Bài 1. Tính hợp lý ( tính nhanh ) 1) (–12) +6.(–3) 2) (36 -2020) + (2019 -136) – 27 3) (144 – 97) – (244 – 197) 4) (–24).13 – 24.( –3) 5) 54+55+56+57+58-(64+65+66+67+68) 6) 24(16 – 5) – 16(24 – 5) 7) 47.(23 + 50) – 23.(47 + 50) 8) (-31). 47 + (-31). 52 + (-31) Bài 2: Tìm số nguyên x, biết: 1)-17-(2x-5)=-6 2) 10-2(4-3x)=-4 3)-12+3(-x+7)=-18 4)-45:[5.(-3-2x)]=3 5) x.(x+3)=0 6) (x-2).(x+4)=0 7) x.(x+1).(x-3)=0

Giúp mình nha mình sẽ cho quà và thưởng

TEST 2 I. Hãy tìm một từ khác loại với những từ kia. 1. milk, coffee, fish, meat, chair ______________________________ 2. Monday, July, Wednesday, Friday ______________________________ 3. chair, TV, couch, stereo, bus ______________________________ 4. beans, carrots, potatoes, peas, lemonade ______________________________ 5. chicken, toothpaste, egg, beef, fish ______________________________ II. Hãy điền mạo từ (a, an hoặc the) vào chỗ trống nếu cần thiết. Mr Tan is__________ (1) teacher. He's teaching in__________(2) school in London. Every morning he gets up at 6 o'clock, has__________(3) breakfast and__________(4) cup of__________(5) coffee. Then he goes to work by bus. He has__________(6) lunch at__________(7) restaurant near__________(8) school. In__________(9) afternoon he works until 5 or 5.30 and then goes__________(10) home. III. Hãy điền some hoặc any vào chỗ trống. 1. I have__________pictures. 2. Mrs Lan doesn't have__________children. 3. She doesn't want__________meat. 4. Would you like__________coffee? 5. There isn't__________milk in the pitcher. 6. Are there__________eggs in the box? 7. There aren't__________pictures on the wall. 8. Do you want__________fish? 9. Does your father have__________brothers? 10. They don't want__________chicken. IV. Đặt câu hỏi cho các phần trong ngoặc 1. Linh has (milk and eggs )for breakfast. ________________________________________________ ? 2. My father has lunch (at home.) ________________________________________________ ? 3. My brother wants (a glass of orange juice.) ________________________________________________ ? 4. Miss Thu likes (some cheese). ________________________________________________ ? 5. I want (a) box of peas. ________________________________________________ ? V. Đổi các câu sau sang thể phủ định và nghi vấn. 1. Hai likes some iced tea. ____________________________________________ ____________________________________________ 2. Quang wants some eggs. ____________________________________________ ____________________________________________ 3. They want some water. ____________________________________________ ____________________________________________ 4. Lan has some fruits. ____________________________________________ ____________________________________________ 5. We have some beans. ____________________________________________ ____________________________________________

cho tam giác abc cân tại a . kẻ ah vuông góc bc a ) chứng minh bh=hc b) kẻ ah vuông góc ac ,hf vuông góc với ab, hỏi hef là tam giác gì ví sao

Vẽ anime or chibi đuy :33333333333333 Hóng mí pé idol

giúp emmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

viết 1 đoạn văn tả cảnh quê hương em trong đó có vài câu đặc biệt và chỉ ra nó (ko chép mạng)

VII. Đổi các câu sau sang thể phủ đỉnh và nghi vấn. 1. Lunch is a big meal of the day. 2. Miss Lan has some coffee for breakfast. 3. Mary has some milk every morning. 4. I want some cakes. 5. They are listening to the radio now. 6. Nam and Ba like some ice-cream now. 7. She eats a lot of fruits. 8. He jogs every day. 9. We want some tea. 10. There is some fruit juice in the pitcher. VIII. Hãy viết câu với các từ gợi ý sau. 1. Lan / beautiful 6. Her lips / full 2. Nam / strong 7. His eyes / round 3. Thu / weak 8. She / slow 4. This box / heavy 9. Ba / tall 5. That chair / light 10.Mr Tan / fat IX. Hoàn tất các câu sau. 1. How__________bananas are there? 2. There__________twelve bananas. 3. Are there__________onions on the table? No, there__________ 4. __________I help you? Yes, I'd like__________cabbages. 5. __________else? Yes, I need__________eggs. 6. How__________rice do you want? 7. Mrs Tu needs__________beef. 8. She__________tall. She is short. 9. How__________is this book? Five thousand dong. 10. What do you__________? I need__________cooking oil. X. Điền vào chỗ trống trong các câu sau, dùng các trợ động từ (do, does, don't, doesn't) 1. I want some rice, but my friend ______________________________. 2. Nam doesn't like bananas, but I ______________________________. 3. They don't like chicken, but their mother ______________________________. 4. My father likes coffee, but my mother ______________________________. 5. We don't want brown pencils, but they ______________________________.

Lập công thức hoá học và gọi tên oxit có khối lượng mol là 40g/mol trong đó oxi chiếm 40% về khối lượng

Viết một đoạn văn (khoảng 200 chữ) bàn về trách nhiệm của thế hệ tra đối với đất nước.