một vật đặt trên mặt bàn nằm ngang Vật Bị tác dụng bởi một lực kéo theo phương nằm ngang chiều từ trái sang phải và có cường độ bằng 6n biểu diễn lực kéo trên bằng vectơ với tỉ xích 1cm ứng với 2n

Tổng của hai số là số chẵn lớn nhất có ba chữ số số hạng thứ 2 là 59 tìm số hạng thứ nhất

Sắp xếp kim loại theo chiều tăng dần: Mg( Z=12) Rb (Z=37) K(Z=19) Cs(Z=55) Ca(Z=20)

Cho hình thoi ABCD có cạnh bằng 1 , Góc BAD = 60 độ , AD cắt BD tại O . tính độ dài : a) véc tơ AB + véc tơ AD b) véc tơ AB - véc tơ BC c) véc tơ AC + véc tơ BC

Cho x ∈ [0;3], y ∈ [0;4]. Tìm GTLN của P = (3 - x)(4 - y)(2x + 3y/2)

Câu phát biểu nào dưới tính chất của một vật tạo bởi gương cầu lồi: A.độ cân bằng trắng

DERIVATIVES or WORD FORMATION Ex1: 41:Send the letter by .......... if you want it to reach the recipient in time (AIR) 42:The ...........in the area are against the building of the expressway (RESIDE) 43:Come to stay at our hotel we are sure to give the greatest ..........and good service (COMFORTABLE) 44:The supermarket is offering a wide ..........of spring clothes for you yo choose from (SELECT) 45:Rice cooked in clay pot is one of the ........in this restaurant (SPECIAL) 46:I want to become a press ............when I grow up (PHOTOGRAPH) 47: Hoa brought a dictionary in her .........for the E nghlish lesson (PACK) 48:As soon as my younger brother could tell the time ,he was given ..........(WRIST) 49:Television is one of the cheapest form of ............(ENTERTAIN) 50: I prefer the ........... village to the noisy city (PEACE) 51: Some of my .............are living in the countryside (RELATION) 52:My father plans to live............in the countryside after he retires (PERMANENT) 53:Read the user's manual carefully ,it will give you a lot of useful .............(INFORM) 54:This part of the library is for college students only it is not ..........to high school pupils (ACCESS) 55:I didn't sleep very well that night and got a terrible headache the ..........morning (FOLLOW) 56:Few people want to eat that restaurant because of the ..... smell from the garbage dump nearby (PLEASE) 57:Our ........are doing their best to improve the people 's quality of life (GOVERN) 58:What's the ..........time of your flight? (DEPART) 59:I'm going to buy a motorcycle .I'm tired of riding on ..........bese (CROWD) 60:English is an ..........and impoetant subject (INTEREST ) 61:The most popular after school ..........in our country is soccer (ACT) 62:Today we have literature ,.............education and hictory (PHYSICS) 63:The library in our city has over 50 ............(EMPLOY)

con bao nhiêu ngày thì bố bao nhiêu tuần bố hơn con 30 tuổi.Tình tuổi mỗi người.

DERIVATIVES or WORD FORMATION Ex1: 21:We enjoy listening to some .......folk songs when we were in Hue (TRADITION) 22:The old man was highly respected for his .............(WISE) 23:My sister was very ...........when her cat was run over by a car (SET) 24:There was great ..........in the cuty when the team won the Football cup (EXCITED) 25:There should be a law to prevent ..........to anmals (CRUEL) 26: His ...........at the party embarrassed everyone (BEHAVE) 27: Our project wouldn't be successful without you kind ..............(COOPERATE) 28: ..........in the sports competition is open to everyone regardless of age and ***** (PARTICIPATE) 29 :Our English lessons always begin with a .........drill of the new words (PRONOUNCE) 30:On the whole the hotel provide .........service (SATISFY) 31:Read through the passage and ........any words you don't understand (LINE) 32: You don't have to .............the grammar rules to be able to do these exercises (MEMORY) 33:Remember to check for ...........mistakes before hading in your composition (SPELL) 34:If you want to join the club ,please fill in this .............(APPLY) 35:Do you happen to know what summer .......our school are going to arganize?(ACTIVE) 36:I think ...........games are good for our health (DOOR) 37:One of the aims o the International Scout Association is to encourage good .............(CITIZEN) 38:Madonna's latest album can be found in music shops .............(WORLD) 39:Pedestrians shuold walk on the ..........,not in the street (WALK) 40:Tom failed to be admitted to the university because of his poor ............achiveements (ACADEMY)

DERIVATIVES or WORD FORMATION Ex1: 1 :After his parents died ,he was sent to an ...........(ORPHAN) 2:Some of my ............(CLASS) are going to my birthay party 3:Huy makes friends very easily beacause he is very (SOCIAL) 4:Is this bag big enough for these ............(GROCER) 5:We like our Math teacher for these ............(HUMOROUS) 6:He is the most respected person in my .............(NEIGHNOR) 7:Tam and Quang rarely talk freely about themselves .They 're very .........(RESERVE) 8:We are making .........for the trip to dien bien next week (ARRANGE) 9:Tom is woring as an ........to Professor Brown (ASSIST) 10:I can think of ...........reason for not attending the metting (COUNT) 11:They are ........a new computer system at the computer Exposition (DEMONSTRATION) 12:Some ............ are not very satisfied with the service of Thang Loi hotel (CUSTUMS) 13:The conpany has arranged for the ..............of the furniture to Mrs .Lien's home (DELIVER) 14: Be careful to cover the .............sockest for the safety of the children (ELECTRIC) 15: Every .......... in my neighborhood has at least one TV set (HOUSE) 16:The children ...........himself by playing with a kitchen knife (INJURY) 17:I am going to shop for a rice.................what brand do you recommend (COOK) 18:Cook the meat in the ..........for at least 30 minutes (STEAM) 19:The thief had ...........before the police arrived (APPEAR) 20:You can buy sports .........at the store overthere (EQUIP) )