Choose the best answer a, b, c or d to complete the sentence. Question 5. How much time do you spend _______ leisure activities? A: on B: with C: for D: in 21 Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. Which of the followings is NOT true? A: Internet addiction can cause suicide behaviors. B: IAS is recognized as a new illness. C: Teenagers who are hooked on computer games can suffer from IAS. D: Many Internet addicts spend more than 40 hours a week online. 22 Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. Question 13. Mary: “Would you like to join our volunteer group this summer?” Peter: “……………………………………….” A: Do you think I would? B: Yes, you are a good friend C: Thanh you so much! D: Yes, I’d love to. Thanks. 23 Mark the letter A, B, C or D to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Question 11. My mother usually spends her free time looking after her cats. A: taking after B: taking care of C: taking over D: looking at 24 Choose the word whose stressed pattern is pronounced differently from the others. A: addicted B: detest C: community D: leisure 25 Choose the sentence so that it has similar meaning to the first one. Question 24. How about going window-shopping this afternoon? A: Shall we go window-shopping this afternoon? B: What about to go window-shopping this afternoon? C: Shall we going window-shopping this afternoon? D: Will we go window-shopping this afternoon?

giúp mk câu 3 mk cần gấp Cho đường tròn (O; R), đường kính AB. Trên tiếp tuyến tại A của đường tròn(O;R) lấy điểm C, kẻ cát tuyến CDE nằm giữa CA và CO, D nằm giữa C và E. Gọi H là hình chiếu của A lên CO, M là giao điểm của DB và CO. CMR 1. Chứng minh tứ giác DMAH nội tiếp 2. Chứng minh: CM.CO=CD.CE 3. Kéo dài AM cắt (O) tại F. Chứng minh E;O;F thẳng hàng. 4. Tính thể tích của hình tạo thành khi quay tam giác ACO quanh cạnh AC, biết CO= 2R

Giúp mình với các bạn ơi Mik cần gấp trong hnay , ai làm dc đầu tiên mik sẽ vote 5* và chọn ctlhn nha,thank mng

1x5+2x6+3x7+...+45x49 1x6+2x7+3x8+...+35x40

Choose the underlined part A, B, C or D that needs correcting. Picture 6 A: A B: B C: C D: D 10 Choose the best answer a, b, c or d to complete the sentence. Question 6. Daisy is _______ social media. She spends lots of time on Facebook and Instagram. A: bored with B: curious about C: addicted to D: tired of 11 Choose the word whose stressed pattern is pronounced differently from the others. A: adore B: event C: relax D: teenager 12 Choose the best answer a, b, c or d to complete the sentence. Question 8. My sister enjoys _______. She usually walks around the mall to look at the goods, but not buying anything. A: going shopping B: window shopping C: doing DIY D: hanging out 13 Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. According to the writer, Internet addiction __________. A: is not the same as gambling B: is not an illness C: can lead to financial problems D: helps people kill time 14 Choose the best answer a, b, c or d to complete the sentence. Question 9. You can raise a ______ pet like a Neopet if you aren’t allowed to own a real pet. A: virtual B: domestic C: beloved D: weird 15 Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. “My favorite leisure activity is people watching.” “_______” A: That’s all right. B: That sounds so weird! C: Sure. It’s very entertaining. D: OK. That’s very kind of you 16 Choose the sentence so that it has similar meaning to the first one. Question 23. What leisure activity does she like most? A: What activity does she like doing most? B: What does she like most? C: What’s leisure activity does she like most? D: What’s her favorite activity in her free time? 17 Choose the best answer a, b, c or d to complete the sentence. Question 10. My favorite hobby is ______. I spend most of my free time making vases and bowls from clay. A: bird watching B: woodcarving C: pottery making D: model making 18 Choose the word whose underlined part is pronounced differently from the others. A: hooked B: socialized C: satisfied D: bored 19 Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 12. Do you adore skateboarding in the park this Sunday. A: fancy B: dislike C: enjoy D: love

Cho Δ ABC vuông tại A. Kẻ đường cao AH. Biết BH = 18 cm; CH = 32cm. Tính các cạnh AB và AC. Cho △ ABC có AB = 9cm; AC = 11cm. Kẻ đường cao AH, biết BH = 26cm. Tính CH ? Cho tam giác ABC cân, AB = AC = 17cm. Kẻ BD  AC. Tính BC, biết BD = 15cm. Bài 6: Cho tam giác ABC. Biết BC = 52cm, AB = 20cm, AC = 48cm. a/ CM: tam giác ABC vuông ở A. b/ Kẻ AH vuông góc BC. Tính AH. Bài 7: Cho tam giác ABC vuông tại A, đường cao AH, trên đó lấy điểm D. Trên tia đối của tia HA lấy E sao cho HE = AD. Đường vuông góc với AH tại D cắt AC tại F. Chứng minh rằng: EB vuông góc EF. Cho △ ABC cân, AB = AC = 17cm. Kẻ BD  AC. Tính BC, biết BD = 15cm. CẢM ƠN BẠN ❤

