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Một phân tử ADN có 3000 nuclêôtit Trong đó a chiếm 20% a tính số lượng nuclêôtit từng loại số liên kết hiđrô của phân tử trên
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Exercise 1: Choose the best option to fill in the blank. 1. The Sydney Opera House is considered as the symbol of __________. A. Asia B. America C. Australia D. Europe 2. Vietnam is located in Southeast __________. A. America B. Asia C. Australia D. Europe 3. The smallest __________ in the world is Australia. A. continent B. ocean C. country D. city 4. Some developed nations namely Britain, France and Germany are located in _______. A. America B. Asia C. Australia D. Europe 5. Have you ever seen Big Ben? It is the most visited __________in Britain. A. city B. country C. landmark D. continent 6. Penguins often live in __________because they are especially adapted to the cold weather. A. Asia B. Antarctica C. Australia D. America Exercise 2: Find which word does not belong to each group. 7. A. sunny B. beaches C. kitchen D. supermarket 8. A. big B. tall C. wide D. expensive 9. A. market B. memorial C. park D. suburb 10. A. boring B. exciting C. convenient D. interesting 11. A. cross B. turn C. straight D. buy Exercise 3: Choose the word that is opposite in meaning to the underlined word. (Tìm từ trái nghĩa với từ được gạch chân) 12. Rio de Janeiro is an exciting city. a. interesting b. dangerous c. boring d. expensive 13. The beaches in Sydney are clean and beautiful. a. clear b. dirty c. famous d. fresh 14. It’s dangerous to walk around the city at night. a. safe b. exciting c. cold d. popular 15. The dish is delicious with cheese. a. tasty b. pleasant c. fatty d. awful 16. York is a historic city in North Yorkshire. a. exciting b. modern c. famous d. quiet 17. The streets were very noisy throughout the night. a. crowded b. busy c. quiet d. empty 18. That modern building is so ugly! a. big b. impressive c. unattractive d. beautiful 19. We didn’t go camping last weekend. The weather was awful. a. unpleasant b. nice c. bad d. terrible Exercise 4: Find the word which has a different sound in the part underlined. Read the words aloud. 20. A. yellow B. brow C. throw D. know 21. A. follow B. cow C. town D. how 22. A. find B. singer C. high D. mine 23. A. money B. wonderful C. long D. come 24. A. exhaust B.hold C.house D.height 25. a. prize b. excite c. design d. capital Exercise 5: Complete the sentences with the correct form of superlative adjectives. (viết đáp án ra vở ghi) 1. It was (horrible) ______________ feeling I have ever had. 2. Have you read her (recent) ______________ book? 3. It was (boring) ______________ speech I have ever had. 4. Your idea is (helpful) ______________ one of all. 5. The factory uses (modern) ______________ production methods. 6. Is gold (expensive) ______________ in the world? 7. Chinese is considered to be (difficult) ______________ language to learn. 8. Is this the (interesting) ______________ hobby you have? 9. I have enjoyed (exciting) ______________ speech so far. 10. Being a fire fighter is one of (dangerous) ______________ jobs. Exercise 6:Complete the sentences with the correct form (comparative or superlative) of the words In brackets. Add any necessary words. (viết đáp án ra vở ghi) 1. Sao Paulo is __________________ London. (crowded) 2. Paris is __________________ city in the world. (romantic) 3. New York is much __________________ Sydney. (expensive) 4. The Eiffel Tower is __________________ building in France. (famous) 5. China is one of __________________ countries in the world. (big) 6. In my opinion, Tokyo is __________________ Mumbai. (interesting) 7. Barcelona is __________________ Stockholm. (hot) 8. I think that Istanbul is __________________ city in the world. (beautiful) cho các bạn giỏi TA nhé

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