: tắt, dập tắt; put in: đưa ra, dẫn r a Question 19: Đáp án C Đáp án C those = those activities Question 20: Đáp án A Đáp án A Với câu hỏi láy đuôi, ta dung phủ định dạng viết tắt, am not khơng có dạng viết tắt,nên với chủ ngữ “I” ta dùng “aren’t” Question 21: Đáp án C Đáp án C got married + to + someone: cưới Question 22: Đáp án B Đáp án B apologize someone for doing something: xin lỗi điều Các từ lại: excuse: thứ lỗi, tha lỗi; forgive: tha thứ; confess: thú tội Question 23: Đáp án B Email: anhdungdevelopment@gmail.com I’ve never seen such a nice cell phone - Tớ chưa nhìn thấy điện thoại đẹp => lời khen => Đáp án B Cám ơn Tớ vui cậu thích Các đáp án khác khơng hợp ngữ cảnh: A Ồ Tớ C Câu đáp lại lời cám ơn D Tớ đồng tình với cậu Question 24: Đáp án A Từ cần điền tính từ sau “is” => B C loại fascinating (adj): có tính mê ( chủ động ); fascinated (adj): bị mê ( bị động ) => Đáp án A Question 25: Đáp án C Đáp án C Rút gọn If câu điều kiện loại I: Should + S + V, Question 26: Đáp án B Đáp án B or else: khơng, Instead (+of): thay v ì ; though: mặc dù; therefore: Question 27: Đáp án D Đáp án D bring forward: đưa ra, đề ra, mang Các từ lại: bring on: dẫn đến, gây ra; bring out: nói lên; bring down: hạ xuống, làm tụt xuống Question 28: Đáp án D Đáp án D Cấu trúc gợi ý: S + suggest + S + V (bare - inf) Question 29: Đáp án A Đáp án A seriously ill: ốm nặng Các từ lại: deeply: từ sâu thẳm; fatally: cách chết người; critically: trích Question 30: Đáp án A Đáp án A what bắt đầu mệnh đề danh ngữ, thay cho danh từ đứng đầu câu làm chủ ngữ “what + V.” ( động từ theo sau chia dạng số ); làm tân ngữ “what + S+ V.” Question 31: Đáp án B Cấu trúc mục đích: In order ( not ) to/ so as ( not ) to + V: để/ khơng để làm So that + clause: để => Dựa vào nghĩa, ta chọn đáp án B Dịch: Cô liệt kê thứ phải làm để không bị quên thứ Question 32: Đáp án B Đáp án B Cấu trúc: would rather + S + V ( QKĐG ) Question 33: Đáp án C Đáp án C Cách hình thành tính từ ghép: smooth -skinned: vỏ nhẵn Question 34: Đáp án D Đáp án D white collar worker: công nhân viên chức, nhân viên văn phòng Các từ lại: blue-collar worker: giai cấp công nhân, grey collar worker: công nhân kỹ thuật cổ xám; Question 35: Đáp án D Đáp án D V-ing, danh động từ đứng đầu câu làm chủ ngữ, theo sau động từ chia dạng số Question 36: Đáp án B Đáp án B keep someone in : giữ khơng cho ngồi Dịch: Cơ giữ khơng cho ngồi bị sốt Question 37: Đáp án A Email: anhdungdevelopment@gmail.com Đáp án A make + it + adj: khiến trở nên Question 38: Đáp án C Đáp án C V-ing đầu câu => lược bỏ chủ ngữ , hai vế có chủ ngữ Dịch: Sau phục vụ bữa trưa, thành viên ủy ban thảo luận vấn đề Question 39: Đáp án B Đáp án B Cấu trúc đảo ngữ “ tận ” : Not until + phrase/ clause + auxiliary + S + V Question 40: Đáp án A Đáp án A Most + N: hầu h ế t The most + adj/adv: dùng so sánh cao Most of which: đáp án không chọn which khơng thay cho danh từ trước In most of the: đáp án khơng chọn câu thiếu thành phần chủ ngữ Question 41: Đáp án C Đáp án C polluted: bị ô nhiễm = purified: làm Nghĩa từ lại: enriched: làm giàu; contaminated: bị nhiễm; strengthened: làm cho mạnh Question 42: Đáp án D Đáp án D amused: hứng thú >< saddened: buồn Nghĩa từ lại: astonished: ngạc nhiên; frightened: sợ hãi; jolted: bị lắc bật Question 43: Đáp án D Truthfully: cách chân thật => đáp án D exactly you can: xác bạn Question 44: Đáp án A Đáp án A get ready = prepare: chuẩn bị sẵn sàng Nghĩa từ lại: wake up: đánh thức; go: đi; get up: thức dậy Question 45: Đáp án C Đáp án C takes => take Cấu trúc với tính từ khuyên bảo, gợi ý, động từ mệnh đề that thường chia dạng nguyên thể Question 46: Đáp án B Đáp án B you help me => you helping me , sau giới từ “for” ta dùng danh động từ “V-ing” Question 47: Đáp án B Đáp án B ghosts stories => ghost stories: truyện ma Question 48: Đáp án A Đáp án A to review => review, vì, had better + V = should + V : nên làm Question 49: Đáp án D Đáp án D Cấu trúc “ m ” : S + be + so + adj + that + S + V Dịch: Nhu cầu dùng trà cao kỷ thứ 19 giá lại tăng cao Question 50: Đáp án C Câu cho: Pháp ngôn ngữ khác ngồi tiếng Anh nói năm châu lục Đáp án C Pháp Anh ngôn ngữ nói năm châu lục Question 51: Đáp án C Dựa vào nghĩa để chọn câu này: Câu cho: Người lớn cười bọn trẻ, họ chơi Đáp án C: Lý người lớn cười bọn trẻ họ chơi Các đáp án khác không đồng nghĩa: Email: anhdungdevelopment@gmail.com A Không giống người lớn, bọn trẻ cười nhiều chơi B Bởi người lớn có thời gian để chơi, họ không cười nhiều bọn trẻ D Dù người lớn chơi