`B= [6 (-1/3)^2 - 3 (-1/3) +1] : (-1/3 -1)`
`B=[6 . 1/9 - (-1) + 1] : (-1/3 - 3/3)`
`B=(2/3 + 1 +1) : (-4/3)`
`B=(2/3 + 2) .(-3/4)`
`B= (2/3 + 6/3).(-3/4)`
`B= 8/3 . (-3/4)`
`B= -2`
Vậy `B= -2`
`B = [6. (-1/3)^2 - 3. (-1/3) + 1] : (-1/3 - 1)`
`= [6. 1/9 + 1 + 1] : (-4/3)`
`= [2/3 + 1 + 1] : (-4/3)`
`= 8/3 : (-4/3)`
`= -2`
KHÔNG CẦN GIẢI CHI TIẾT ĐÂU Ạ. CHỈ CẦN ĐÁP ÁN THÔI Ạ. TKSS
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when he is at school.He always wear..............uniform A.the B.an C.a 2.look! the plane is flying to noi bai aiport.It.............. A.will land B.is going landing C.intend tolend 3.Her father................... A.bought for her a cap B bought a cap to her C.buy her a cap 4you............last saturday A.have flu B had flu C.got flu 5you/watch/football match/TV/yesterday/night? ADid you watch a football match on TV yesterday last night? B.Do you watch a football match on TV yesterday night? C.Did you watch a football match on TV yesterday last night? Did you watch a football match on TV ai night yesterday? 9.How much does it...........to mail a local letter a.take b.pay C.cost D.price we have fun............together on the farm every year Aworking B.to work C.to working D.all are incorrect 11He is reading comics with great........ A.please B pleasant c pleasure d.pleased 12.mr.john........the gardening when he was sicteen A.made B.did C.took D.worked 13will you please .....home A.give me a pen B.give me a ride C.take me a ride D.B+D 14.is she very........ with wearing skirts? A.popular B.busy C.famous d. used 15.l'll phone her......l get home A.if B as soon as c.as D.while
V.Circle the letter A, B, C, or D to indicate the most suitable response to complete each of the following exchanges. 15. A: “Congratulations to you on winning the first prize”. B: “_________.” A. You’re welcome B. Thanks a lot C. It doesn’t matter D. It’s my pleasure 16. A: “Will you come to the Aerobics club with me on Sunday?” B: “________.” A. No, thanks B. With pleasure C. Great idea D. Never mind VI.Read the following passage and circle the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks. Physical activity is the (17)_______ obvious benefit of sports participation. Children often spend too much time watching television or (18)_______ video games. But sports practices and games provide an opportunity for exercise that can help keep kids in shape and (19)_______. Sports participation can help children develop social skills that will benefit them for their entire lives. They learn to interact not only with other children their age, but also with older individuals in their coaches and sports officials. Kids learn leadership skills, team-building skills and communication skills that will help (20)_______ in school, their future career and personal relationships. 17. A. more B. much C. most D. many 18. A. doing B. playing C. paying D. watching 19. A. healthy B. wealthy C. happy D. funny 20. A. them B. they C. it D. him
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Vẽ anime đg giận dữ NL : Có ai chs cùng tui hok ?
II- Give the correct form of the verbs ( simple future or future continuous) 1. The tourists ( go) sight-seeing in the country all next week 2. You soon ( tell) what to do next 3. They ( be) here again exactly 7 pm tomorrow 4. The boy ( teach) how to swim when he grows up 5. You ( give) a prize if you come first in the examination 6. We still ( sail) through the Red Sea when you arrive at Cairo 7. Where you ( stay) this time next year? 8. Your shoes ( be) ready in fifteen minutes 9. He ( sleep) when you come this afternoon 10. It still ( rain) when we leave 11. they ( attend a meeting between 2 P.m and 4 pm today 12. This rule soon ( put) into effect 13. you ( come) to tea with us this afternoon? 14. The travelers ( cross) the desert this time tomorrow 15. He ( go ) to bed at 10 o’clock tonight
BÀI 4. Choose the best answer to fill in the blank. 1.If she ________ hard, she will pass the exam. A. work B. will work C. works 2.If it rains, we ________ the match. A. cancelled B. will cancel C. would cancel 3.If she ________late, we ________ without her. A. is - will go B. will be – go C. will be - will go 4.If you ________, I ________ the police. A. don't go - will callB. won't go - call C. won't go - will call 5.Nobody ________ if you ________ a mistake. A. notices - will makeB. will notice - makes C. will notice - make 6.What ________ if you miss the plane? A. are you doingB. will you do C. would you do 7.You ________ the bus if you ________. A. will miss - don't hurryB. won't miss - don't hurry C. miss - won't hurry 8.If I ________ hungry, I ________ something to eat. A. was - will getB. am - will get C. will be – get BÀI 5: Choose the best answer to fill in the blank. 1.If I were you, I ________ him. A. will marry B. marries C. would marry D. married 2.Would you buy this house if you ________ a million dollars? A. have B. had C. will have D. would have 3.I ________ the match if I ________ enough time, but now I'm very busy. A. will watch / have B. watch / will have C. would watch / hadD. watched / would have 4.If he ________, he ________ in the competition. A. sang / would took part B. could sing / would take part C. would sing / took part D. would sing / could take part 5.If I get there, I ________ you. A. would call B. called C. will call D. call 6.If I ________ on a lonely island, I would be very scared. A. lived B. would live C. live D. will live 7. If I ________ a millionaire, I ________ the poor but now I don't have a lot of money. A. am / will help B. will be / help C. were / would help D. would be / helped 8.You ________ the game if you ________ the rules. A. don't win / know B. win / don't know C. can't win / don't know D. will win / don't know
Bồn gương phẳng g1,g2,g3,g4 quay mặt sáng vào nhau lm 4 mặt bên có hình hộp chữ nhật .chính giữa gương g1 là điểm sáng A a)vẽ đường đi của mặt sáng (trên mặt giấy vẽ )đi từ điểm sáng sau khi phản xạ lần lượt lên các gương g2,g3,g4 rồi lại trở về a b)tính đường đi của tia sáng trong trường hợp nói trên .quãng đường có phụ thuộc vào vị trí A hay ko
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