“is the first recorded earthquake in history. It occurred at Mount Tai during the 7th year of the reign of King Fa from the Xia dynasty between circa 2205 and 1600 BCE” là gì? (Ko tra bằng Google Dịch nha)

Giúp mk với mn.........................

Vẽ sơ đồ tóm tắt kiến thức về từ loại đã học, cho mỗi loại 1 ví dụ ( lớp 6 mọi người nhé)

1. Cho `a,d\ge 0; b,c>0`. Tính GTNN `P=b/(c+d)+c/(a+b)` 2. Cho `a,b,c\in [1; 2]`. Tính GTLN `P=(a+b+c)(1/a+1/b+1/c)`

1. They ................... students yesterday. a. am b. is c. was d. Were 2. They ............. doctors two years ago. A. am b. is c. was d. Were 3. They ............... farmers last month. A. are b. is c. was d. Were 4. We ....... nurses yesterday. A.are b. is c. was d. Were 5. The weather ........ cold yesterday. A.aren’t b. isn’t c. wasn’t d. weren’t 6. I .........a pupipl last week. A.aren’t b. isn’t c. wasn’t d. weren’t 7. These hats .......new yesterday. A.aren’t b. isn’t c. wasn’t d. weren’t 8. My parents........teacchers two years ago. A.are b. is c. was d. Were 9. He .............a mechanic last Monday. A.aren’t b. is c. wasn’t d. weren’t 10. ... he an engineer yesterday. No, he ...... A.is/ is n’t b.are/aren’t c.was/wasn’t d.were/weren’t 11. .......It hot last week? A. am b. is c. was d. Were 12. The shops ...open last Monday. A. am b. is c. was d. Were 13. .... you a teacher two years ago? Yes ,I....... a.is/ is n’t b.are/aren’t c.were/wasn’t d.was/weren’t 14. Where ......Nam from yesterday? A. am b. is c. was d. Were 15. Why .........they unhappy last Tuesday? A. am b. is c. was d. Were 16. I ... your trip to Nha Trang two years ago. A.remember b.remembers c.remembered d.rememberred 17. Ba ........ the cap all day yesterday. A. wear b. wears c. weared d. wore 18. We ..........a lot of fish yesterday. A. eated b. ate c. eats d. Eat 19. Her aunt ......... her to see Cham Temple last year. A .taked b. took c. take d. Takes 20. Tuan ......... a new bike yesterday. A. haved b. has c. had d. Have 21. She............... a new ruler yesterday. A.didn’t buy b.doesn’t bought c.did buy d.didn’t bought 22. He ........................ with his parents about his vacation in Da Lat last year. a. don’t talk b. doesn’t talked c. didn’t talked d. Talked 23. They........... school yesterday a. didn’t comed b. didn’t come c. doesn’t comed d. doesn’t come 24. The windows ........... yesterday a. didn’t close b. didn’t closed c. doesn’t closed d. doesn’t close 25. We ………..at home at 7 p.m last Monday. a. didn’t return b. didn’t returned c.doesn’t return d. doesn’t returned

Trong đợt đăng kí tham gia các câu lạc bộ (CLB) ở trường Nguyễn Tất Thành, mỗi học sinh được đăng kí tham gia từ 1 đến 2 CLB. Có tổng số 30 học sinh lớp 6 đăng kí vào CLB Phóng viên và CLB Khoa học, trong đó có 15 học sinh đăng kí CLB Phóng viên, 20 học sinh đăng kí CLB Khoa học. Hỏi có ít nhất bao nhiêu học sinh lớp 6 đăng kí tham gia cả hai CLB?

Giúp mình mấy bài này voi :3 iuu các bạn

Có 4 lọ mất nhãn chứa riêng biệt các chất: HCl, H2SO4, NaCl, Ba(OH)2. Theo mấy bạn nếu dùng quỳ tím thì có thể nhận biết được bao nhiêu chất?

vẽ nhx thứ về cô đơn + tuyệt vọng =>mong có ng tấm sự

31*45+69*50+31*15+60*10 cách tính nhanh