39 đề thi thử tn thpt 2023 môn tiếng anh sở giáo dục và đào tạo tuyên quang (bản word có lời giải chi tiết)

ĐỀ THI THỬ TỐT NGHIỆP THPT 2023 KÌ THI TỐT NGHIỆP TRUNG HỌC PHỔ THÔNG NĂM 2023 Bài thi: NGOẠI NGỮ; Môn thi: TIẾNG ANH SỞ GIÁO DỤC VÀO TẠO TUN QUANG Mơn thi: TIẾNG ANH (Đề thi có 04 trang) Thời gian làm bài: 60 phút, không kể thời gian phát đề Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part A date B cat C fan D band A there B throw C threat D through Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions Sarah quit smoking two months ago She broke a she had had for more than half of her life A sweat B habit C fire D favour C at D in We finally finished the project 2020 A during B on A new community house _ in our neighborhood A has built B build C builds D was built I will call and tell you something interesting _ A when I come home after work B when I had come home after work C when I was coming home after work D when I came home after work Jane _ the word in the dictionary whenever she is not sure of its spelling or meaning A looks up B turns on C takes after D stands for She has been writing to him since she _ his email A will have B is having C had D has C wasn’t she D isn’t she Your sister is cooking lunch in the kitchen, _? A is she B was she 10 The police _ their attention to the events that led up to the accident A confined B confirmed C completed D contained 11 I wanted to take a photo of the man _ to one of the guests near the window A have talked B talked 12 The faster you drive, _ it is C talking D was talking A dangerous B most dangerous C more dangerous D the more dangerous 13 People should stop smoking _ it is extremely detrimental to health A because B despite C because of D although C signal D signing 14 Could you _ your name here, please? A signature B sign 15 Paul's ability to a challenge made him the perfect candidate to head up the new sales division A handle B control C run D order 16 John lost the _ bicycle last week and his parents were very angry with him A beautiful new Japanese B new beautiful Japanese C Japanese beautiful new D beautiful Japanese new 17 Mrs Robinson great pride in her cooking A has B takes C gets D finds Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions 18 Adverse weather conditions made it difficult to play the game A bad B favourable C comfortable D severe 19 Despite careful preparation, the candidate got cold feet when asked a challenging question and gave an unsatisfactory answer A had a fever B stayed confident C became aggressive D got nervous Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs 20 The participants in the workshop learned how to communicate, negotiate, and work with his partners for the most effective outcome A how B in C his D outcome 21 The effect of this drug has been proven to be extremely harmful a long time ago A to be B has been C harmful D this drug 22 Strict and severe as he was with his soldiers, he was particularly considerable to the people generally, and made their burdens as light as possible A Strict and severe B considerable C their burdens D soldiers Mark the letter A, B, C, or D' on your answer sheet to indicate the option that best completes each of the following exchanges 23 Laura is thanking Tom for his present - Laura: "Thank you for your lovely present, Tom" - Tom: " ” A You're welcome B Good idea C Same to you D That's not good 24 Daisy is in a restaurant near her house - Waiter: May I take your order now, sir? - Daisy: “ ” A Ok, here is my bill B Thanks, I've really had enough C Sure, it's delicious D Yes, I'd like some fish and chips Mark the letter A, B, c, or D on your answer sheet to indicate the sentence that best combines 25 Joe is not here with us He will know how to fix this technical issue A If only Joe were here with us to help fix this technical issue B Provided that Joe is here with us, he won't know how to fix this technical issue C Joe will know how to fix this technical issue even if he is not here with us D We wish Joe had been here with us and fix this technical issue 26 The marketing team knew they couldn't sign the contract They soon started to blame each other A No sooner had the marketing team started to blame each other than they knew they couldn't sign the contract B As soon as they blamed each other, the marketing team knew they couldn't sign