cho ví dụ về ngành nghề trong nông lâm ngư nghiệp

Mọi người giải giúp mình giải câu a, c, f nhanh nha! Mình sẽ vote 5 sao!

So sánh số hữu tỉ a/b (a,b ∈ Z , b khác 0 ) với số 0 khi a,b cùng dấu và khi a,b khác dấu

6 mũ 3 phần 8 x 9 mũ 5 phần 27 mũ 4

giúp với nhé cho câu trả lời hay nhất luôn

EXERCISES: Choose the best answers. 1. The dancing club ________ north of the city. A. lays B. lies C. located D. lay 2. John ________ tennis once or twice a week. A. usually play B. is usually playing C. usually plays D. have usually played 3. The earth _________ round the sun. A. go B. has gone C. went D. goes 4. The sun _________ in the East. A. is rising B. rose C. has risen D. rises 5. Bad driving often __________ many accidents. A. caused B. had caused C. causes D. has cause 6. The Olympic Games _________ every four years. A. take place B. takes place C. took place D. is taking place 7. Water ______ at 100 degrees Celsius. A. boiling B. boils C. is boiling D. boil 8. Bettina seldom ______ television in the evening. A. watches B. watching C. watch D. has watched 9. Today she _________ although her father drives her every day. A. is riding a bike B. rides a bike C. ride a bike D. are riding a bike 10. Listen! Sam _______ the piano. A. are playing B. am playing C. plays D. is playing 11. Look! Somebody _________ in the river. A. is swiming B. are swimming C. am swiming D. is swimming 12. ____ his brother ________a novel at the moment? A. are/ writing B. are written C. writes D. is/ writing 13. John _____________ that car now A. am driving B. is driving C. are driving D. drives 14. He __________ motorbikes for 2 years A. has been riding B. has ridden C. has been ridden D. have been riding 15. My sister ________ for you since yesterday. A. has been looked B. has been looking C. have been looking D. looked 16. Why are your hands so dirty? – I __________ my bike A. repaired B. have been repaired C. has been repaired D. have been repairing 17. We _________ around Scotland for 8 years A. travelled B. have travelled C. have been travelling D. has been travelling 18. I ________ to learn English for years but I have not succeeded yet. A. have been trying B. have tried C. tried D. A & B 19. I _________to New York three times this year. A. have been being B. have been C. was D. has been 20. I love this film. I _________ it four or five times already. A. have been seeing B. have seen C. has seen D. had seen 21. If our teacher _____ here, we wouldn’t know what to do. A. is B. were C. isn’t D. weren’t 22. When Lan was younger, her aunt __________ her to see Cham Temple. A. taken B. took C. take D. takes 23. She _______ a new ruler two days ago. A. didn’t buy B. doesn’t buy C. will buy D. is buying 24. _____ they _______ school yesterday? A. didn’t - came B. didn’t -come C. doesn’t - come D. won’t -come 25. What _____ they ________ last week? A. do - play B. did - play C. do - played D. did – played 26. I’m sure we ________ your bag soon. Where did you last see it? A. will find B. will play C. had found D. founded 27. One day, people ________ on Marz in special buildings A. live B. is living C. will live D. lived 28. If it is sunny next week, we _________ the vegetables. A. would plant B. will plant C. planted D. had planted 29. This year, more than a million tourists _________ our local area. A. visit B. will visit C. don’t visit D. visited 30. Everything on the menus looks delicious! Erm … I ________ Chicken Kiev, please. A. had B. is having C. will have D. have Hơi dài mn giúp dùm em

A/c hãy viết một đoạn văn 200 chữ bàn về vấn đề tình người trong đợt dịch covid vừa qua

0,5x4 phần 3-5 phần 6 : 5 phần ba

cho hai tập hợp : A = {1;4;6;7;8;9;10;a;b} B= {a,c,e,x,y,z} Điền kí hiệu thích hợp vào chỗ trống : 3....A. b....A. 10.....B. x€...

Nhiệt phân hoàn toàn x gam KClO3 (có MnO2 xúc tác), khí thoát ra được thu qua chậu đựng dung dịch H2SO4 loãng (D = 1,15 g/mL) vào ống nghiệm úp ngược (như hình vẽ). Các dữ kiện thí nghiệm: Nhiệt độ 17oC; áp suất khí quyển 752 mm Hg; thể tích khí thu được trong ống nghiệm V = 238 cm3; khoảng cách giữa 2 mặt thoáng h = 27 cm; khối lượng riêng của Hg là 13,6 g/cm3; áp suất hơi nước trong ống nghiệm là 13,068 mm Hg. Tính x.