Tính giá trị biểu thức 0,1+0,2+0,3+.....+1,9( số có tất cả 19 số hạng)

IV. Choose the correct answer; A, B, C or D. 1. We to the countryside two months ago. A. go B. have gone C. went D. will go 2. What will you do if you the final examinations? A. will pass B. would pass C. pass D. passed 3. I wish my summer holiday longer. A. will be B. is C. were D. has been 4. I asked him he came from. A. where B. who C. what D. which 5. It rained hard. , my father went to work. A. Therefore B. However C. Because D. So 6. Your sister writes poems and stories, she? A. does B. doesn‟t C. will D. won‟t 7. Laura fell asleep during the lesson she was tired. A. so B. but C. because D. therefore 8. How much do you want? A. bananas B. eggs C. candies D. sugar 9. Do you know the man you met at the party yesterday? A. what B. which C. whom D. whose 10. Tomorrow the director will have a meeting 8:00 am to 10:00 am. A. between B. from C. among D. in 11. The doctor advised me jogging every morning. A. went B. go C. to go D. going 12. The bike I have just bought is every cheap. A. which B. where C. what D. who 13. We will start our trip 6 o‟clock the morning. A. in / in B. at / in C. in / at D. at / at 14. He said he come back later. A. will be B. will C. would be D. would 15. We anything from James since we left school. A. haven‟t heard B. heard C. don‟t hear D. didn‟t hear 16. If I a bird, I would be a dove. A. would be B. were C. am D. will be 17. The children sang during the trip. A. happily B. happiness C. unhappy D. happy 18. This newspaper everyday. A. is publishing B. publish C. published D. is published 19. You have lived in this city since 1998, ? A. haven‟t you B. didn‟t you C. did you D. have you 20. My students enjoy English very much. A. learn B. learnt C. learning D. to learn ai trl trc cho ctlhn nha !

Giải pt: sin^2(x)+sin^2(2x)+sin^2(3x)=3/2

Choose the underlined word or phrase (A, B, C or D) that needs correcting. 42. Life in the city is more stress than life in the country. A B C D 43. A new factory will be build in my neighbourhood. A B C D 44. Your uncle worked in Ha Noi for one year then moved to Da Nang, doesn’t he? A B C D 45. He will clean his house at 9 am tomorrow. A B C D

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Trình bày đúng và rõ giúp em ạ :>

Bài 2:Tính A= [(- 8 ) + ( - 7 ) ] + ( -10) B = - ( - 299 ) + ( - 219 ) + ( -401 ) + 12 B = - ( - 299 ) + ( - 219 ) + ( -401 ) + 12 C = 555 + ( - 100) + ( -80) + 333 D = 347+ ( - 40 ) + 3150 + ( - 307) E= 98 . 42 – {50 . [(18 – 2^3) : 2 + 3^2]} F = - 80 - [ - 130 – ( 12 – 4 )^2] + 2021^0 H = 1024 : 2^4+ 140 : ( 38 + 2^5)- 7^23 : 7^21 I =129-119 + 2-31 N = 160 – ( 2^3.5^2– 6 . 25 ) Q = 100 + 98 + 96 + .... + 4 +2 – 97 – 95 - ….- 3 – 1 helppppppppp me:(

10. A. girls B. sisters C. parks D. trees 11. A. lessons B. faces C. drivers D. trains 12. A. nights B. mothers C. examples D. apples 13. A. legs B. letters C. keys D. bats 14. A. watches B. houses C. works D. buses 15. A. parents B. brothers C. weekends D. bananas 16. A. birds B. plays C. finds D. fishes 17. A. hats B. dolls C. boats D. cats

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Đề bài: Điền các đơn thức thích hợp zào chỗ trống: a) (x-1/2)^2= x^2 - ..........+1/x^2 b) (1/2 x+ ......... ) (1/4 x^2 - ....... +1/9 y^2)= 1/8 x^3+ 1/27 y^3