A series of large ocean waves, usually caused by an underwater earthquake or a volcanic explosion.

tìm x, biết: 11/12 - (2/5 -x) = 3/4

1.Vegetarians don't eat meat. 🡺 If you're a vegetarian, ................................................... 2. People who live in a cold country don't like hot weather. 🡺 If you live ......................................................................... 3. Teachers have to work very hard. 🡺 If you're a teacher, ........................................................................ 4. People who do a lot of exercise stay fit and healthy. 🡺 If you .................................................................... 5. Mechanics understand engines. 🡺 If you're a ..................................................... 6. People who read newspapers know what's happening in the world. 🡺 If you .......................................................... 7. Work harder or you will lose your job. →If................................................................... 8. Pay attention to the teacher or you won’t understand the lessons. →If................................................................................. 9. Go to bed early or you can’t get up early the next morning. →If..................................................................... 10. Save money now or you will be in debt in the future. →If................................................................... 11. Read more referent books if you want to win a place at university. →If..................................................................... 12. Driving more carefully or you will have an accident. →If................................................................... 13. Brush your teeth often in order not to get toothache. →If....................................................... 14. Listen carefully or you won’t know what to do. →If........................................................ 15. If Andrew is not lazy, he will pass the final examination. →Unless……………………………………………………………… 16. John will not catch the train if he doesn’t run faster. →Unless………………………………………………………………. 17. The tree will die if it isn’t watered every day. →……………………………………………………………………………….. 18. Life won’t be very easy if we don’t earn lots of money. →Unless………………………………………………………………………………. 19. If you don’t practice more often, your English won’t be better. →Unless………………………………………………………………………………… 20. Jack will be dismissed if he doesn’t try to work harder. →Unless………………………………………………………………………

. Choose the word that is stressed differently from that of the other words.1. A. coffee B. Chinese C. Vietnamese D. Japanese2. A. reindeer B. volunteer C. engineer D. mountaineer3. A. koala B. official C. popular D. together4. A. historic B. attraction C. spectacle D. iconic5. A. aquatic B. artistic C. pollutant D. poisonousII. Match the sentences, clauses or phrases in column A with the ones in column B tomake meaningful sentences6. air pollutionA. a result of using radioactive elementsfrom atomic energy stations.7. land pollutionB. a consequence of the excess dumping oftoxic waste8. thermal pollutionC. a contamination of both drinking waterfrom rivers, ponds an also sea water withlarge amounts of human and industrialwastes.9. radiation pollutionD. a consequence of the excessive andinappropriate use of artificial light.10. light pollutionE. a consequence of releasing excess heatfrom power plants, industries involved inmetals molding, etc.11. sound pollutionF. a contamination of natural air withdangerous gases.12. water pollutionG. a disturbance of silent environment withharsh loud III. Choose the best answer to fill in the blank.13. Don’t drink that water. It’s ________.A. contaminated B. damaged C. dumped D. cleaned14. By the time we got to the cinema, the film ________.A. start B. had started C. starting D. started15. The team’s success was largely ________ to her efforts.A. since B. due C. because D. lead16. Eating too much sugar can ________ to health problems.A. make B. lead C. cause D. due17. I often drink coffee, but today I ________ tea.A. drank B. am drinking C. drink D. was drinking18. The old tradition of first-footing is still practiced today in ________.A. Scots B. Scottish C. Scotland D. Scotlanders19. The Maori in New Zealand greet each other by ________ their noses.A. punching B. blowing C. touching D. kissing20. There is a red maple leaf on the ________ of Canada.A. banner B. flag C. money D. badge21. If you ________ the president, what would you do to help the environment?A. are B. were C. had been D. will be22. The heavy rain has caused ________ in many parts of the country.A. floods B. drought C. storms D. snow23. Scientist have come up ________ new ways of saving energy.A. for B. along C. to D. with24. Waste water from many factories which is dumped ________ water bodies directly causewater pollution.A. into B. up C. to D. out25. Americans throw ________ twenty-eight and a half million tons of plastic in landfillsevery year.A. down B. about C. out D. awayIV. Give the correct form of the verbs in the brackets to complete the sentenceVnDoc -u miễn phí26. For over 130 years, Akubra hats (make) ______________ its legendary stories inAustralia.27. While I (cross) _____________ the street, I (step)____________ on a banana skin and(fall) _________ heavily.28. If everyone (speak) _____________ the same language, do you think life (be)_____________ better?29. Last night I (read) _____________ when suddenly I (hear) _____________ a shout.30. Canada (share) _____________ the longest land border in the world with the UnitedStates.31. At present, the National Cherry Blossom Festival (occur) _____________ in Washington,D.C. to celebrate spring’s arrival.32. Ireland (win) _____________ the Eurovision Song Contest seven times.33. It (begin) _____________ to rain when I (plant) _____________ some flowers in thegarden.34. When they (walk) ________ down the stairs, they (hear) _____________ a strange noise.35. Annually, the National Eisteddfod festival of Wales (take) _____________ place foreight days at the start of August.36. Lan (practice) _____________ the piano while her sister (read) _____________ comicsat 7 o’clock last night.37. I’d probably buy a laptop if you (be) _____________ the cheaper.V. There is one mistake in each of the following sentences. Find and correct it.38. Her grandmother is complaining so she's always dumping her school things in the floor.39. Water from power stations may cause water in rivers and lakes hotter.40. We've decided to cancel our picnic because of it's forecast to rain tomorrow.41. Radiation may result to childhood cancer.42. He worked in a noisy environment for a long time, because his hearing became worse.43. Researchers haven't found out what has led in the pollution of the river.VI. Give the correct form of the words in the brackets in each of the following sentences.44. Many seabirds were _____________ because of the oil spill. (die)45. Trees can’t grow here because the soil is too _____________. (pollute

viết đoạn văn nói cảm nghĩ của bạn về bài cây tre việt nam, bức thư của thủ lĩnh da đỏ, cầu long biên

Cho tam giác ABC với BC=8cm, góc BAC là góc tù: a. Nêu cách xác định điểm M trên cạnh BC sao cho 2/3 BM=4/9 CM b. Lấy các điểm D và E trên cạnh BC sao cho góc BAD, CAE là góc vuông. So sánh góc BAE và CAD

1."How Long.... Here? " Asked Jane A. You have been B . You had been C. Had you been D. Have you been 2."I..... Late again" She Promised A. I Am not B. I won't be C. I wouldn't D. I was not Mn júp mk vs ạ Thank mn ạ <3

A large amount of wet earth that suddenly falls down a hill dap an vs mn oi

viết 1 đoạn văn khoảng 8 câu theo cách diễn dịch, trình bày cảm nhận của em về nhân vật cô bé bán diêm, trong đó có sd dấu ngoặc đơn và câu ghép. chú thích

Bài 1: Tính nhanh (nếu có thể) 14 ×(19-17)-19 ×(29-28) Bài 2: xy-2y+3x-6=