Đáp án + Giải thích các bước giải:
`3/4 . 26 1/5 - 3/4 . 44 1/5`
`= 3/4 . (26 1/5 - 44 1/5)` (26 - 44 = -18 ; 1/5 - 1/5 = 0 → = -18)
`= 3/4 . (-18)`
`= -27/2` (cái này = -27/2 mới đúng vì dương x âm = âm)
b) `3/(4).26(1)/(5)-3/(4).44(1)/(5)`
`=3/(4).(26(1)/(5)-44(1)/(5))`
`=3/(4).(-18)`
`=(3.(-18))/(4)`
`=-(27)/2`
Mark the letter A, B, C, or D on your answer sheet to indicate whose underlined part differs from the other three in pronunciation to each of the following questions 1. A. table B. dad C. tale D. lake 2. A. when B. who C. where D. what 3. A. enjoyed B. walked C. watched D. practiced Mark the letter A, B, C, or D on your answer sheet to indicate the word that differ from the other three of position of primary stress in each of the following questions. 4. A. confide B. gather C. divide D. reply 5. A. occasion B. cinema C. emphasis D. calendar Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. 6. Jean cloth _________from cotton in the 18th century. A. made B. is made C. has made D. was made 7. I am not in a hurry. I don't mind ______. A. waiting B. wait C. to wait D. waited 8. I wish Ann ______ here. She will be able to help us. A. were B. had been C. is D. will be 9. Mrs. Brown forgot her raincoat ______ she got wet. A. so B. but C. because D. if 10. They haven’t finished the project, ________? A. haven’t they B. have they C. do they D. don’t they 11. I’ve looked _______ my book everywhere but I can’t find it. A. for B. after C. at D. in 12. He asked me ________. A. where did I live B. where I lived C. where do I live D. where I live 13. Peter is short. He's not ______ to be a policeman. A. so tall B. too tall C. quite tall D. tall enough 14. The ______ of living in cities is higher than that in the countryside. A. standard B. level C. price D. life 15. The laptop ______ my father has just bought helps him work efficiently. A. who B. which C. whose D. where 16. If he ______ up smoking, he will be well again soon. A. gave B. had given C. gives D. will give 17. Nam is a student. He always goes to ______ school at 6. 30 in the morning. A. a B. an C. the D. ∅ 18. People go to a______ to look at famous works of art. A. fair B. theater C. stadium D. gallery 19. My friend has lost weight and is much ______ than last year. A. thin B. the thinnest C. as thin D. thinner 20. There are many tourists ______in Ninh Binh province. A. attract B. attractive C. attractively D. attractions 21. Sam: ______ is this toy car? Shop assistance: It’s fifty thousand dong. A. How many B. How far C. How often D. How much 22. She did all the housework ______ because her mother was sick. A. with herself B. on her own C. in mind D. by heart 23. It’s really dangerous. She is always forgetting to ______ the gas stove. A. go on B. turn off C. put on D. get over 24. Many people still refuse to admit that smoking _________ harm to people’s health. A. makes B. does C. creates D. experiences Help me T^T đang cần gấp ạ
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