hoa is going on ... this summer.First,she is going ... Ha Long Bay , Ho Chi Ming Mausoleum ... Hoi An Ancient town ... five days . She is going to stay ... her uncke in Ha Noi . ... anh Thien Mu ...

sau khi tự tử ở giếng Loa Thành, xuống thủy cung, Trọng Thủy đi tìm Mị Châu nhưng gặp An Dương Vương. Hãy tưởng tượng và kể lại câu chuyện đó.

Cho (O;R) dây MN vuông góc vơi OA tại trung điểm H của OA.Các tiếp tuyến với đường tròn (O)tại M và N cắt nhau ở B a)chứng minh rằng 3 điểm O,A,B thẳng hàng  b)Tam giác BMN là tam giác gì?vì sao? c)Tính BM theo R

tìm x,y Ix+3y-1I+(2y-1/2)^2000=0

1, i'm sorry to bother you while you're working but i................ask you a question(can/had to/must/may) 2,we..............ensure the telegram arrives in time (had to/mustn't /'d rather/might) 3,he.................keep his family because his wages were too low(couldn't/mustn't /can't/didn't have to) 4,...........make an appointment to see the doctor?(may i/could i/will i/shall i) 5,i ...................go swimming then i young(could/would/used to/both b&c) 6,................take this letter to the post office,please?(may you/must you/would you/X) 7,in our family mu father........................sit at the top of the table(used to/had to/ought to/must) 8,i................swim in this water:it is much too cold(mightn't/mustn't/can't/don't have to) 9,you..........imagine my surprise when i heard the news(can/ought to/will/all of these) 10,you................do some work instead of sitting there reading the paper(would rather/ought to/won't/don't have to) 11,be careful how you hold that jug it.............break easily(may/ought to/will/might) 12,i am not sure where to go for my holiday,but i......................go to china(should/may/have to/needn't) 13,we hag free tickets,so we.................pay to get into the concert(didn't have to/couldn't/mustn't/shouldn't) 14,shall i clean the window today?no you.....................(mustn't/needn't/on't have/shouldn't 15,you have been traveling all day.you......................a walk now(could take/can't take/can take/my take GIÚP MIK VS CC ƠI!

Cho hình vẽ sau: Hỏi Ax có song song với Cy không ? Vì sao ?

cho 1.568 lít co2 qua dd chứa 3.2g NaOH . Hãy tính khối lượng muối tạo thành

Mọi người chỉ giúp em câu 10 với ạ

Nhập các hàm theo mẫu sau. Quan sát các kết quả và cho nhận xét: a) =MIN(1,2,3,4) b)=MIN((1,2,0,4) c)=MIN(1,2,,4) d)=MIN(1,2,a,4) e)=MAX(1,2,3,4) f)=MAX(-1,-2,,-4) g)=MAX(1,2,0,4) h)=MAX(1,2,b,4) Mấy bn, anh, chị giúp với đang cần gấp!

1, he............................leave early,didn't he ?(must/had to/has to/ought to) 2,his eyes were so bad that he..................read the number on the board(shouldn't/hadn't tp/couldn't/can't) 3,there is the waiter.i.........................ask him for the bill(will/shall/am able to/could) 4,.............open the door for you?(would you like that i/do you want that i/will i/shall i ) 5,...............you able to come to the meeting?i'm afraid not(can/will/may/should) 6,my car broke down so i................come by bus(had to/must/should/could) 7,.......................ask you some questions?-OK go ahead(shall i/will i/should i/may i) 8,there are a lot of mistakes in this exercise.i........................go over it again with you(will have to/am able to/would/could) 9,he was a good swimmer,so he......................swim to the river bank when the boat sank(could/can/would/was able to) 10,you...............go now.it's getting late(hard rather/had better/ought/would rather) 11,you........................fly to london this evening provided you don't mind changing planes in paris(must/have to/can.ought to) 12,you.............add it up.i'm not good at figures(have to/ought to/'d better/both a&c) 13,the phone has been ringing for a minute.noone................at home(must have been/can have been/should have been/none of these) 14,she's fainted.throw some water on her face and she................come round(has to/may/must/can have) 15,...................you please refrain from smoking while the lecture is in progress?(may/might/would/should) 16,do it as well as you....................(must/will/can/have to) 17,tom..............drive,he is too tired(would rather/must/needn't to/ought not to) 18,the sea was too rought that we...................swim(couldn't/can't/won't/wouldn't) MK CẦN GẤP CC GIÚP MIK VS !