1/water____of hydrogen and oxygen A consists B consist C is consited D is consisting 2/ It is too late to phone mary at the present. I______ her tomorrow morning A phone B phoned C have phoned D am phoning 3/ ______ Da Nang____ by thousands of tourists every year? A is/ visiting B is/ visited C does/ visit D has/ visited 4/ Why_____ you absent yesterday? A did B are C was D were 5/ Who_____ you at the airport last Sunday? A meet B met C did meet D were met 6/ Lan watched a movie after she ______ her homework A has done B have done C did D had done 7/ when he come home, everybody ____dinner A had B was having C were having D is having 8/ Daisy's friend _____ out when she arrived at the theatre A goes B has gone C have gone D had gone 9/ phong_____ that the plan will be change A has told B has just been told C has been just told D had just been told 10/ when I was a secondary school student, I_____ a scholarship A use to award B used to award C used to be awarded D use to be awarded 11/Many people _______ for posting false information on the Internet A fined B have fined C are fined D was fined 12/ If our school are still closed because of the pandemic, we____ to study online A would try B wouldn't try C tried D will try 13/ Her English is not good. If she_____ English well, she______ able to get a good job in a foreign company A speak / can be B spoke/ were C speak / were D spoke / would be 14/If everybody ______ to the fight against covid-19, we will win soon A contribute B contributes C are contributing D is contributed 15/ Afrer larry______ the film on TV, he decided to buy the book A have seen B has seen C had seen D saw 16/ Tom _____ to the party many months ago A is invited B was invited C is being invited D was being invited 17/ Hurry! The train _______ I don't want to miss it A comes B is coming C come D has come 18/ while her husband was in the army, Janet_____ to him twice a week A wrote B was writing C was written D had written 20/ A lot of money ______to help The government to overcome difficulties in the fight against covid-19 so far A has been donated B has donated C had been donated D donated 21/ The online lesson on TV _____ at this time A studies B is being studied C has been studied D was studied 22/ Henry_____ into the restaurant when his friend was having dinner A was going B went C has gone D had gone 23/ Ask her to come and see me when she____ her work A finish B has finished C finished D finishing 24/ I wanted to know _____return home A when would she B when will she C when she will D when she would 25/ " Can you ofen the door for me ,tom?" Ann asked A .ann asked to open the door for her .tom B ann asked tom to open the does for her C.ann asked tom open the door for her D.ann asked tom to open the door for her 26/ i think you schould stop playing game A. If i am you ,i will stop playing game B. If i were you .i will stop playing game C.if i were you ,i would stop playing game D. If had been you ,i would stop playing game 27/we ofen do our online peactice tesrs very responsubly A.our online peactice tests very responsibly are ofen done B. Our online practice tests are often do very responsibly C our online practice tests are often done very responsibly D our online practice tests are very often responsibly done 29/ They have changed the date A the date of the meeting has been changed B The date of the meeting have been changed C the meeting has been changed the date D the date of the meeting has changed 37/ An online meeting / going/ hold/ discuss / how/ teach online / next week A An online meeting is going to hold to discuss how to teach online next week B An online meeting are going to be held to discuss how to teach online next week C An online meeting is going to be held to discuss how teaching online next week D An online meeting is going to be held to discuss how to teach online next week

"Trẫm dựa vào sự thuận lợi của đất ấy để định chỗ ở các khanh nghĩ thế nào? " Cảm nghĩ của em về cái hay trong khi kết thúc văn bản Chiếu dời đô. Đồng thời rút ra cho mình bài học về sự ứng xử . Giúp vs ạ cần gấp

Bài 1. (2 điểm) Tính a) 49 + (11 – 25) b) -8 + 5 . (-9) c) 40 – (-7)2 d) | -15 + 21| – | 4 – 11| Bài 2. (2 điểm) Tính tổng các số nguyên x, biết: a) -3 < x < 2 b) -789 < x ≤ 789 Bài 3. (3 điểm) Tìm x ∈ Z, biết: a) x + 9 = 2 - 17 b) x - 17 = (-11) . (-5) c) |x – 5| = (-4)2 Bài 4. (3 điểm) Tìm các số nguyên x sao cho: a) -7 là bội của x + 8 b) x – 2 là ước của 3x – 13

Ai giúp mik dzới sắp nộp rùi huhu

cho dung dịch HCl 10^-4 M. Hỏi phải thêm thể tích nước gấp bao nhiêu lần thể tích dung dịch ban đầu để được 1 dung dịch có Cm =10^-5

Câu 1: hãy chỉ ra phương trình bậc nhất 1 ẩn trong các đa thức sau? a) 2x - 1 = 0 b) 1 + x = 0 c) 0x + 2 = 0 d) 8x + y = 0 Câu 2: hãy chỉ ra hệ số a,b trong các phương trình bậc nhất 1 ẩn sau? a) 3x + 1 = 0 b) 3 - x = 0

nếu lm đúng cho 5 vote 1 cảm ơn 1 trả lời hay nhất : Bài 1 : quy đồng mẫu số các phân số sau a) 11/18 ; 5/9 ; 7/12 b) 31/48 ; 5/16 ; 11/16 c) 7/-25 ; 1/15 ; 1/3 d) 19/22 ; 5/6 ; -29/33 Bài 2: quy đồng mẫu số các phân số sau a) -13/240 và -7/80 b) 3/-10 và -5/21 c) 7/60,3/-40 và -11/30 d) 5/21,-3/28 và -45/108 Bài 3 rút gọn rồi quy đồng các phân số sau: a) -51/136 ; -60/108 ; 26/-156 b) -165/270 ; -91/-156 ; 210/1134 Bài 4: so sánh các phân số sau: a) -4/17 và -24/102 b) -14/35 và -26/65

Bài 1 Cho tam giác ABC vuông tại A, phân giác BM, kẻ MD vuông góc với BC tại D. a. Chứng minh BMA= BMD b. Gọi E là giao điểm của MD và AB. Chứng minh AC = DE. c. Chứng minh AAME = ADNC d. Kẻ DH 1 MC, AK I ME(H c MC, K e ME), DH cắt AK tại N. Chứng minh MN là tia phân giác góc KMH. e. Chứng minh 3 điểm B, M, N thắng hàng f. Chứng minh BN L AD, BN 1 CE. g. Tam giác ABC cần thỏa mãn điều kiện gì để tam giác ADN đều. Từ đó chứng minh N thuộc EC. GIÚP MÌNH VỚI .SÁNG MAI MÌNH NỘP RỒI

Giúp mk vs làm hoài mà hông đc Hứa sẽ vote 5 sao ạ C.ơn nhiều

Ex2:Rewrite following sentences 1Ha Noi is the North of Viet Nam.It is very peaceful 2The food is delicious .John cooks the food 3They called a police man.Her lived nearby 4Nam's mother was born in Nha Trang.She was a worker 5They stopped in London.The had never invisited this city before