Cho tam giác ABC. E là giao của 2 đường phân giác ngoài tại B;C. Chứng minh AE là tia phân giác của góc A

bài 1:tìm x,y: a)19/20-y=8/3-3/4 b)y:2/3=4/9x3 c)7/9:X=28/15 d3/98 x X=9/10 e)X:12/13=2/5 f)7/5-X=1/2 lưu ý:X là chữ,x là dấu*

viết phương trình in ra màn hình bảng nhân của 1 số từ 1 đến 9 dùng while do và dừng màn hình để có thể quan sát kết quả GIÚP E VS Ạ

Read the following passage and mark the letter A, B, c, or D to indicate the correct answer Pronouncing a language is a skill. Every normal person is an expert in the skill of pronouncing his own language; but few people are even moderately proficient at pronouncing foreign languages. There are many reasons for this, some obvious, some perhaps not so obvious. But I suggest that the fundamental reason why people in general do not speak foreign languages very well is that they fail to grasp the true nature of the problem of learning to pronounce, and consequently never set about tackling it in the right way. Too many people fail to realize that pronouncing a foreign language is a skill - one that needs careful training of a special kind, and one that cannot be acquired by just leaving it to take care of itself. I think even teachers of languages, while recognizing the importance of a good accent, tend to neglect, in their practical teaching, the branch of study concerned with speaking the language. So the first point I want to make is that English pronunciation must be taught; the teacher should be prepared to devote some of the lesson time to this, and should get the student to feel that here is a matter worthy of receiving his close attention. So, there should be occasions when other aspects of English, such as grammar or spelling, are allowed for the moment to take second place. 28. What does the writer actually say about pronouncing foreign languages? A. Only a few people are really proficient. B. No one is really an expert in the skill. C. There aren’t many people who are even fairly good. D. There are a lot of people who are moderately proficient. 29. The writer argues that going about the problem of pronunciation in the wrong way is_______. A. an obvious cause of not grasping the problem correctly B. a fundamental consequence of not speaking well C. a consequence of not grasping the problem correctly D. not an obvious cause of speaking poorly 30. The underlined word “one” in the passage refers to_______. A. skill B. careful training C. special kind D. itself 31.The best way of learning to speak a foreign language, he suggests, is by_______. A. picking it up naturally as a child B. learning from a native speaker C. not concentrating much on pronunciation D. taking on systematic work 32.The underlined word “aspects” in the passage probably means_______. A. pronunciations B. parts C. words D. sentences Giúp

Viết một bài văn nghị luận về nhân vật phương định

Cho đa thức P(x)=ax^2+bx+c.Hãy tìm hệ số a,b,c biết P(0)=1;P(1)=3;P(-1)=2

Bạn nào làm giúp mik bài này với.

ở thực vật có hoa, mỗi hạt phấn có bao nhiêu tế bào sinh dục đực tham gia vào quá trình thụ tinh? A.1 B.8 c.7 D.2

vẽ sơ đồ mạch điện gồm:1 nguồn dây dẫn, 3 công tắc, 3 bóng đèn D1, D2,D3 thỏa mãn: Khi K1 đóng, K2, K3 mở thì đèn 2 sáng. Khi K2 đóng, K1, K3 mở thì đèn 1 sáng. Khi K3 đóng, K1, K2 mở thì cả 3 đèn đều sáng (Chỉ cần biểu diễn theo 1 trường hợp thôi nhé)

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