Các bạn ơi giúp mình với mình đang cần rất rất gấp: cho tam giác ABC, vẽ tia đối của tia AB rồi lấy trên đó đoạn AD bằng với AC , trên tia đối của tia AC lấy AE=AB. M là trung điểm của BC và N là trung điểm DE. Chứng minh:a, BC=DE; b, CM=DN; c, tam giác AMC= tam giác AND

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28 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. NASA has recently discovered something new about Mars. A: lived on B: got into C: narrowed down D: found out 29 Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions. Picture 2 A: A B: B C: C D: D 30 Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. I’m so excited. I’m going on vacation with my family tomorrow. A: I’m not excited that I’m going on vacation with my family tomorrow. B: I’m excited that I’m going on vacation with my family tomorrow. C: I’m so excited so I can go on vacation with my family tomorrow. D: I’m so excited because I can’t go on vacation with my family tomorrow. 31 Read the following passageand mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. When you hear how I learned a foreign language, you have to remember a few things. In 1993, when I started learning English, no one had heard of the Internet. I wasn’t able to read websites on topics that I found interesting or follow blogs. And I have no idea how I decided which movies to see without my favourite movie review website. My reading practice was limited. All I had were a few books on sale locally. For listening practice, I only had the news and cartoons on cable TV. People bought and rented videos but in Poland there was no spoken English on them. The only way to hear that was to visit the movies. My dictionaries were all in book form until I received my first PC dictionary. It came on at least six disks and had unhelpful explanations and few example sentences. It doesn’t sound very useful but I loved it because of its ability to work with other programs and find English words more quickly. Today, computerized dictionaries have simple explanations and lots of examples. Now I can spend hours on the web, reading about my favourite topics, downloading up-to-date movies, emailing English-speaking friends and posting comments on forums. To watch films in English, Polish people in the 1990s had to ____________________. A: have cable television B: go to the cinema C: rent films on videotape D: watch TV for children 32 Mark the letter A, B, C or D to indicate the most suitable response to complete each of the following exchanges. “Let’s have some coffee.” - “______” A: Sorry. B: Yes, spot on! C: Once in a blue moon. D: I’d love to but I may be awake at night. 33 Read the following passageand mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. When you hear how I learned a foreign language, you have to remember a few things. In 1993, when I started learning English, no one had heard of the Internet. I wasn’t able to read websites on topics that I found interesting or follow blogs. And I have no idea how I decided which movies to see without my favourite movie review website. My reading practice was limited. All I had were a few books on sale locally. For listening practice, I only had the news and cartoons on cable TV. People bought and rented videos but in Poland there was no spoken English on them. The only way to hear that was to visit the movies. My dictionaries were all in book form until I received my first PC dictionary. It came on at least six disks and had unhelpful explanations and few example sentences. It doesn’t sound very useful but I loved it because of its ability to work with other programs and find English words more quickly. Today, computerized dictionaries have simple explanations and lots of examples. Now I can spend hours on the web, reading about my favourite topics, downloading up-to-date movies, emailing English-speaking friends and posting comments on forums. The writer says he doesn’t know ____________________. A: which topics he found interesting B: when he first heard about the internet C: how he used to choose films to watch D: where he bought English book online from