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Cho các axit sau : Co2, PO,K2O,CO. Trong các oxit đó ,oxit nào là : a) oxit axit ? Viết công thức axit tương ứng b)oxit bazơ? Viết công thức bazơ tương ứng Giúp mk với nha mk sẽ cho 5 sao ạ
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PART ONE: PHONETICS I. Choose the word whose underlined part is pronounced differently f-rom the rest in each group. (0.2 x5 = 1.0pt) 1. A. chair B. school C. couch D. children 2. A. game B. change C. vegetable D. geography 3. A. intersection B. eraser C. bookstore D. history 4. A. tenth B. tooth C. brother D. theater 5. A. boot B. tooth C. food D. flood II. Choose the word that has the stress pattern different f-rom that of the other words. (0.2 x5 = 1.0pt ) 1 A.computer B. museum C.visitor D.important 2 A.orange B.banana C.tomato D. champage 3 A.twenty B.sixteen C.sixty D. thirty 4 A. study B. reply C. apply D. rely 5 A.copy B.garden C.photo D.ahead PART THREE: VOCABULARY AND GRAMMAR: (0.2 x 30 = 6.0pts) I. Choose the best answer to complete the following sentences. (0.2 x 10 = 2.0pts) 1. Those children always help their parents …………….the house work. A. to B. with C. do D. B&C are correct 2. A customer is a person who ……………… things A. buys B. sells C. acts D. plays 3. My sister works ……………than me. A. less hour B. few hours C. more hours D. little hours 4. ………. does Nga go to the movies? Once or twice a week. A. How long B. How often C. How much D. How 5. Lan: Let’s go to the movies this evening. Ba : Yes ……………. A. That’s a good idea B. we are C. Thanks D. I am 6. He hates fish. He _____ eats fish. A. usually B. sometimes C. never D. often 7. How _________ wine can he drink? A. far B. much C. many D. long 8. There is an intersection ahead. We……………………. . A.must not slow down. B. must go fast C.can not go straight D. must slow down 9. There is a ……………………..behind my classroom. A. big flower garden B. flower big garden C. garden big flower D. big garden flower 10. There ............ of stars in the sky. A. is million B. are million C. has millions D. are millions

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