the contract C Hardly had the marketing team known they couldn't sign the contract when they started to blame each other D Not only could the marketing team sign the contract but they also blamed each other Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks Why is culture important and how does it answer the question "What is cultural identity?" Culture is the underlying foundation of traditions and beliefs (27) _ help a person relate to the world around them It is the basis for (28) superstitions they may have It is the aversion to specific types of meat, or which days you can work on Culture gives us a definite starting (29) when beginning to search for our roots Knowing where a person comes from will help to define how they look at their family obligations (30) how they celebrate important milestones in life As a person has given up their cultural identity, they can no longer identify themselves with the things that were once the most important things in their lives They lose direction As time (31) by and they continue to forget about their past and their natural traditions, their identity becomes less and less pronounced 27 A who B that C what D where 28 A much B each C any D every 29 A look B place C point D mark 30 A as well as B but C because D so 31 A flies B walks C passes D goes Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35 LITTER ON MOUNT EVEREST Mount Everest is the highest mountain in the world It is also the highest trash pile in the world About 400 people try to reach the top every year Having many climbers means a lot of trash It is very dangerous to climb Mt Everest The air is very thin and cold Most people carry bottles of oxygen; they could die without it When the oxygen bottles are empty, people throw them on the ground When strong winds rip their tents, people leave them behind They don't have the energy to take the trash away They only have enough energy to go down the mountain safely Trash is a terrible problem Since people first began to climb Mt Everest, they have left 50,000 kilos of trash on the mountain Several groups have climbed the mountain just to pick up the trash When people plan to climb the mountain, they have to plan to take away their trash 32 What is the main topic of the passage? A Climbing safely B A problem with trash C A dangerous mountain D Wind on the mountain 33 Where climbers put their empty oxygen bottles? A On their back B On the ground C In their tents D In trash cans C Strong winds D Tents 34 What does the word "them" in the passage refer to? A Other climbers B Oxygen bottles 35 The word "problem" in paragraph could be best replaced by A damage B event C advantage D trouble 36 All of the following statements are false about trash in Mt Everest EXCEPT _ A Special groups will pick up all the trash B The wind will blow the trash away C All climbers leave the trash in Mt Everest D Other climbers will use the trash later 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 37 The journalist refused to disclose the source of his information A conceal B reveal C open D shut 38 The soup was so tasty that Harry asked for another serving A delicious B soft C tough D awful Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42 How children learn about wildlife? And is what they learn the sort of thing they should be learning? It is my belief that children should not just be acquiring knowledge of animals but also developing attitudes and feelings towards them based on exposure to the real lives of animals in their natural habitats But is this happening? Some research in this area indicates that it is not Learning about animals in school is often completely disconnected from the real lives of real animals, with the result that children often end up with little or no understanding or lasting knowledge of them They learn factual information about animals, aimed at enabling them to identify them and have various abstract ideas about them, but that is the extent of their learning Children's storybooks tend to personify animals as characters rather than teach about them For direct contact with wild and international animals, the only opportunity most children have is visiting a zoo The educational benefit of this for children is often given as the main reason for doing it but research has shown that zoo visits seldom add to children's