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Cho ABC nhọn( AB < AC). Kẻ các đường cao BD, CF cắt nhau tại H. Chứng minh: a/ ABD tương ứng ACE b/ AEH tương ứng CEB

B. Read the text , then answer the questions. (3pts) WHO WANTS TO BE A MILLIONAIRE? One of the most popular quiz programmes on television in the world is called Who Wants To Be A Millionaire?In Britain, the quiz master is Chris Tarrant. He asks the contestants fifteen questions. The first questions are easy but later they are more difficult. If you can answer the fourteenth question, you can win £500,000. You can win a million pounds if you can answer the last question. Of course, the last question is very difficult. All the questions on Who Wants To Be A Millionaire? are multiple-choice questions. After you hear the question, you see four answers. Only one answer is correct. You have to choose the correct answer. If you don’t know the answer to a question, there are three ways you can get help: you can ask the quizmaster to take away two wrong answers: you can ask the studio audience which answer is right; or you can telephone a friend and ask for help. You can only do these things once. Very few people win the million pounds. The first person won a millon pounds one year after the programme started. Today, Who Wants To Be A Millionaire?can be seen in more than 100 countries and is now the world’s most popular quiz programme. Choose the best answer for each question: 5. Who does Chris Tarrant ask? A. the contestants B. the studio audience C. the quizmaster 6. Are there fifteen questions do you have to answer? A. No, there are not B. Yes, there are C. There are sixteen questions 7. How much do you win for the last question? A. a million pounds B. £400,000 C. £500,000 8. How many ways can you get help? A. four ways B. three ways C. five ways 9. When did the The first person win a millon pounds? A. two year ago B. last week C. one year after the programme started. 10. In how many countries can you watch the quiz show? A. 100 countries B. 1 country C. in more than 100 countries

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Cho tam giác cân ABC có đáy BC và góc A= 20°. Trên nửa mặt phẳng bờ AC không chứa điểm B lấy điểm D sao cho DA = DB và DAC = 40°. Gọi E là giao điểm của AC và BD. 1). Chứng minh tứ giác ABCD là tứ giác nội tiếp. 2). Tính góc AED

tiếp nhaaaa !! Vote 5saoo nè !!

Nêu ra những dẫn chứng để chứng minh sự giãn dị của bác hồ trong sinh hoạt, lối sống ,việc làm.(Đức tính giản dị của bác hồ)

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I. CHOOSE THE BEST ANSWER: 1. I am delighted ________you passed your exam. A. that B. to C. but D. so 2. It is impossible ________ in the center of Newtown. A. park B. to park C. parking D. parked 3. Sooner or later a satellite ________by a large piece of rubbish. A. will destroy B. will destroyed C. will be destroyed D. will been destroyed 4. Beer ________for breakfast in England years ago. A. used be drunk B. used to be drunk C. used to drunk D. used to be drank 5. We were delighted ________your letter yesterday. A. to get B. got C. getting D. get 6. Football is a popular sport. It ______________ in many countries in the world. A. was played B. plays C. is played D. played 7. He _____________ by the loud noise at the supermarket yesterday A. surprised B. surprises C. is surprised D. was surprised 8. The five great lakes of the world ____________ in Michigan. A. can find B. can be found C. can found D. find 9. Covid-19 patients ____________ very good care at that hospital. A. are giving B. are gave C. are give D. are given 10. Much of the world’s coffee _________________ in Brazil A. is grown B. are grown C. is grow D. are grow