Vẽ hình dưới nha mn :> lên màu luôn nha, hơi khó nên giống sơ sơ thôi cũng được :P
đặt một vật AB có dạng mũi tên trước một thấu kính phân kì cách thấu kính 12cm vật cao 4cm. thấu kính có tiêu cự 4cm a, vẽ ảnh của vật AB qua thấu kính b, tính khoảng cách từ ảnh tới thấu kính và chiều cao của ảnh
Biển việt nam diện tích,độ muối,nhiệt độ các đảo và quần đảo
I/ Choose one of the four options that best completes the passage below: Among the festivals (1)………… by some of Asian people is the Moon Cake Festival, also known (2)………… the Mid August Festival. Large numbers of small round moon cakes are eaten (3)…………. this day, and children enjoy carrying colorful (4)……………. lanterns come in all shapes; the most popular ones are shaped like fish, rabbits and butterflies. According to (5)…………, the moon shines the brightest on the night of the Moon Cake Festival. As the moon rises, tables are placed (6)……………… the house and women make offerings of fruit and moon cakes to the Moon Goddess. 1. A. celebrated B. made C. held D. set 2.A. like B. as C. such as D. ø 3.A. in B. for C. at D. on 4.A. wood B. metal C. paper D. gold 5.A. they B. them C. it D. their 6.A. under B. near C. outside D. around II/. Choose the words or phrases that are not correct in standard English: 7. Did the house broken when you were away? A B C D 8.That is the girl whom Jim wants to marry her. A B C D 9. Although it rained heavy, they went out last night. A B C D 10. The accident happened in front of my house last night because the driver’s carelessness. A B C D III. Choose the correct word or phrase in each of the following sentences 11. This newspaper is ………every day. It’s a daily newspaper. A. publishing B. published C. publish D. to publish 12. We are taking about the preservation of ………resources. A. natural B. nature C. naturally D. naturalize 13. Everyone must take part in ………forests and increase forestation. A. protect B. protecting C. protection D. protected 14. In order to save electricity, an ordinary 100-watt light bulb can be replaced by ………. . A. an energy-saving bulb B. a 1000-watt light C. an electric bulb D. a saving - energy bulb 15. ………we know her address, we will call you. A. Unless B. Since C. If D. Therefore 16. If you know where she lives, let me…………. A. to know B. knowing C. know D. knew 17. We’ll make the beach clean and ………… again A. polluted B. dirty C. awful D. beautiful 18. It is impossible …………a newspaper without reading about the damage we are doing to the environment. A. open B. opening C. to open D. opened 19. If you are late again, you…………the job. A. won’t lost B. will lose C. lost D. will be lost 20. She never goes to the movies…………she is very busy. A. so B. because C. if D. because 21.Do you often go out …………Saturday evenings? A. in B. at C. on D. for 22 .Hoa likes reading and …………… A. so is Minh B. Minh is too C. so does Minh D. Minh does either 23 .They don’t like milk and ……………… A. neither do we B. so do we C. we do too D. neither don’t we 24. I have two brothers and we are ……………at school. A. both B. all C. either D. neither 25. The man………………we saw yesterday is a scientist. A. whom B. whom C. which D. whose 26. I feel ……………in this book. A. interesting B. interested C. interest D. interestingly 27.Vietnam is a …………country. A. develop B. developed C. developing D. development 28.There is …………time. Let’s hurry. A. a lot of B. few C. a few D. not much 29.This house is ………………of the three. A. old B. older C. oldest D. the oldest 30.If it …………, we’ll have the party outside. A. rains B. doesn’t rain C. rained D. didn’t rain help me !
Giải chi tiết và khoa học tí nhé ae
Câu3.Cho 2 bóng đèn mắc nối tiếp như hình vẽ trên. số chỉ ampe kế là 0,2A, vôn kế V1 là 4V, V2 là 3V a, tính hiệu cường độ dòng điện ở 2 đèn Đ1 và Đ2 b, tính hiệu điện thế ở 2 đầu đèn Đ1, Đ2 và 2 đầu MN
Tfim giá trị nhỏ nhất A=|x-2004|+|x-2005|+|x-2006|+|x-2007|
Câu 1: Cho tam giác ABC vuông tại A, đường cao AH. Gọi M,N lần lượt là chân đường vuông góc kẻ từ H xuống AB, AC. Chứng kinh rằng: a) Tam giác MAH đồng dạng với tam giác HAB b) AC.AH = BC.MA c) Cho AB = 6cm, AC = 8cm. Tính BC, AH, MA, MH
1)He has finished his homework about natural disasters --->His homework about natural disaters........................ 2)Huong doesn't tidy the house.Her mum fells angry(Conditional sentence) --->If Huong...................... 3)The polluted water makes a lot of underwater animals die ---->A lot of underwater animals die because of...................... 4)Marry is not as tall Peter ---->Peter
Chỉ cần lm mỗi câu D thôi ạ Mong mn giúp mk
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