Cho hàm số $y=(2m+1)x+2$ 2. Tìm $m$ để $(d)$ tạo với trục tung và trục hoành một tam giác có diện tích bằng 2 (đơn vị dt)

Để kiểm tra độ thuần chủng của cơ thể đem lai, G.Menđen đã sử dụng: A. phép lai thuận nghịch. B. phép lai khác dòng. C. phép lai xa. D. phép lai phân tích.

c. Cho biết những oxit bazo nào sau đây tác dụng được với axit H2SO4( viết phương trình hóa học minh họa): CuO, MgO, FeO, Na2O

1. Mr. Hung doesn’t walk to school now. He used _____________________________ ____________________________________ 2. We haven’t eaten this food before. We didn’t _________________________________________________________________ 3. You must finish all of your homework before going to bed. You have _______________________________________________________________ 4. Did you go to a kindergarten when you were a child? Did you use _____________________________________________________________ ?

16dam2 10m2 =...................m2

giúp ạ .............................

từ láy có vai trò gì trong việc diễn tả cảm xúc của nhân vật?

25 + 4 ( 12 - x ) = 16 help meeeee!!!! i need your help

Tìm số tự nhiên a,b sao cho a) ab=15 b)(2a+1)b=20

. Choose the best answer to complete each of the following sentences. 1.    What’s the date today ? - It is     ____ June.     A. twelve    B. twelfth    C. twelve of    D. the twelfth of 2.    How many windows are there in your house? - ____ six.     A. There is    B. There are    C. There has    D. There have 3.    ____is Phong ? - He’s in the living room.     A. When    B. Where    C. Who    D. What 4.    Which verb adds _____es in the third person?     A. go    B. write    C. sleep    D. tell 5.    _____a clock in your room?     A. Are there    B. Is there    C. Have there    D. Has there 6. There are a lot of things    _____in Da Lat .     A. see    B. to see    C. seeing    D. to seeing 7. It is called the Tiger room_____ there is a big tiger on the wall.     A. because            B. so     C. but    D. like 8. I live______ my parents and my younger sister in a town house _____ Ha Noi.     A. with - at    B. at - at    C. of - in    D. with - in 9. We are moving______ a new house _____ the city centre soon.     A. to - in    B. at - at    C. to - from    D. from - in 10. We live in a town house, but our grandparents live in a______ house.     A. villa    B. country    C. apartment    D. city 11. There are two lights____ the ceiling.     A. at    B. in    C. on    D. between 12. There is a family photo    _____the wall.     A. on    B. at    C. in    D. next 13. There______ four chairs and a table _____ the middle of the room.     A. is - on    B. is - in    C. are - at    D. are - in 14. We need some chairs ______the kitchen.     A. with    B. for    C. at    D. on 15. There are some dirty dishes _____the floor.     A. in    B. with    C. on    D. for 16. There is an electric    ________, a stove and a fridge in our kitchen.     A. cooking    B. cooker    C. cook    D. cooked 17. They are having lunch in their beautiful big ______room.     A. dined    B. dinner    C. dine    D. dining 18. He should clean his    _______room. There are a lot of toys and clothes on the floor.     A. messy      B. mess        C. messing                D. messed 19. They look around their new apartment with lots of________ modern devices.      A. interest          B. interested        C. interestingly    D. interesting 20. Your cupboard is too old. Let's_____ a    new one.     A. buy          B. bought        C. buying    D. to buy 21. My father is watching TV in the_____ while my mother is cooking in the_____. A. living room/ bedroom            B. bedroom/ bathroom C. living room/ kitchen                D. kitchen/ hall 22. His uncle climbs the ladder and puts old things in the_____. A. attic        B. toilet            C.    hall            D. bathroom 23. Many people live in_____ in mountainous areas to avoid dangerous animals. A. town houses        B. villas            C.    stilt houses        D. apartments 24. It's so hot in my living room because the_______ was broken.     A. fridge        B.    air-conditioner    C. dishwasher        D. cooker 25. You should tidy up your clothes in the_____. They seem so messy.     A. sofa        B. cupboard    C.    sink            D. wardrobe 26.    Don’t stand ________ the TV I’m trying to watch this programme.     A. behind    B. next to    C. under          D. in front of 27.    You should never stand ________ a tree when it is raining,     A. at    B. under    C. between        D. on 28.    My mother is in the ________ baking a cake for my birthday.     A. bathroom    B. dinning room    C. kitchen        D. bedroom 29.    Please turn the ________ on. It’s so hot in here.     A.fan    B. light    C. television        D.