1/ C2H5OH a) đọc tên gọi b) đọc tên thay thế 2/ Cho các chất C2H2, C3H4, C4H6, C5H8 tác dụng với AgNO3/NH3 tạo ra kết tủa gì

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question14. In the kitchen Mom: “Pour the cooking oil into the pan, wait to heat it before frying something” Daughter: “____________” A: You’re welcome B: I see C: It’s good D: It’s not true 2 Choose the best answer A, B, C or D to complete the sentence. Question9. Yoga helps us learn _______ to co-ordinate breathing and movement. A: when B: how C: why D: what 3 Choose the sentence which has a similar meaning to the first one. Question 22. I only remembered we had a meeting when you called me. A: I didn’t remember about our meeting until you called. B: I was happy because you remembered to call me for the meeting. C: You always phone me to remind me of when our meeting is. D: As soon as I realized that we had a meeting, you called me. 4 Choose the best answer A, B, C or D to complete the sentence. Question11. Life in a small town is _______ than that in a big city. A: much more peaceful B: peaceful C: less peaceful D: much peaceful 5 Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A: unique B: cloudy C: harmful D: slowly 6 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (18). My village is about 50 kilometers from the city center. It is a very (17)________ place where people plant flowers and vegetables only. It is very famous for its pretty roses and picturesque scenes. The air is quite fresh, however, the smell of the roses make people (18)________cool. In spring, my village looks (19)________ a carpet with plenty of colors. Tourists come to visit it so often. Nowadays, with electricity, it doesn’t take the villagers much time to water the roses. A: felt B: feel C: to feel D: feeling 7 Choose the best answer A, B, C or D to complete the sentence. Question10. In the Central Highlands, the biggest and tallest house in the village is the _______ house. A: communication B: communal C: community D: commune 8 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) to each of the following questions. Question15. The Thai worship their ancestors. Every year they hold festivals and ceremonies with alternating songs between boys and girls, and many traditional games. A: fathers B: grandfathers C: grandparents D: forefathers

TÌM phân số a/b bằng phân số 60/108 biết : a/ UCLN ( a,b) = 15 b/ BCN. ( a,b ) = 108

Giải phương trình 5/x^2+x-6 - 2/x^2+4x+3 = -3/2x-1

Cho hình bình hành ABCD(góc A nhọn,AB nhỏ hơn CD),ĐƯờng tròn A,AB cắt đường thẳng BC tại E.ĐƯờng tròn (C,CB)cắt đường thẳng BA tại F. 1)Chứng minh tứ giác ADCF và tứ giác ADCE là hình thang cân 2)4 đỉnh của hình thang cân ADCF cùng thuộc 1 đường tròn 3)A,D,C,E,F cùng thuộc 1 đường tròn

Vẽ tranh phong cảnh cổ trang bất kì:)

Bạn nào đẹp trai xinh gái giải hộ mình bài 2 , 4 ,5 được không ạ ? Mai là hạn Chót rồi

Câu 1: Tính a) -|−17|+ 2. [24:(−8)+(−5²)] b) -|-7|.[(−2)^4 + (-36): (-3²)] - (−5)³

Hãy vt đoạn văn nghị luận khoảng 200 từ trình bày suy nghĩ của em về hậu quả của việc con người không nghiêm khắc với bản thân.

1 cano đi xuôi dòng từ A đến B mất 6h và đi ngược dòng từ B về A mất 9h tính độ dài quãng đường AB biết vận tốc dòng nước là 3km/h