nhiều nữa, họ cười nhiều bọn trẻ Question 52: Đáp án A Nghĩa câu cho: Những người lính cứu hỏa nỗ lực dập tắt lửa Toàn nhà bị thiêu rụi hoàn toàn => Hai vế tương phản, nhượng => Đáp án A Athough ( ), nối hai mệnh đề nhượng Question 53: Đáp án D Nghĩa câu cho: Marry yêu thú nhồi bơng nhỏ Cơ khơng thể ngủ mà khơng có A Khi Marry trẻ, u thú nhồi bơng để khơng ngủ với B Vì Marry khơng thể ngủ không thú nhồi cô trẻ nên u thích C Khi Marry trẻ, u thú nhồi bơng khơng thể ngủ mà khơng có D Khi Marry trẻ, q u thú nhồi cô cô ngủ mà khơng có => Đáp án D Question 54: Đáp án C Nghĩa câu cho: Cô gọi cho sớm vào buổi sáng Cô không muốn quên mang theo tài liệu A Cô gọi điện cho anh vào buổi sáng sớm cô không muốn phải mang theo tài liệu B Cô gọi điện cho anh vào buổi sáng sớm để cô muốn anh mang theo tài liệu C Cô gọi điện cho anh vào buổi sáng sớm sợ anh quên mang theo tài liệu D Cô gọi điện cho anh vào buổi sáng sớm cô không muốn quên mang theo tài liệu => Đáp án C lest: sợ Question 55: Đáp án B Đáp án B Yet: dù Although( ) thường nối hai mệnh đề, despite + N/ V-ing: mặc dù; and: nối hai từ/câu có chức giống Question 56: Đáp án D Đáp án D carry on: xúc tiến, tiếp tục Các từ lại: continue: tiếp tục; repeat: nhắc lại; follow: theo Question 57: Đáp án C Đáp án C very( adj): thực sự, riêng Các từ lại: individual: thuộc cá nhân; alone: đơn; solitary: cô đơn Question 58: Đáp án D Đáp án D either or : hoặc Question 59: Đáp án B Đáp án B completely: hồn thành, xong Nghĩa từ lại: utterly: hoàn toàn; quite: hoàn toàn; greatly: cách tuyệt vời Question 60: Đáp án A Đáp án A As a result: kết Question 61: Đáp án A Đáp án A make demands on : đòi hỏi Question 62: Đáp án C Email: anhdungdevelopment@gmail.com Đáp án C natural resources: tài nguyên thiên nhiên Question 63: Đáp án D Đáp án D keep someone + adj: Question 64: Đáp án B Đáp án B last: kéo dài Các từ lại: stand: đứng; go: đi; remain: lại Question 65: Đáp án Sample: There are many ways for a child to get knowledge and to become a good member of the society Lots of people used to think that school is the best way to educate children, but nowadays they have changed their mind In my opinion, parents are the best teachers because they are those who understand their children most, they are always beside their children, and parents usually try to be good examples for their children to follow First of all, nobody can understand the children better than the parents They watch over their children from the early time, so they know what their son or daughter is thinking exactly, and what their characters or behaviors are Because of that, if the children make any mistakes, parents can more easily realize reasons and correct them on time After knowing what has been wrong with the children, parents then give useful advice to them It is the best way to teach and to explain what is right and what is wrong, what can be done and what cannot Thanks to their advice, the children can become more mature and stable Secondly, parents are always beside their children at any time In life, there will be moments that a person falls into difficulties or distress and it is parents who are always worried and take care of them, make them more optimistic about life Moreover, the children’s personality can be best formed when they spend more time with their parents Every action from their mother or father will have a deep impact on how the children see the world and build up their feelings Because of that, they can realize the responsibility for their own children later In conclusion, the best teachers for children are their parents, who have taught them from the first lesson to many things in life with all their love and caring Parents are always beside their children at any time, in any case and most importantly, nobody can understand the children better than the parents Email: anhdungdevelopment@gmail.com ... TIẾT 1. D 11 .D 21. C 31. B 41. C 51. C 61. A 71 2.B 12 .C 22.B 32.B 42.D 52.A 62.C 72 3.C 13 .D 23.B 33.C 43.D 53.D 63.D 73 4.D 14 .B 24.A 34.D 44.A 54.C 64.B 74 5.A 15 .A 25.C 35.D 45.C 55.B 65 75 6.C 16 .A... dùng trà cao kỷ thứ 19 giá lại tăng cao Question 50: Đáp án C Câu cho: Pháp ngơn ngữ khác ngồi tiếng Anh nói năm châu lục Đáp án C Pháp Anh ngôn ngữ nói năm châu lục Question 51: Đáp án C Dựa vào... điện cho anh vào buổi sáng sớm cô không muốn phải mang theo tài liệu B Cô gọi điện cho anh vào buổi sáng sớm để cô muốn anh mang theo tài liệu C Cô gọi điện cho anh vào buổi sáng sớm sợ anh quên