Mình cần gấp vote 5 sao nha Cho tam giác ABC ( có 3 góc nhọn) các đường cao AD, BE, CF cắt nhau tại H 1.Chứng minh: tam giác ABE đồng dạng tam giác ACF và =>AF.AB=AE.AC 2.Chứng minh: tam giác AEF đồng dạng tam giác ABC
a)nhận xét sự thay đổi lượng mưa từ đông sang tây của khu vực ĐNÁ. b)tại sao có sự thay đổi lượng mưa đó???
II. Choose the correct word to fill in the blank. 1. My mother usually …………..tea in the morning. (drink /drinks /drank /is drinking) 2. Minh likes ……………… soccer. ( play /playing /plays /to playing) 3. A ……………….CD player is good because you can take it everywhere. (modern/ good/ powerful/ portable) 4. Reading is her favorite ……………………( pastime/ action/subject/sport) 5. Where are the children? - They ……………..in the garden. ( play/ played/ will play/ are playing) 6. Which of these pens do you prefer? - The………..….one. (smaller/ smallest/ small/ the smallest) 7. The most…………..……after school activities is the US are basketball, football and baseball. (active/ modern/ expensive/ popular) 8. My elder brother …………….his holiday in Nha Trang last year. (spend/ spended/ spent/ spends) 9. After recess, everyone …………….…..indoors and classes begin again. ( go/ goes/ goed/ went) 10. They ……………..a lot of souvenirs for their parents yesterday. (buy/ will buy/ buyed/ bought) 11. Hoa’s mother wants her ………………..……up early in the morning. ( gets/ got/ to get/ getting) 12. ……………….….come to the café now? ( Let’s / Why not/ What about / Why don’t)
bài 4 :tìm các động từ chỉ hoạt động có trong đoạn trích sau: Chú bé vùng dậy,vươn vai một cái bỗng biến thành một tráng sĩ mình cao hơn trượng,oai phong lẫm liệt.Tráng sĩ bước lên vỗ vào mông ngựa.Ngựa hí dài mấy tiếng vang dội.Tráng sĩ mặc áo giáp,cầm roi,nhảy lên mình ngựa.Ngựa phun lửa,tráng sĩ thúc ngựa phi thẳng đến nơi có giặc,đón đầu chúng đánh giết hết lớp này đến lớp khác,giặc chết như rạ.
Đường kính của một bánh xe là 7dm. Hỏi bánh xe lăn trên mặt đất được bao nhiêu vòng để đi được quãng đường dài 439,6m?
Giúp mình với mn ơi, mình cảm ơn nhiều
Tính bằng cách thuận tiện nhất: 11+22+33+44+55+66+77+88+99
giúp mk câu này: Nêu hình dạng chữ nét thanh, nét đậm
Choose the sentences that have the same meaning as the given ones. 7. If she did her hair differently, she would look quite nice. A. Unless she did her hair differently, she wouldn’t look quite nice. B. Unless she did her hair differently, she would look quite nice. C. If she did her hair differently, she wouldn’t look quite nice. D. If she didn’t her hair differently, she wouldn’t look quite nice. 8. If I had more time, I would help the poor. A. If I had more time, I wouldn’t help the poor. B. If I not had more time, I would help the poor. C. Unless I had more time, I wouldn’t help the poor. D. Unless I had more time, I would help the poor. 9. If you did not sneeze, he wouldn’t know that we are there. A. Unless you didn’t sneeze, he wouldn’t know that we are there. B. Unless you didn’t sneeze, he would know that we are there. C. If you sneezed, he wouldn’t know that we are there. D. Unless you sneezed, he wouldn’t know that we are there. 10. If I won a big prize in a lottery, I’d give up my job. A. Unless I won a big prize in a lottery, I would give up my job. B. Unless I won a big prize in a lottery, I wouldn’t give up my job. C. Unless I not won a big prize in a lottery, I would give up my job. D. Unless I not won a big prize in a lottery, I wouldn’t give up my job
Tìm giá trị nhỏ nhất của biểu thức : A=|x-7| +12
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