Cho tam giác ABC trên cạnh BC lấy điểm D sao cho DB/DC=1/2 Đường thẳng qua D song song với AB cắt AC ở E đường thẳng qua D song song với AC cắt AB tại F a) so sánh tỉ số AF/AB và AE/AC b) Gọi M là trung điểm của AC chứng minh EF//BM c) Giả sử DB/DC =k tìm k để EF//BC

8. "Chèo" is considered a kind of traditional opera in Viet Nam, and "Cải lương" (oo)) (either) 9. I don't know how to use a computer, and my best friend 10. I haven't been to Africa, and my mother. (neither) V. Rewrite the sentences, using the given words. (3,0 pomts) 1. Tim is better at English than Susan. 1, uSI uesng- 2. We spent five hours getting to London. -It took 3. Listening to music gives him pleasure. - He enjoys. 4. She is more beautiful than her younger sister. - Her 5. They began studying English in 2004. - They 6. You ought to go to school now. → You'd. 7. My father works as a teacher at a high school. → My father is.. 8. We can't afford to buy the car. → The car is 9. The distance between my house to the supermarket is about 3kilometers. 10. She bought that house in 1990. - She has

complete the sentences with these words:cattle,pasture,ger,highlands,nomad 1 horses are grazing in ..... 2 Mongolia's nomads live in a traditional tent called...... 3 In Mongolia,he spent time with the nomads of the Gobi..... 4 a boy was driving the herd of ......to the pasture 5 The Maasai are.....and cattle raisers

Giúp mik Lm trắc nghiệm vs ạ T^T ( mik Lm Đc kha khá r còn vài câu ch bt ) hứa vote 5 sao and cảm ơn (đừng quan tâm mấy câu mik khoanh, có khi sai ă )

UNIT 11 ~ SOURCES OF ENERGY
I. Multiple Choice. 1. Can you play an.........guitar? A. electric B. electrified C. electricity D. All are correct. 2. Can you find any..........equipment in this department? A. electric B. electrified C. electrical D. electricity 3. You cannot grow crops on........land. A. exhaustion B. exhaust C. exhausting D. exhausted 4. I find her...........- she never stops talking. A. exhaustion B. exhaust C. exhausting D. exhausted 5. We could make better use of our........ A. environment B. sources C. resources D. atmosphere 6. She'll be able to put her languages........good use.........her new job. A. of - in B. to - in C. at - on D. in - of 7. Many people don't use their computers to their full.......... A. future B. expectation C. hope D. potential 8. The new software is planned for........in April. A. release B. issue C. delivery D. A and B 9. They're researching into ways of........people's diet. A. improvement B. improve C. improving D. improved 10. "How long is the flight?" ~ "........knowledge, it takes about 3 hours," A. To my best B. To the best of my C. In my best D. In best of my 11. We have about thirty guests a day in our restaurant........the average. A. at B. for C. on D. in 12. "1 haven't been to New York yet." ~ "Neither.........'" A. haven't we B. we have C. have we D. we haven't 13. I wrote to the company........them for a catalogue. A. asking B. demanding C. enquiring D. applying 14. They were very........about keeping so much money in the house overnight. A. dangerous B. risky C. nervous D. willing 15. "What is Bill going to do after the test?" 'The only thing he can do is A. he waited B. waiting C. hev.aits D. wait 16. They would........go by air than spend a week traveling by train. A. always B. prefer C. rather D. better 17. Some schools have very.............rules of behavior which must be obeyed. A. strong B. solid C. strict D. straight 18. He's left his book at home; he's always so......... A. forgetful B. forgotten C. forgettable D. forgetting 19.........it was raining heavily he went out without a raincoat. A. Although B. In spite of C. However D. In spite 20. 'Did Susan ever graduate?" ~ “No,........in college for two years, she quit to get a job." A. had she been B. while being C. since being D. after having been

Bài 11.Một miếng đất hình thang có trung bình cộng 2 đáy là 38m , chiều cao 25m . Tính diện tích miếng đất hình thang

Tìm tất cả giá trị của tham số m để hàm số sau có tập xác định là R Mình cần gấp ạ giúp mình với

Chứng minh rằng nếu a + b = 1 thì a^2 + b^2 ≥ 1/2

Biết hình chữ nhật ABCD có diện tích=28cm^2.Hãy tính diện tích hình bình hành?

Làm hộ mình phần1tiếng việt ới và câu 3 nha bạn lào chả lời đầy đủ mình sẽ cho chả lời hay nhất nha