tìm 1 số có 3 chữ số , chữ số hàng đơn vị là 4 . Biết rằng khi xóa chữ số 4 thì giảm 175 đơn vị.Tìm số có 3 chữ số đó

Bài 1: Tính thuận tiện a, 0,2468 + 0,08 × 0.4 × 12,5 × 2,5 + 0,7532 b, 8,12 × 6 + 16,24 × 4 - 4,06 × 8 c, 20,1 × 98 + 20,1 × 5 - 20,1 × 3 d, 444 × 4,26 - 222 × 7,52

Giải hộ mình với mình đang cần gấp

Câu 4. Đuôi của thằn lằn bị đứt có thể mọc lại hay không? Cơ sở của quá trình này là gì?

10g hh X gồm metan,propen,axetilen làm mất màu 48g Br2 trong dd.Mặt khác 13,44l khí X tác dụng vừa đủ với AgNO3/NH3 được 36g kết tủa.%mCH4 là bao nhiêu?

Tìm các số tự nhiên x, biết : A)x<3,001 B)10,99<x<14,99

chính sách của nhà tống và nhà nguyên có điểm gì giống nhau

bài 5 hình dưới, yêu cầu lời giải đầy đủ và chi tiết

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: Hooked on the Net B: Impact of Internet on teens C: The advantage of the Internet D: A guide to the Internet 10 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: looking at B: taking after C: taking over D: taking care of 11 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: can lead to financial problems B: helps people kill time C: is not the same as gambling D: is not an illness 12 Choose the sentence so that it has similar meaning to the first one. Question 24. How about going window-shopping this afternoon? A: Will we go window-shopping this afternoon? B: Shall we going window-shopping this afternoon? C: Shall we go window-shopping this afternoon? D: What about to go window-shopping this afternoon? 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. Which of the followings is NOT true? A: Internet addiction can cause suicide behaviors. B: Teenagers who are hooked on computer games can suffer from IAS. C: Many Internet addicts spend more than 40 hours a week online. D: IAS is recognized as a new illness. 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’s her favorite activity in her free time? B: What activity does she like doing most? C: What does she like most? D: What’s leisure activity does she like most? 17 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: beloved B: domestic C: weird D: virtual 18 Choose the word whose stressed pattern is pronounced differently from the others. A: event B: teenager C: relax D: adore 19 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: pottery making B: bird watching C: model making D: woodcarving

Biết vùng Đồng bằng sông Hồng có diện tích là 14962,5 km2, dân số là 18545,2 nghìn người. Vậy, mật độ dân số của vùng Đồng bằng sông Hồng là bao nhiêu ? A. 121,4 người/km2. B. 1239,4 người/km2. C. 206,6 người/km2. D. 91,5 người/km2. NHỜ CÁC CAO NHÂN CHỈ GIÚP Ạ!