So sánh các số hữu tỉ sau: -5/11 và -9/23 , -17/25 và -14/28

Tìm giá trị nhỏ nhất của A= |x-2006|+|2007-x| khi x thay đổi.

Một ô tô chuyển động trên nửa đầu đoạn đường với vận tốc 60 km/h. phần còn lại, nó chuyển động với vận tốc 15 km/h trong nửa thời gian đầu và 45 km/h trong nửa thời gian sau. Tìm vận tốc trung bình của ô tô trên cả đoạn đường.

Điểm mới trong xu hướng cứu nc đầu thế kỉ XX

Bình nước ở nhiệt độ 20c khi đun nóng lên 80c thì thể tích nước tăng hay giảm

cho mik câu trl nhanh nhất^^ đúng nha cần gấp

1. The water is contaminated, so people get serious diseases. →If_______________________________. 2. Put trash into the garbage bins or the street will become a garbage dump. →If we_________________. 3. They have invented new devices to help people live a longer life →New devices_________________________. 4. "I'm going to read a book about Thomas Edison tomorrow" → Nick said that_________________________. 5. Today isn't a holiday, so we cannot go to the beach. → If__________________________.

Vẽ đậu mầm NL:Khi t đam mê buff thì pk lm sao=))

. Make sentences from the words in brackets. 1. Don’t phone Ann now. (she might/ have/ lunch) She might he having lunch, 2. I ate too much. Now I feel sick. (I shouldn’t/ eat/ so much) I shouldn’t have eaten so much. 3. Why did you go home early? (you needn’t/ go/ home early) ____________________________________________________________________________________ 4. I wonder why Tom didn’t phone me. (he must/ forget) ____________________________________________________________________________________ 5. You’ve signed the contract, (it/ can’t/ change/ now) ____________________________________________________________________________________ 6. What’s Linda doing? ~ I’m not sure. (she may/ watch/ television) ____________________________________________________________________________________ 7. Ann was standing outside the cinema. (she must/ wait/ for somebody) ____________________________________________________________________________________ 8. He was in prison at the time that the crime was committed, so (he couldn’t/ do/ it) ____________________________________________________________________________________ 9. Why weren’t you here earlier? (you ought/ be/ here earlier) ____________________________________________________________________________________ 10. Why didn’t you ask me to help you? (I would/ help/ you) ____________________________________________________________________________________ 11. I’m surprised nobody told you that the road was very dangerous. (you should/ warn) ____________________________________________________________________________________ 12. George was in strange mood yesterday, (he might not/ feel/ very well) ____________________________________________________________________________________

19 - 5 - 1980 $-$ 19 - 5 - 2021 + Chúc mừng sinh nhật Người. Vị cha già của dân tộc. - Khắc họa lại hình ảnh của Bác.