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2 năm trước
Cặp chất nào sau đây được dùng để điều chế oxi trong phòng thí nghiệm? A. KMnO4, KClO3 B. H2O, KClO3 C. K2MnO4, KClO D. KMnO4, H2O Dãy các chất nào sau đây đều là oxit? A. CaCO3,CaO,NO B. ZnO,CO2,SO3 C. HCl,BaO, P2O5 D. Fe2O3, NO2, HNO3
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làm hộ với ạ Have you ever wondered what the weather is like in other places around the world? Today, I’d like to talk about the changing seasons in my city. The winter season usually begins in December and ends in early March. The coldest month is January, and temperatures can drop below freezing for most of this month. The city usually averages about 30 inches of snow during this 3-month period. Occasionally, we have snow storms that can drop a foot of snow in a very short period of time. Spring usually arrives in late March, it’s a beautiful season because the flowers start to bloom. It is sometimes windy, and this is great for flying kites. People in my city often like to go on picnics, stroll though parks, and play outdoor games. Summer starts in June and it’s very dry with little rain throughout the season. Fortunately, the weather is very dry with low humidity, so it is real pleasant even on hot days. And finally, summer changes to fall in late September when the weather cools off, and the trees begin to change colors. A lot of people enjoy driving into the mountains and viewing the fall colors. Question 26-29. Choose the best option for each statement 26. The passage is about………………… A.the changing seasons B. summer C. winter D. flowers 27. Which month is the coldest one in the winter? A. February B. March C. December D. January 28. The winter season usually begins in ………………… A. December B. March C. November D. January 29. Spring is a great season for …… A. cycling B. jogging C. flying kites D. games

11. Super cars will water in the future. A. go by B. run at C. run on D. travel by 12. The robot will of the flowers in the garden. A. take care B. take note C. be careful D. carry 13. The house will have a super mart TV to the e-mails. A. send and post B. send and receive C. get and take D. receive and get 14. pencils and rapper, every student will have a computer. A. By B. Instead C. Instead of D. At 15. We might have a TV to watch TV programmes from space. A. wireless B. remote C. automatic D. local 16. My brother wants to become a to tell TV viewers what the weather is like. A. newspaper B. actor C. weatherman D. producer 17. TV can join in some game shows through telephone or by mail. A. people B. weatherman C. newsreaders D. viewers 18. are films by pictures, not real people and often for children. A. Documentaries B. Love stories C. Cartoons D. Detective stories 19. Are there any good programs teenagers on TV tonight? A. to B. for C. of D. with 20. My father works late tomorrow, so he will the first part of the film on VTV1. A. miss B. lose C. forget D. cut

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