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Hanni1911
2 năm trước
Một miếng bìa màu hình chữ nhật có chiều dài 3,5dm ,chiều rộng 2,8dm A,tính diện tích mảnh biag đó B,bạn mai cắt 25%diện tích bìa đó dùng để trang trí trong giờ học mỹ thuật .hỏi diện tích mảnh bìa màu dùng là bao nhiêu cm2 Giúp mik với mn ơi😭
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Các câu hỏi liên quan

I. Circle the letter A,B, C, or D to indicate the word whose underlined part pronounced differently from that of the rest in each of the following questions. Câu 1. A. campfire B. natural C. animal D. part Câu 2. A. kites B. buzzes C. catches D. oranges Câu 3. A. helped B. noticed C. turned D. looked II. Circle the letter A,B, C, or D to indicate the word that differs from the other three in the position of the primary stress in each of the following questions. Câu 4. A. erosion B. destruction C. butterfly D. abandon Câu 5. A. fauna B. damage C. orphan D. explore III. Mark the letter A, B, C or D on your answer sheet to choose the word or phrase OPPOSITE in meaning to the underlined part in each of the following sentences. Câu 6. The floor was covered with tiny pieces of paper. A. many B. unimportant C. extremely small D. very large Câu 7. We had an accidental meeting with an old friend at the party last night. A. expected B. unlucky C. unpleasant D. unacceptable IV. Circle the letter A,B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word(s)in each of the following questions. Câu 8. Many scientists agree that global warming poses great threats to all species on Earth. A. annoyance B. fears C. irritations D. risks Câu 9. The rains of 1993 causing the Missouri river to overflow resulted in one of the worst floods of the 20th century. A. caused B. lessened C. stopped D. overcame V. There are incomplete sentences. Circle A, B, C or D as your best choice to complete each sentence from questions. Câu 10. The film is .........................., so I enjoyed it so much. A. interest B. interesting C. interested D. to interest Câu 11. Lan: Do you want me to take you to the airport? Nam: No, thanks. Nga ……………..me. A. is taking B. will take C. was going to take D. takes Câu 12. "_________ take the train instead of the bus? It's faster." A. Let's B. How about C. Why not D. Why don't Câu 13. Alice : " What shall we do this everning?" - Carol: ".........................." A. Thank you B. Let's go out for dinner C. No problem D. Not at all Câu 14. Many people come to the national parks to see the work being done to protect endangered species. A. plants or animals that may be dangerous to people B. plants or animals that may soon become extinct C. plants or animals that disappeared from the world D. plants or animals that are about to die Câu 15. A letter to America is 9500 dong. A. What is a price of a letter to America? B. How many is a letter to America? C. What is the price of a letter to America? D. How much do a letter to America cost? Câu 16. Today, many serious childhood diseases ..................... by early immunization. A. can be prevent B. are preventing C. can be prevented D. be prevented Câu 17. 'Ms. Jones, have you typed the letters yet?'. 'They ................ yesterday, Sir. They're on your desk.' A. been typed B. typed C. being typed D. were typed Câu 18. A: "Would you like to have lunch with us?" ~ B: .......................... A. Yes, I'd love to B. Not at all C. You are welcome D. Thank you Câu 19. She ............her holiday in Finland. A. told me about B. said me about C. said about D. told to me about Câu 20. 'Look outside. ........... sky is getting very dark.' `I hope there isn't going to be a storm.' A. A B. The C. θ D. Some Câu 21. A: "Hey Keyman, where are you going?" __ B: -..................... A. I went to a friend. B. I'm going to see a friend at club. C. I'll see a friend. D. I go to see a friend. Câu 22. Although insects are harmful to plants, their existence contributes a great part to ............which helps to make balanced environment. A. biophysics B. biodiversity C. biology D. biosphere Câu 23. If I had had breakfast, I ................ hungry now. A. would be B. am not being C. wouldn't be D. wouldn't have been Câu 24. Music makes a funeral more solemn and ……………….. A. lyrical B. mournful C. interesting D. exciting Câu 25. I was enjoying my book. but I stopped ........... a program on TV. A. to read for watching B. reading to watch C. to read to watch D. reading for watching Câu 26. Cuc Phuong National Park....................... over 200 square kilometers of rainforest. A. covers B. contains C. holds D. gets Câu 27. She was.....................the traffic in the city. She had never seen so many cars before. A. amazed at B. astonished of C. surprised of D. surprised for Câu 28. .....……… is traditional music from a particular country, region, or community. A. Blues B. Jazz C. Classical music D. Folk music Câu 29. "It is raining heavily". " You................. raincoat." A. don't wear B. would wear C. should wear D. should not wear

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