4. Hãy tìm và kể ra một số ứng dụng của tính đối xứng trong thực tiễn mà em biết.

3. Hãy quan sát xung quanh và chỉ ra những hình: a) Có trục đối xứng; b) Có tâm đối xứng; c) Vừa có trục đối xứng vừa có tâm đối xứng.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined bold word(s) in each of the following questions. 19. Question 19. Every woman who has enough criteria can join the beauty contest irrespective of their background. A. under guarantee B. in consideration of C. on account of D. regardless of 20. Question 20. He has not been offered the job because he cannot meet the requirements of the company A. understand B. satisfy C. see D. qualify Câu 21 - 22 Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined bold word(s) in each of the following questions 21. Question 21. I’ve asked you umpteen times to clean your room! When will you do it? A. most of the time B. infinite times C. many times D. at no time at all 22. Question 22. Most counselors are trained in order to be able to reassure and console students who have academic or personal problems. A. discourage B. argue C. please D. satisfy Câu 23 - 24 Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to 23. Question 23. Tom: __________________ Mike: I won’t say no! A. How are things with you? B. What’s your favorite, tea or coffee? C. What about playing badminton this afternoon? D. Do you know where my shoes are, Mike? 24. Question 24. Jane is talking to her teacher about her assignment Jane: You must have found reading my essay tiring Teacher: __________________. I enjoyed it! A. At all costs. B. Just in case. C. Never mind D. Not in the least. Câu 25 - 29

2. Cho các hình sau đây: (1) Đoạn thẳng AB; (2) Tam giác đều ABC; (3) Hình tròn tâm O; (4) Hình thang cân ABCD (có đáy lớn CD); (5) Hình thoi ABCD. Trong các hình nói trên: a) Hình nào có trục đối xứng? Chỉ ra trục đối xứng của hình đó. b) Hình nào có tâm đối xứng? Chỉ ra tâm đối xứng của hình đó.

Cho ∆ABC cân tại A và M là trung điểm của BC . Kẻ MH , MK lần lượt vuông góc với AB và AC ( H thuộc AB , K thuộc AC ) a) chứng minh ∆MBH = ∆MCK b) cho BC = 8cm , BH = 3cm . Tính độ dài cạnh MK c) chứng minh HK// BC d) Cho HK= 1/2 BC . Khi đó ∆ABC là tam giác gì ? Vì sao? mình cần câu d

Put the verbs in brackets in the correct tense form So you ask me if I (see ).............that movie about Ha Noi ? Yes , i (see)............it many times. In fact I (visit)............. Ha Noi 3 times. I likes it so much that I always want to go back ! I (meet)..........many amazing people there.Some of them (Become)............my good friends.I (eat).........Ha Noi Pho ,(drink)............ Ha Noi coffee, and (walk)...............on those streets soaked with hoa sua. I ( do)....... some shopping in its lively old Quarter, and (watch).......... the sun setting on the beautiful West lake.

Hãy vẽ các hình chữ nhật trên một miếng bìa (mỏng) theo cách như ở Hình 96, sau đó cắt, gấp lại và dán mép để tạo ra hình hộp có nắp.

Gấp và cắt giấy thành các chữ cái in hoa theo hướng dẫn sau đây:

Tìm hiểu thêm về tính đối xứng trong tự nhiên (với vật chất, cây cối, chim, thú); trong nghệ thuật, trang trí; trong thiết kế, công nghệ,...

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of 5. Question 5. The price of fruit has increased recently, ______ the price of vegetables has gone down. A. whereas B. whether C. when D. otherwise 6. Question 6. Had she worked harder last summer, she ______. A. wouldn’t have been sacked B. wouldn’t have sacked C. wouldn’t sack D. wouldn’t be sacked 7. Question 7. ______ whose fauna and flora create an enchanted world. A. A biological park B. Where a biological park C. It is a biological park D. Being a biological park 8. Question 8. She is a fast typist, but she usually makes quite a lot of spelling ______. A. wrongs B. mistakes C. faults D. tricks 9. Question 9. She was asked to give a full ______ of her camera when she reported it stolen. A. account B. detail C. information D. description 10. Question 10. You’ll get ________shock if you touch ________ live wire with that screwdriver. A. an/the B. x/the C. a/a D. an/the 11. Question 11. Max-light hopes their new advertising campaigns will_________ flashlight sales. A. boost B. link C. fixture D. celebrate 12. Question 12. I can’t see us beating them at tennis this year. We are so out of _________. A. step B. fitness C. practice D. breath 13. Question 13. I phoned him late yesterday but he didn’t answer. He _________ then. A. must sleep B. must be slept C. must be sleeping D. must have been sleeping 14. Question 14. After six months of convalescence in the nursing home, Tim is finally on the_______________. A. run B. go C. mend D. top 15. Question 15. They exchanged letters for 15 years, but they never_________ met in person A. positively B. genuinely C. truly D. actually 16. Question 16. The company was so successful during the 1990s that it ______ 500 new employees in a period of six month. A. put on B. took on C. caught on D. laid on 17. Question 17. According to a recent survey, most people are on good ______ with their neighbors. A. relations B. acquaintance C. relationships D. terms 18. Question 18. I hope the soft skills course starts this term. We are all as keen as____ to get going. A coffee B. a gigolo C. mustard D. cornflakes