trường hợp nào sau day sinh ra công cơ học f=500n s=100m , f=250n s=500 , f=250n s= 20m , f=75n s=200m vi sao

Lớp 7A 7B 7C 7D 7E Số học sinh giỏi 32 28 32 35 28 a)Cho biết đơn vị điều tra b) Lập bảng tần số và nhận xét c) Vẽ biểu đồ đoạn thẳng

Viết chương trình nhập vào hai số nguyên A, N. Tính và in ra màn hình tổng N chữ số cuối của A. Viết chương trình pascal giúp mình

write about a favorite sport(KO CHÉP MẠNG NHA) mik mới lớp 7 thôi nên đừng viết cao siêu quá

Cho mp với hệ tọa độ Oxy cho đg thẳng d có pt :y=(m-1).x+n A, với giá trị nào của m và n thì d//với trục 0x B, Xác Định pt của d biết d đi qua điểm A(1,-1) Và có hệ số góc = -3

a/ 17.25+23.(-17) b/ 85.(35-17)-15.(40-55) c/ 3-4+5-6+...+99-100

đôt chay hoàn toàn 2,7g nhôm vs oxit trong khong khí thu duoc nhom axit a) viet pthh cua phan ung, b) tính thể tích của oxi(dktc) can dung dot cháy luong nhom nói trên c) tính khối lượng nhôm oxit thu duoc sau phan ung

Viết chương trình nhập vào số nguyên dương N. Tính và đưa ra màn hình Tổng S như sau: S = 1+ 2^2 + 3^3 + 4^4 ... + n^n Viết chương trình giúp mình

7hm2 5m2 ...................dam2

giúp mik vs các bạn Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions. Pronouncing a language is a skill. Ever}' 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