1. nêu cách sử dụng năng lượng đảm bảo an toàn

2. 1. 1 người đẩy 1 xe bánh hơi đang chạy trên đg a.kể tên 4 loại lực tác dụng lên xe b.giả sử hạt đó nặng 200kg = bao nhiêu N

1. She ‘s beautiful with a ............................. smile. ( Love )
2. .........................., the barber cut my hair too short. ( luck )
3. Each of my friends has a ............................ character. ( differ )
4. Nam is very ............................., kind and generous. ( Social )
5. My uncle often spends his free time doing volunteer work at a local .......... ( orphan ).
6. She has short .......................... hair. ( curl ).
7. Trung and his brother like .............................. movies very much. ( act )
8. My brother likes acting and outdoor ..................................... ( act ).
9. Bell experimented with ways of transmitting............... over a long distance. ( speak )
10. Bell ...................... demonstrated his invention. ( success ).
11. Mr Phong made an ...................... to see us at two o’clock. ( arrange )
12. Thomas Watson was Bell’s ......................, wasn’t he ? ( assist )
13. There wasn’t any ...................... in our village two years ago. ( electric )
14. “ The lost shoe” is one of the ..........................stories I like best. ( tradition )
15. Everyone was ............................. at the soccer match. ( excite ).
16. Marconi was the ......................... of radio. ( invent )
17. The ........................... of radio was made by Marconi. ( invent )
18. Alexander G.B ............................. demonstrates his invention. ( success )
19. Can I leave the ............................. of the table for you ? (arrange )
20. We have two postal ........................ each day. ( deliver )
21. I’m going to the shop for a rice ........................ . ( cook )
22. Be careful to cover the ....... sockets for the safety of the children. ( electric )
23. The music is beautiful. It makes the movie ......................... ( forget )
24. In order to save the ...., remember to turn off the lights before going out. ( electric )
25. The boy fell off his bicycle and ........................... broke his arm. ( fortunate )
26. His broken arm was still ............................. ( pain).
27. A fairy appeared and ............................... changed her old clothes. ( magic )
28. The tiger wanted to see the farmer’s .............................. ( wise ).
29. The police came ................................ . ( immediate )
30. Our life is much better with the help of modern .......................... ( equip )
31. In the story, the prince got ....................... to a poor girl. ( marry ).
32. He is an .......................... student. ( excellence )
33. Thank you for your ............................... party. ( enjoy )
34. Remember to check for ..... mistakes before handing in your writing. ( spell )
35. ......... in sport competitions is open to everyone in our school. ( paticipate )
36. Her parents are pleased with her good ............................. ( behave )
37. His ...................... of some words is not correct. ( pronounce )
38. My teacher is proud of my ........................ in my study. ( improve )
39. I can do all the excercises ........................... ( easy )
40. The Boy Scouts of America is a youth .................................. ( organize )
41. The form must have the ...................... of the writer. ( sign )
42. Our teacher always gives us ........... so that we can work hard. ( encourage)
43. If you want to join the club, please fill in this .................... form. ( apply )
44. Who is the .................. of this car ? ( own )
45. There are not enough doctors in this ..................... ( neighbor)
46. The ......... in the area are against the building of the new high way. ( reside )
47. I want to become a famous ......................... when I grow up. ( photograph )
48. There is a wide ..................... of clothes for you in this summer. ( select )
49. Mai always brings an English dictionary in her ........................... ( pack )
50. The weather is getting ( bad ) ...................

Help me pls 

Câu 1: Cho a= 2³.3, b=3².5, c=2.5. Khi đó ƯCLN_(a,b,c) là:

A.2³.3.5           B.1                 C.2³.3².5²      D.30

Câu 2: Cho số A=5⁴.13².17. Số các ước của A là:

A.3          B.7          C.15       D.30

Câu 3: Số tự nhiên a nhỏ nhất khác 0 thỏa mãn a⋮18 và a ⋮40

A. 360.                            B. 400.                          C. 458.                          D. 500.

nhanh dùm ạ

Câu 1: Cho a= 2³.3, b=3².5, c=2.5. Khi đó ƯCLN_(a,b,c) là:

A.2³.3.5           B.1                 C.2³.3².5²      D.30

Câu 2: Cho số A=5⁴.13².17. Số các ước của A là:

A.3          B.7          C.15       D.30

Câu 3: Số tự nhiên a nhỏ nhất khác 0 thỏa mãn a⋮18 và a ⋮40

A. 360.                            B. 400.                          C. 458.                          D. 500.

(2x - 17)⁵=-243

nhanh nhanh dùm em với em sắp đi học gòi :((

( 3x-1)⁴= (2x + 3)⁴