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Bài 1 Thực hiện phép tính : a,(2x^2-3x)(5x-2x+1) b,(x-2y)(3xy+5y^2+x) Hai bài c và d làm bằng cách dùng phân thức c,( x^2-25):(5-x) d,(x^5+x^3+x^2+1):(x^3+1)
1)I'm told you are ill.I hope you ______better again. a)will fell b)fell c)are felling d)don't fell 2)We were getting tired ,so we stopped _________lunch. a)have b)having c)to have d)for having 3)_______you____to school every morning ? a)Does ...walk b)Do....walk c)Will ....walk d)Are ....walking 4)He enjoys_____cycling at the weekend . a)to go b)going c)goes d)go 5)You needn't wear your coat .It ______cold today. a)will be b)won't be c)doesn't be d)is 6)We_________swimming because it's fun and good exercise. a)like b)are liking c)living d)to living 7)My grandparents don't like ______in the city because it's noisy and crowded a)live b)lived c)living d)to living 8)fire needs oxygen to burn .It ______without oxygen. a)burn b)burns c)don't burn d)doesn't burn 9)How much time do you spend ____the Internet per day? a)surf b)to surf c)surfing d)to be surfing 10)I don't mind _____a DVD ,but I prefer_____to the cinema a)to watch -to go b)watching-go c)to watch-going d)watching -to go 11)My family enjoys _____because we can sell vegetables and flowers_____money a)garden-to b)gardening -for c)gardening- with d)garden-for 12)If your hobby is greeting card making ,you can give your____to your friends as presents . a)hobby b)money c)greetings d)products 13)My sister's hobby is sewing,and she can get the sewing patterns from the ____magazines. a)fashion b)cooking c) sports d)science
Change the following sentences into reported speech / Thay đổi các câu sau thành bài phát biểu được báo cáo. 6. "Please, help me to make a decision" Ann asked her friend -> 7."Be a good girl and sit quietly for five minutes" the nurse said to the child. -> 8. My sister said to me"Are you crazy?" -> 9. She asked me "Have you ever seen a flying saucer?" -> 10. J said " Do you want me to send this letter for you". ->
viết công thức electron và công thức cấu tạo của các chất sau: NaHCO3, KHSO4, NaH2PO4, HNO3, NaNO3
Choose the words whose underlined part is pronounced differently from that of the others in each group: 1. A. result B. unusual C. uncle D. difficult (u) 2. A. piano B. fish C. like D. badminton (i) 3. A. rest B. help C. garden D. identify (e) 4. A. g(a)me B. (a)rrange C. sk(a)te D. c(a)ke 5. A. yogurt B. doll C. collect D. hobby (o) 6. A. eggs B. cups C. cartons D. noodles (s) 7. A. soup B. salt C. sauce D. sugar (s) 8. A. fridge B. rice C. spinach D. milk (i) 9. A. pagoda B. blanket C. ac(a)demy D. tablet (a) 10. A. children B. scholar C. teacher D. lunch (ch) CTLHN LUN
III. Complete the sentences with the words in the box. position creative opportunity charity narrow-minded valuable handicapped useful war invalids dedicated aware of 1. The new teacher's advice was very__________ . His students could learn English vocabulary faster. 2. It's important that the government help _______to get find jobs. 3. I'm going to apply for the _______of an English teacher at the Heart to Heart Charity. 4. Doing voluntary work gives students _________to understand the difficulties of disadvantaged people. 5. We need to make people _______of the effects of their lifestyle on the environment. 6. Mrs. Green is a_______teacher who is always willing to help her students with their problems. 7. Happy Mind Centre is a charity for mentally_______ children. 8. Someone who is ________not willing to accept ideas that are new and different from their own. 9. You need to be _______to be a good writer. skills which are very useful for your 10. Volunteering is a great way to gain some ________skills which are very useful for your future jobs. Giúp mình với mn
Giải giúp em với ạ sửa hộ luôn ạ
Tính A=1+5+5^2+5^3+...+5^49+5^50
Giúp em với ! Cho em câu trả lời ko có trên mạng nhé ! Nếu ai thấy bạn nào mà trả lời câu có trên mạng thì báo mình Con trâu,cánh đồng ,dòng sông,cánh diều , gió . Tạo nó thành cụm danh từ rồi làm thành đoạn văn !ai trả lời đúng và nhanh nhất mình sẽ cho câu trả lời hay nhất
Co lai giống đậu hà lan hath càng thuần chủng với giống đậu hà lan hạt xanh F1 toàn hạt vàng.Khi cho các cây đậu hà lan F1 tự thụ phấn với nhau thì tỉ lệ kiểu gen và kiểu hình ở F2 sẽ như thế nào ? Hãy biện luận và việt sơ đồ lai.Biết tình trạng màu hạt chỉ do một nhân tố di truyền quy định ?
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