knowledge of animals – the animals are simply like exhibits in a museum that the children look at without engaging with them as living creatures Children who belong to wildlife or environmental organizations or who watch wildlife TV programmes, however, show significantly higher knowledge than any other group of children studied in research The studies show that if children learn about animals in their natural habitats, particularly through wildlife-based activities, they know more about them than they as a result of visiting zoos or learning about them in the classroom Research has also been done into the attitudes of children towards animals It shows that in general terms, children form strong attachments to individual animals, usually their pets, but not have strong feelings for animals in general This attitude is the norm regardless of the amount or kind of learning about animals they have at school However, those children who watch television wildlife programs show an interest in and affection for wildlife in its natural environment, and their regard for animals in general is higher (Adapted from New English File, by Christina Latham -Koenig, Oxford University Press) 39 What could be the best title for the passage? A Zoos: The Best Opportunity to Learn About Animals B Methods of Learning About Animals at School C Research on Learning About Animals D Learning About Animals at School 40 The word "disconnected" in paragraph is closest in meaning to A removed B separated C disagreed 41 What opinion does the writer express in the second paragraph? A The amount of acquired knowledge about animals at school is adequate B Children's storybooks are an effective way of teaching them about animals C Children's learning about animals at school has the wrong emphasis D What children learn about animals at school is often inaccurate 42 The word "They" in paragraph refers to _ D divided A animals B ideas C children D storybooks 43 Which of the following is NOT true according to the passage? A Learning about animals in their natural habitats teaches children more about animals than other methods B Children's storybooks give factual information about animals C Zoo visits have less educational benefit than they are believed to have D The writer raises the issue of the outcome of what children learn about animals 44 It can be inferred from paragraph that children's attitudes to animals A depend on whether or not they have pets B differ from what adults might expect them to be C based on how much they know about the animals D are not affected by what they learn about them at school 45 The word "regard" in paragraph is closest in meaning to A sympathy B opinion C attitude D respect 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 primary stress in each of the following questions 46 A singer B hostel C effect D beauty 47 A furniture B attention C investment D computer Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in 48 "I'll tell you about this tomorrow, Mary." said Tom A Tom told Mary that he will tell her about that tomorrow B Tom told Mary that she would tell him about that the day before C Tom told Mary that I would tell you about that the next day D Tom told Mary that he would tell her about that the next day 49 It's not compulsory for freshmen to register this course A Freshmen shouldn't register this course B Freshmen don't have to register this course C Freshmen can't register this course D Freshmen ought not to register this course 50 My brother started studying French three years ago A My brother hasn't studied French for three years B My brother studied French for three years ago C My brother studies French for three years D My brother has studied French for three years ĐỀ THI THỬ TỐT NGHIỆP THPT 2023 KÌ THI TỐT NGHIỆP TRUNG HỌC PHỔ THÔNG NĂM 2023 Bài thi: NGOẠI NGỮ; Môn thi: TIẾNG ANH SỞ GIÁO DỤC VÀO TẠO TUN QUANG Mơn thi: TIẾNG ANH (Đề thi có 04 trang) Thời gian làm bài: 60 phút, không kể thời gian phát đề HƯỚNG DẪN GIẢI CHI TIẾT Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part A date B cat C fan D band Giải thích: A date /deɪt/ (n): ngày B cat /kæt/ (n): mèo C fan /fæn/ (n): quạt D band /bænd/ (n): ban nhạc Đáp án A có âm “a” phát âm /eɪ/, đáp án lại phát âm /æ/ → Chọn đáp án A A there B throw C threat D through Giải thích: A there /ðeər/ (adv): B throw /θrəʊ/ (v): ném, vứt C threat /θret/ (n): mối đe dọa D through /θruː/ (prep): xun qua, thơng qua Đáp án A có âm “th” phát âm /ð/, đáp án lại phát âm /θ/ → Chọn đáp án A Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions Sarah quit smoking two months ago She broke a she had had for more than half of her life A sweat Giải thích: Kiến thức từ vựng: B habit C fire D favour - sweat (n): mồ - habit (n): thói quen → break/kick a habit: bỏ thói quen - fire (n): lửa, đám cháy - favour (n): giúp đỡ Tạm dịch: Sarah bỏ hút thuốc vào hai tháng trước Cô bỏ thói quen mà có nửa đời → Chọn đáp án B We finally finished the project 2020 A during B on C at D in Giải thích: Giới từ: Trước năm → dùng “in” Tạm dịch: Chúng cuối hoàn thành dự án vào năm 2020 → Chọn đáp án D A new community house _ in our neighborhood A has built B build C builds D was built Giải thích: Câu bị động (Passive voice): Câu bị động QKĐ: was/were + V3/V-ed Tạm dịch: Một nhà cộng đồng xây dựng khu sống → Chọn đáp án D I will call and tell you something interesting _ A when I come home after work B when I had come home after work C when I was coming home after work D when I came home after work Giải thích: Hịa hợp thì: TLĐ + liên từ + HTĐ/HTHT Tạm dịch: Tôi gọi điện kể cho bạn nghe vài chuyện thú vị nhà sau làm → Chọn đáp án A Jane _ the word in the dictionary whenever she is not sure of its spelling or meaning A looks up B turns on Giải thích: Kiến thức cụm động từ (Phrasal verbs): - look up something: tra cứu C takes after D stands for - turn on something: bật - take after somebody/something: giống ai/cái - stand for something: viết tắt cho Tạm dịch: Jane tra cứu từ từ điển cô khơng cách phát âm nghĩa → Chọn đáp án A She has been writing to him since she _ his email A will have B is having C had D has Giải thích: Hịa hợp thì: HTHT/HTHTTD + since + QKĐ Tạm dịch: Cô viết thư cho anh kể từ nhận email anh → Chọn đáp án C Your sister is cooking lunch in the kitchen, _? A is she B was she C wasn’t she D isn’t she Giải thích: Câu hỏi (Tag questions): Mệnh đề khẳng định → câu hỏi phủ định Mệnh đề dùng tobe HTTD → câu hỏi dùng “am/is/are” ==> Câu hỏi đuôi dùng “isn’t she” Tạm dịch: Chị bạn nấu bữa trưa bếp, có không? → Chọn đáp án D 10 The police _ their attention to the events that led up to the accident A confined B confirmed C completed D contained Giải thích: Kiến thức từ vựng: - confine (v): hạn chế, giới hạn → confine something to something: giới hạn với - confirm (v): xác nhận - complete (v): hoàn thành - contain (v): chứa, kiềm chế Tạm dịch: Cảnh sát giới hạn quan tâm với kiện dẫn đến vụ tai nạn → Chọn đáp án A 11 I wanted to take a photo of the man _ to one of the guests near the window A have talked Giải thích: B talked C talking D was talking C Sure, it's delicious D Yes, I'd like some fish and chips Giải thích: A Được, hóa đơn tơi B Cảm ơn, tơi có đủ C Chắc chắn rồi, ngon D Vâng, cho tơi cá khoai tây chiên Tạm dịch: Daisy nhà hàng gần nhà - Người phục vụ: “Tơi lấy đơn gọi quý khách chưa, thưa cô?” - Daisy: “Vâng, cho tơi cá khoai tây chiên.” → Chọn đáp án D Mark the letter A, B, c, or D on your answer sheet to indicate the sentence that best combines 25 Joe is not here with us He will know how to fix this technical issue A If only Joe were here with us to help fix this technical issue B Provided that Joe is here with us, he won't know how to fix this technical issue C Joe will know how to fix this technical issue even if he is not here with us D We wish Joe had been here with us and fix this technical issue Giải thích: Joe khơng có Anh biết cách sửa vấn đề kỹ thuật A Giá mà Joe với để giúp sửa vấn đề kỹ thuật B Nếu Joe với chúng ta, anh cách sửa vấn đề kỹ thuật C Joe biết cách sửa vấn đề kỹ thuật anh khơng có D Sai cần lùi QKD → Chọn đáp án A 26 The marketing team knew they couldn't sign the contract They soon started to blame each other A No sooner had the marketing team started to blame each other than they knew they couldn't sign the contract B As soon as they blamed each other, the marketing team knew they couldn't sign the contract C Hardly had the marketing team known they couldn't sign the contract when they started to blame each other D Not only could the marketing team sign the contract but they also blamed each other Giải thích: Đội ngũ marketing biết họ ký kết hợp đồng Họ liền bắt đầu đổ lỗi cho A Ngay đội ngũ marketing bắt