Dãy chất nào sau đây gồm các chất đều có thể làm nhạt màu nước brom ? A:C6 H6 , C2 H2 . B:C2 H4 , C2 H2 . C:CH4 , C6 H6 D:CH4 , C2 H2 .

cho tam giac abc vuong tai a(ac>ab), duong cao ah. 1)cm tam giac hba dong dang voi tam giac abc .2)duong phan giac be cua goc abc (e thuoc ac) cat ah tai f . cm a)tam giac aef la tam giac can . b)fh/fa=ea/ec

Câu 1. Mục tiêu chung của Hiệp hội các nước Đông Nam Á: A. Hợp tác về giáo dục, đào tạo. B. Giữ vững hoà bình, an ninh, ổn định khu vực. C. Cùng sử dụng lao động. D. Cùng khai thác tài nguyên. Câu 2. Gió tây khô nóng gây ra hạn hán ở vùng: A. Miền Trung. B. Tây Bắc. C. Miền Trung và Tây Bắc D. Bắc Trung Bộ. Câu 3. Hồ Dầu Tiếng nằm trên sông: A. Sông La Ngà. B. Sông Sài Gòn. C. Sông Đồng Nai. D. Sông Ba.

Giúp em giải câu này ạ, em không biết làm

Reorder the words to make sentences. 1. children/ cookies/ milk. / and/ like/ most .............................................................................................................. 2. like/ I/ don’t/ coffee/ I/ like tea./ , but .............................................................................................................. 3. Ha Noi/ homeless/ give/ in/ clothes/ away/ they/ warm/ to/ people. .............................................................................................................. 4. vacation/ since/ we/ haven’t/ last/ had/ a/ year. .............................................................................................................. 5. printer/ under/ this/ guarantee/ is. .............................................................................................................. 6. our/ a/ in/ makes/ volunteering/ difference/ community. .............................................................................................................. 7. you/ have/ finished/ homework/ your/ yet? .............................................................................................................. 8. get/ it’s/ easy/ flu/ to/. ..............................................................................................................

Hợp chất hữu cơ X có công thức CnH2n+1OH. Cho 12 gam X tác dụng hết với Na lấy dư, thu được 2,24 lít (đktc) khí H2. Công thức hóa học của X là

Make sentences from the words/ phrases given. 1. We/ keep/ our bodies/ warm/ avoid/ flu/ a cold. .............................................................................................................. 2. You/ not/ play/ more/ computer games/ free time. .............................................................................................................. 3. Vitamins/ play/ important/ role/ our diet. .............................................................................................................. 4. Getting/ enough/ rest/ help/ you/ concentrate/ school. .............................................................................................................. 5. Doctor/ asking/ Huy / questions/ about/ health problems. .............................................................................................................. 6. That dog/ not/ as dangerous/ it looks. .............................................................................................................. 7. Schools in Viet Nam / different/ schools/ the USA.

MULTIPLE CHOICE (8pts) Mark the letter to indicate the word whose underlined part differs from the others. 1. A. watches B. goes C. boxes D. misses 2. A. snack B. facility C. activity D. habit Mark the letter to indicate the word whose underlined part differs from the others in the position of primary stress. 3. A. committee B. astounding C. picturesque D. contestant 4. A. ancient B. treasure C. historical D. structure Mark the letter to indicate the word whose underlined part that needs correction. 5. Ha Long Bay is one of the most beautiful natural wonder in the world. A B C D 6. My mother said that she would go to Britain following month. A B C D 7. When he arrived, I talked on the phone with my best friend. A B C D Mark the letter to indicate the correct answer. 8. I think I prefer city life…………...country life. A. to B. than C. of D. more than 9. Can you tell me what you…………...at 8 last night? A. have done B. were doing C. did D. have been doing 10. …………...she felt tired, she had to finish her assignments. A. Despite B. In spite C. Because D. Even if 11. You …………....better if you had taken this medicine. A. will feel B. would feel C. felt D. would have felt 12. My family had a…………..tour to the USA. A. two-days B. two-day C. day-two D. Second day 13. The boy………….. Eyes are brown is my cousin. A. whose B. who C. whom D. that 14. The local government suggests…………..a road through the Nam Cat Tien National Park. A. build B. to build C. building D. being built 15. In 1990, due to the change of the economic situation, many Dong Ho cooperatives had to…………... A. close B. close in C. close down D. shut 16. There is no point. …………..to get higher mark if you don’t study harder. A. try B. to try C. trying D. in trying Mark the letter to indicate the most suitable response. 17. – How lovely your cats are! - ………….. A. Really? They are. B. Thank you, it is nice of you to say so. C. Can you say it again. D. I love them, too. 18. - Is it right if I use your computer, mom? - ………….. A. I don’t care B. I accept it. C. Sure, go ahead D. Oh, forget it Mark the letter to indicate the word(s) CLOSET in meaning to the underlined word(s). 19. Water and fresh air are very necessary for every living thing. A. essential B. difficult C. expensive

Ai bt thì giải giùm em nha, em đang bí : Hình bình hành MNPQ có diện tích 45cm2, cạnh NP = 6cm, chiều cao bằng 5cm. Hãy tìm chu vi của hình bình hành MNPQ ?

VOLUNTEER OPPORTUNITIES Lion’s Heart is a national non- profit community service organization for teenagers who wish to volunteer, become leaders, and earn awards. Although our management team is located in Orange County, California, Lion's Heart can start a volunteer group ANYWHERE in the USA. Benefits of Membership with Lion's Heart: • Login all of your community service in one place; print and share your log • Leadership training and experience • Experience working with a team of your peers • Lion's Heart logo tee shirt and member folder are included with first year membership dues • Earn awards for encouragement, pride and your resume! Awards provided are: • National President's Volunteer Service Awards • Lion's Heart Torchbearer Awards • Lion's Heart Golden Lion Awards Read the information about “Volunteer Opportunities”. Answer the questions 1. What are the names of community service organisations? 2. What do you think the phrase “make a difference” means? 3. Is Lion’s Heart a profit organisation?