Bạn nào làm đc ko ạ Xin giúp mk Thank you

Mùa hè năm nọ, bão vào Hà Nội gào rú một đêm, sáng ra mở cửa nhìn sang đền Ngọc Sơn mà hãi. Cây si cổ thụ đổ nghiêng tán cây đè lên hậu cung, một phần bộ rễ bật gốc chỏng ngược lên trời. Lập tức cô nghĩ ngay tới sự khác thường, sự dời đổi, điềm xấu, là sự ra đi của một thời […] Mấy ngày sau, cô kể tiếp, thành phố cho máy cẩu tới đặt bên kia bờ, quàng dây tời vào thân cây si rồi kéo dần lên, mỗi ngày một tí. Sau một tháng, cây si lại sống, lại trổ ra lá non, vẫn là cây si của nhiều thế hệ Hà Nội, nghĩ cứ lạ, tưởng là chết đứt bổ ra làm củi, mà lại sống. Cô nói thêm : “Thiên địa tuần hoàn, cái vào ra của tạo vật không thể lường trước được”. Cô muốn mở rộng sự tính toán vốn dĩ đã rất khôn ngoan của mình lên thêm một tầng nữa chăng, cái tầng vô hình, không thể biết, nhưng phải biết là trên đời này còn có nhiều lý sự không thể biết để khỏi bị bó vào những cái có thể biết. Bà già vẫn giỏi quá, bà khiêm tốn và rộng lượng quá. Một người như cô phải chết đi thật tiếc, lại một hạt bụi vàng của Hà Nội rơi xuống chìm sâu vào lớp đất cổ. Những hạt bụi vàng lấp lánh đâu đó ở mỗi góc phố Hà Nội hãy mượn gió mà bay lên cho đất kinh kỳ chói sáng những ánh vàng. Câu hỏi : Nêu những phẩm chất của nhân vật cô được thể hiện trong đoạn trích

Choose the sentence so that it has similar meaning to the first one. Question 22. She likes to hang out with friends on Saturday evening. A: She’s interested in hang out with friends on Saturday evening. B: She’s interested in hanging out with friends on Saturday evening. C: She’s fancy hanging out with friends on Saturday evening. D: She’s keen in hanging out with friends on Saturday evening. 2 Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. Internet addicts find it hard ___________. A: to spend more time on the Internet B: to spend less time on the Internet C: to lie about the time they spent online D: to use the Internet in the morning 3 Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. The word ‘it’ in paragraph 2 refers to ___________. A: computer B: IAS C: dream D: the Internet 4 Choose the underlined part A, B, C or D that needs correcting. Picture 4 A: A B: B C: C D: D 5 Choose the word whose underlined part is pronounced differently from the others. A: out B: sound C: enough D: found 6 Read the passage carefully, then choose the correct answers. The latest addiction to trap thousands of people is the Internet, which has been blamed for broken relationships, job losses, financial ruin, and even suicide. Psychologists now recognize Internet Addiction Syndrome (IAS) as a new illness that could cause serious problems and ruin many lives. IAS is similar to other problems like gambling, smoking and drinking: addicts have dreams about the Internet; they need to use it as the first thing in the morning; they lie to their parents and partners about how much time they spent online; they wish they could cut down, but are unable to do so. A recent study found that many users spend up to 40 hours a week on the Internet. Some of the addicts are teenagers who are already hooked on computer games and who find it very difficult to resist the games on the Internet. What is the best title of the passage? A: Impact of Internet on teens B: A guide to the Internet C: The advantage of the Internet D: Hooked on the Net 7 Choose the sentence so that it has similar meaning to the first one. Question 25. DIY skills aren’t as hard to learn as I think. A: DIY skills are easier to learn than I think. B: I think DIY skills are easier to learn. C: DIY skills are easier to learn as I think. D: DIY skills are easier to learn. 8 Choose the best answer a, b, c or d to complete the sentence. Question 7. On YouTube you can find many videos on _______ all aspects of your English. A: surfing B: improving C: working D: taking

Bi A khối lượng 500 g đang chuyển động với vận tốc v1=6m/s thì tới đập vào bi B có khối lượng 250g đang đứng yên. Sau va chạm, bi B tiếp tục chuyển động về phía trước với vận tốc v2’=3 m/s. Xem hệ gồm 2 viên bi là hệ cô lập và tương tác xảy ra trên cùng một đường thẳng. Hãy dùng định luật bảo toàn động lượng để tìm vận tốc và chiều của bi A sau va chạm. (không vẽ hình)