khi cho 600ml dung dịch NaOH 1M tác dụng hết với dung dịch H2SO4 2M tạo thành muối trung hòa. Thể tích dung dịch H2SO4 2M là bao nhiêu?

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I. Choose the word (A, B, C or D) whose stress is different from the others. 1. A. cartoon B. funny C. little D. channel 2. A. education B. entertaining C. comedian D. exhibition 3. A. Jupiter B. universe C. stadium D. Pacific 4. A. squirrel B. giraffe C. ocean D. garden 5. A. newspaper B. designer C. reporter D. adventure II. Choose the word (A, B, C or D) whose underlined part is pronounced differently. 6. A. something B. theatre C. neither D. monthly 7. A. other B. thinking C. healthy D. birthday 8. A. Thailand B. weatherman C. anything D. Thanksgiving 9. A. earth B. through C. both D. there 10. A. growth B. three C. feather D. thing III. Choose the correct form of the words (A, B, C or D) to complete the sentences. 11. Nowadays, foreign game shows are more______ with teenagers than they used to be. They can watch them easily on cable TV A. popular B. unpopular C. unpopularity D. popularity 12. She encourages her children to watch _______ programmes on TV because they help them improve their knowledge. A. educating B. education C. educationalty D. educational 13. They want to produce a music programme______ to attract a lot of people to follow. A. entertainer B. entertainingly C. entertaining D. entertainment 14. Some ______ are keen on watching science or cuisine programmes. A. viewing B. viewer C. viewers D. viewed 15. She prefers ______ cartoons to listening to pop music. A. watching B. watch C. to watch D. watched IV. Choose the best word or phrase (A, B, C or D) to complete each sentence. 16. VTV2 and VTV3 are well- known _____ channels in Viet Nam. A. foreign B. national C. local D. international 17. He is one of the most famous ___ in Viet Nam. You can see him appear on weather forecast every day. A. MCs B. comedians C. newsreaders D. weathermen 18. I need a _____ immediately because I can't turn on your TV without it when I sit on the sofa. A. TV screen B. TV viewer C. remote control D. volume button 19. My father likes watching _____ programmes. They have a lot of football matches or boxing competitions. A. sports B. animals C. news D. films 20. The main character in this comedy show looks so _____. His motions and actions always make me laugh a lot. A. boring B. clumsy C. skilful D. intelligent 21. I watch The Adventures of Tin Tin on TV every Saturday. It's a _____ about a smart boy and his loyal small dog. A. documentary B. cartoon series C. broadcast D. weather forecast. 22. I like watching science channels because I can _____ a lot of interesting things about my life. A. discover B. test C. instruct D. compete 23. It's difficult for me to decide to watch between two programmes. They're ____ different channels_____ the same time. A. on/ in B. on/ at C. from/ at D. from/ in 24. I can't watch my favourite game show _____ my father is watching news at present. A. although B. so C. and D. because 25. He likes watching animals programmes, ______ he also likes watching comedy shows. A. and B. so C. but D. or 26. The TV schedule today is so boring. _____ I decide to go out with my friends. A. although B. so C. because D. but 27. _____ he's a famous actor, he seems to be very friendly with his fans. A. although B. So C. Because D. And 28. _____ is dancing in your room? – It's my sister A. Why B. How C. What D. Who 29. __________ is this documentary on? – About half an hour. A. How far B. How much C. How long D. How often 30. ____ of music do you like? – I like Pop and Rock. A. How many kind B. How kind C. What kind D. What much kind V. Choose the best response (A, B, C or D) to complete each of conversation. 31. – How often do you watch English cartoons? - _________________________________ A. Not much. I can watch them all day. B. Not me. Watching cartoons is my sister's hobby. C. Very often. I watch them after having dinner. D. It's up to my parents. 32. – How much does your family pay for the bill of cable TV? - __________________________________________ A. About 75 thousand dong per month. B. From twice to four times a week. C. Very cheap. We bought it two months ago. D. It's vey lively. It costs 50.000 dong .

Bài 4: Cho  có AB = 9cm , AC=12cm,BC=15cm a) Chứng minh tam giác ABC  là tam giác vuông. b) Vẽ trung tuyến  AM từ kẻ MH ^ AC Trên tia đối tia MH lấy điểm K sao cho MK = MH Chứng minh MHC = MKB Bài 5: Cho tam giác ABC vuông tại A Đường phân giác BD (D thuộc AC )Kẻ HD vuông góc với BC (H thuộc BC) a) Chứng minh AD =DH b) Gọi I là giao điểm của BD và AH Chứng minh BD là đường trung trực của AH Bài 6: Cho tam giác ABC (AB lớn hơn AC )Gọi M  là trung điểm của cạnh BC  kẻ BK và CH  vuông góc với AM a) Chứng minh B MK = CMK b) Cho BC = 10cm , MK = 3cm Tính độ dài đoạn CH c) Chứng minh CK song song với BH Bài 7: Hai đoạn thẳng BH  và CH cắt nhau tại trung điểm O  của mỗi đoạn thẳng. a) Chứng minh AOC =BOD b) Qua O vẽ một đường thẳng cắt AD và BC lần lượt tại E và  F Chứng minh OÉ = OF c) Chứng minh BC song song AD Gợi ý các bài 4 , bài 5, bài 6, bài 7 các em vẽ hình , ghi giả thiết- kết luận sau đó chứng minh theo các trường hợp bằng nhau cạnh –cạnh-cạnh ; cạnh – góc –cạnh ; góc –cạnh –góc , hoặc các trường hợp bằng nhau của tam giác vuông suy ra các cặp cạnh hoặc các cặp góc tương ứng bằng nhau Chúc các em học sinh ôn và làm bài tập tốt. GV : NGUYỄN THỊ HOA mọi người ơi giúp mik vs 😭😭 mik cần gấp