đầu đổ lỗi cho họ biết họ ký kết hợp đồng B Ngay họ đổ lỗi cho nhau, đội ngũ marketing biết họ ký kết hợp đồng C Ngay đội ngũ marketing biết họ khơng thể ký kết hợp đồng họ bắt đầu đổ lỗi cho D Đội ngũ marketing không ký kết hợp đồng mà cịn đổ lỗi cho → Chọn đáp án C Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks Why is culture important and how does it answer the question "What is cultural identity?" Culture is the underlying foundation of traditions and beliefs (27) _ help a person relate to the world around them It is the basis for (28) superstitions they may have It is the aversion to specific types of meat, or which days you can work on Culture gives us a definite starting (29) when beginning to search for our roots Knowing where a person comes from will help to define how they look at their family obligations (30) how they celebrate important milestones in life As a person has given up their cultural identity, they can no longer identify themselves with the things that were once the most important things in their lives They lose direction As time (31) by and they continue to forget about their past and their natural traditions, their identity becomes less and less pronounced Giải thích: TẠM DỊCH: Why is culture important and how does it answer Tại văn hóa lại quan trọng trả lời câu hỏi the question "What is cultural identity?"? Culture is “Bản sắc văn hóa gì?” nào? Văn hóa the underlying foundation of traditions and beliefs tảng truyền thống niềm tin giúp that help a person relate to the world around them người liên hệ với giới xung quanh Nó It is the basis for any superstitions they may have móng cho mê tín mà họ có Đó It is the aversion to specific types of meat, or which ác cảm với loại thịt cụ thể ngày mà bạn days you can work on Culture gives us a definite làm việc Văn hóa mang đến cho xuất starting point when beginning to search for our phát điểm rõ ràng bắt đầu tìm kiếm nguồn cội roots Knowing where a person comes from will Việc biết nơi người xuất thân giúp xác định help to define how they look at their family cách họ nhìn nhận nghĩa vụ gia đình obligations as well as how they celebrate important cách họ ăn mừng dấu mốc quan trọng milestones in life đời As a person has given up their cultural identity, Khi người từ bỏ sắc văn hóa mình, họ they can no longer identify themselves with the khơng cịn xác định things that were once the most important things in thứ quan trọng sống their lives They lose direction As time goes by and Họ phương hướng Khi thời gian trôi they continue to forget about their past and their họ tiếp tục quên khứ truyền thống tự nhiên natural traditions, their identity becomes less and mình, sắc họ trở nên ngày mờ nhạt less pronounced 27 A who B that C what D where Giải thích: Mệnh đề quan hệ (Relative clause): Dùng đại từ “that” làm chủ ngữ thay cho danh từ vật đứng trước Tạm dịch: Culture is the underlying foundation of traditions and beliefs that help a person relate to the world around them (Văn hóa tảng truyền thống niềm tin giúp người liên hệ với giới xung quanh.) → Chọn đáp án B 28 A much B each C any D every Giải thích: A much + N (khơng đếm được): nhiều B each + N (số ít): C any + N (đếm được/không đếm được): D every + N (số ít): Tạm dịch: It is the basis for any superstitions they may have (Nó móng cho mê tín mà họ có.) → Chọn đáp án C 29 A look B place C point D mark Giải thích: A look (n): nhìn B place (n): địa điểm C point (n): điểm → a starting point: điểm bắt đầu D mark (n): điểm số Tạm dịch: Culture gives us a definite starting point when beginning to search for our roots (Văn hóa mang đến cho xuất phát điểm rõ ràng bắt đầu tìm kiếm nguồn cội.) → Chọn đáp án C 30 A as well as B but Giải thích: A as well as (conj): như, B but (conj): C because: D so (conj): C because D so Tạm dịch: Knowing where a person comes from will help to define how they look at their family obligations as well as how they celebrate important milestones in life (Việc biết nơi người xuất thân giúp xác định cách họ nhìn nhận nghĩa vụ gia đình cách họ ăn mừng dấu mốc quan trọng đời.) → Chọn đáp án A 31 A flies B walks C passes D goes Giải thích: Kiến thức cụm động từ (Phrasal verbs): go by: trôi qua (thời gian) Tạm dịch: As time goes by and they continue to forget about their past and their natural traditions, their identity becomes less and less pronounced (Khi thời gian trôi qua họ tiếp tục quên khứ truyền thống tự nhiên mình, sắc họ trở nên ngày mờ nhạt.) → Chọn đáp án D Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 31 to 35 LITTER ON MOUNT EVEREST Mount Everest is the highest mountain in the world It is also the highest trash pile in the world About 400 people try to reach the top every year Having many climbers means a lot of trash It is very dangerous to climb Mt Everest The air is very thin and cold Most people carry bottles of oxygen; they could die without it When the oxygen bottles are empty, people throw them on the ground When strong winds rip their tents, people leave them behind They don't have the energy to take the trash away They only have enough energy to go down the mountain safely Trash is a terrible problem Since people first began to climb Mt Everest, they have left 50,000 kilos of trash on the mountain Several groups have climbed the mountain just to pick up the trash When people plan to climb the mountain, they have to plan to take away their trash Giải thích: TẠM DỊCH: LITTER ON MOUNT EVEREST RÁC TRÊN NÚI EVEREST Mount Everest is the highest mountain in the Núi Everest núi cao giới Nó world It is also the highest trash pile in the world đống rác cao giới Khoảng 400 người cố About 400 people try to reach the top every year gắng leo lên đỉnh năm Việc có nhiều người leo Having many climbers means a lot of trash núi đồng nghĩa với việc có nhiều rác It is very dangerous to climb Mt Everest The air is Việc leo lên núi Everest nguy hiểm Khơng khí very thin and cold Most people carry bottles of loãng lạnh Hầu hết người mang theo oxygen; they could die without it When the oxygen bình khí oxi; họ chết khơng có Khi bottles are empty, people throw them on the bình khí oxi cạn đi, họ vứt chúng mặt đất Khi ground When strong winds rip their tents, people gió mạnh xé toạc lều họ, họ bỏ lại leave them behind They don't have the energy to Họ sức để mang rác Họ có đủ sức để take the trash away They only have enough energy an toàn xuống núi to go down the mountain safely Trash is a terrible problem Since people first Rác vấn đề tồi tệ Kể từ lần began to climb Mt Everest, they have left 50,000 người bắt đầu leo lên núi Everest, họ để lại kilos of trash on the mountain Several groups have 50,000 kg rác núi Một số nhóm leo lên núi climbed the mountain just to pick up the trash để thu dọn rác Khi người lên kế hoạch leo When people plan to climb the mountain, they have núi, họ phải lên kế hoạch để dọn dẹp rác to plan to take away their trash 32 What is the main topic of the passage? A Climbing safely B A problem with trash C A dangerous mountain D Wind on the mountain Giải thích: Chủ đề đoạn văn gì? A Leo núi an toàn B Vấn đề với rác thải C Một núi nguy hiểm D Gió núi Tóm tắt: Đoạn văn nói tình trạng rác bị vứt bừa bãi núi Everest ==> Vấn đề với rác thải → Chọn đáp án B 33 Where climbers put their empty oxygen bottles? A On their back B On the ground Giải thích: Những người leo núi bỏ bình oxi rỗng họ đâu? A Sau lưng họ B Trên mặt đất C Trong lều họ D Trong thùng rác Thông tin: C In their tents D In trash cans When the oxygen bottles are empty, people throw them on the ground (Khi bình khí oxi cạn đi, họ vứt chúng mặt đất.) → Chọn đáp án B 34 What does the word "them" in the passage refer to? A Other climbers B Oxygen bottles C Strong winds D Tents Giải thích: Từ “them” đoạn văn đề cập đến gì? A Những người leo núi khác B Các bình khí oxi C Những gió mạnh D Những lều Thơng tin: When the oxygen bottles are empty, people throw them on the ground When strong winds rip their tents, people leave them behind (Khi bình khí oxi cạn đi, họ vứt chúng mặt đất Khi gió mạnh xé toạc lều họ, họ bỏ chúng lại.) → Chọn đáp án D 35 The word "problem" in paragraph could be best replaced by A damage B event C advantage D trouble Giải thích: Từ “problem” đoạn có hể thay từ A damage (n): thiệt hại B event (n): kiện C advantage (n): lợi ích D trouble (n): rắc rối, vấn đề problem (n): vấn đề = trouble → Chọn đáp án D 36 All of the following statements are false about trash in Mt Everest EXCEPT _ A Special groups will pick up all the trash B The wind will blow the trash away C All climbers leave the trash in Mt Everest D Other climbers will use the trash later Giải thích: Tất nhận định sau rác núi Everest sai ngoại trừ A Các nhóm đặc biệt thu nhặt tất rác