Tên 2-metyl propan-1-ol ứng với chất nào

Một hình thang có diện tích 36 cm2, chiều cao bằng 6 cm, đáy lớn bằng 7 cm. Đáy bé của hình thang đó bằng:

dùng mảnh vải khô để cọ xát vào một ống bằng nhựa hoặc một ống bằng nhôm, hỏi ống nào sẽ mang điện tích?Vì sao

tìm x thuộc Z biết a) Tìm số nguyên x sao cho x – 1 là ước của 12 . b) Tìm số nguyên x sao cho x + 10 là bội của x + 3 . c) Tìm số nguyên x sao cho x – 2 là ước của 7 . d) Tìm số nguyên x sao cho x + 5 chia hết cho x – 2 . ghi rõ ra hộ mik với ạ , đừng ghi tắt

Chuyển động cơ học là sự thay đổi

Mọi ng ơi giúp mk câu 6 vs ạ mai mk nộp r

ai giúp mình với II. Put the verbs in brackets into the correct form. 1. Nam often (play) ____________ soccer in the afternoon. 2. My father used to (go) ____________ swimming when he was a child 3. What about (go) ____________ to the zoo on Sunday evening? 4. Tien Dung goalkeeper (live) ____________ Thanh Hoa city since 1997. 5. I used to (go) ____________ to the zoo on Sundays when I was a child. III. Choose the word whose underlined part needs correcting. 1. She speaks and listens to English very good. 2. There didn’t used to be electricity when they were on the farm. 3. The armchair is in the living room, among the television and the sofa. 4. I use a dictionary learn new words, pronunciation and examples. 5. In the past, he had doing everything without the help of modern equipment. C. READING I. Read the following text and decide which answer best fits each numbered blank. Ewan McGregor was (1) __________ in Scotland in 1971. He decided to be an (2) __________ when he was only nine and he (3) __________ his first film in 1992. So far in his career he has appeared (4) __________ a lot of different types of films, including comedies, musical, dramas and the Star Wars movies. In his career Ewan has worked with like actresses Cameron Diaz and Nicole Kidman, and his films have won lots of awards. He loves acting and when he finished (5) __________ the musical, Moulin Rouge, he said, “I have never been happier to do anything in my life”. 1. A. bear B. born C. bearing D. to bear 2. A. acting B. actress C. actor D. action 3. A. made B. played C. worked D. starred 4. A. at B. on C. with D. in 5. A. to film B. filmed C. film D. filming II. Read the following text and answer the questions by choosing the option A, B, C or D. Yesterday, on the way home from school, I saw an accident. A boy was run over by a taxi when he was riding his bicycle. The boy’s leg was broken and it was bleeding badly. Someone there tried to stop the bleeding. They put pressure on it and held it tight. A man used his mobile phone to call the emergency service. Some minutes later, an ambulance arrived and sent the boy to the hospital. Two policemen came to the scene immediately. Some people told the police that the taxi was driving at a very high speed when the accident happened. Some others began talking about the traffic accidents these days and blamed the increasing number of accidents on the roads for careless driving and drunk drivers. 1. What did the writer see yesterday? A. a fire B. an accident C. a fighting D. a crash 2. The accident happened between a taxi and __________. A. a bus B. a car C. a bicycle D. a motorbike 3. The boy was sent to the hospital by __________. A. a police B. a car C. an ambulance D. a passenger 4. What part of his body was hurt? – His __________. A. arm B. leg C. head D. shoulder 5. How was the driver driving when the accident happened? – Very __________. A. slowly B. fast C. carefully D. well

Trung hoà 400 ml dd axit axetic 0.5M bằng dd NaOH 0.5M . Tính thể tích dd CH3COOH đã phản ứng

Nêu những cây sống trên đồi trống

Câu 8 công nghệ Ai giúp mình với ;-;