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1 tháng 2 2019
chỉ cần bạn bao bọc cẩn thận,tránh nước,tránh nơi k được sạch sẽ,sau khi đọc phải xếp ,cất ở nơi đựng sách thật gọn gàng và ngăn nắp,tránh xa tầm tay của các em nhỏ vì có thể chúng k biết và sẽ làm hỏng cuốn sách,.....
8 tháng 3 2023
- Chất có liên kết đơn: tất cả các chất trên
- Chất có liên kết đôi: C2H4, CH2=CH-CH3.
- Chất có liên kết ba: C2H2, \(CH\equiv C-CH_3\)
S
15 tháng 6 2021
1. teacher
2. desk
3. ruler
4. pen
5. rubber
6. student
7. pencil case
8. calculator
9. book
10.chair
8 tháng 3 2023
PT: \(C_2H_4+Br_2\rightarrow C_2H_4Br_2\)
\(C_2H_2+2Br_2\rightarrow C_2H_2Br_4\)
\(CH\equiv C-CH_3+2Br_2\rightarrow CHBr_2-CBr_2-CH_3\)
\(CH_2=CH-CH_3+Br_2\rightarrow CH_2Br-CHBr-CH_3\)
HV
2 tháng 12 2021
1. How do you do ? – Not bad,_about you.
2. Would you prefer playing soccer or ch_ ess_ _?
3. How _ _ often_ _ _ do you visit your grandfather? Once a week, maybe.
4. _ _ _Where _ _ is this beautiful garden? I want to take pictures it– It’s my friend, David.
5. Hello, Let me _ _ _ introduce_ _ _ _ _ _ myself, I’m Mai. I’m from Hanoi., Vietnam. Glad to meet you!
6. What does she _ _ look_ _ like? She's short and slim, blonde with green eyes.
7. How _ _ _ much_ are this T-shirt and trousers? – Total is 50 dollars
8. I usually go home at half _ past_ _ _ eight because I need to buy some food for my grandmother.
9. Who are you going w _ith _ _? Ms. Thanh, I saw you last night.
10. How many people are _ _ there_ _ _ in the world? About 7.3 billion.
TT
5 tháng 1 2017
where does nnancy sometimes go on saturday evening?
children
How far is it from your house to quyen coi primary school?
tk mk nhé
5 tháng 1 2017
Where does Nancy sometimws go on Saturday evening?
The Children Day is celebrate on the first of June.
How far is it from your house to Quyng Coi Primary School?
K mik mik k lại! Mik giỏi anh lắm , có câu khó cứ nói mik nha!
B3
10 tháng 2 2019
I have three good friends: Minh, Mai and Nga.(1).... sports.Minh s soccer and tennis.Mai s badminton(2).....Nga s aerobics. They all (3).....soccer matches on television. Minh often plays soccer(4)...the after with his classmates.Mai plays badminton (5)...a week and Nga does(6)...on Thursday ang Sunday
1.A.He B.she C.THEY D.MY FRIEND
2A.AND B.WHEN C.THEN D.NEXT
3.A.WATCH B.WATCHING C.ARE WATCHING D.WATCHES
4.A.AT B.OF C.ON D.IN
5.A.ONE B.TWICE C.TWO D.FIRST
6.A.GAMES B.VOLLEYBALL C.AEROBICS D.TENNIS
B3
10 tháng 2 2019
1. He got down to writing the letter as soon as he returned
=> No sooner had he returned from his walk than he got down to writing the letter.
2. She just had time to put up her umbrella before the rain came down in torrents
=> No sooner had she put up her umbrella than the rain came down in torrents.
3. The only way to eliminate world terrorism is by united opposition.
=> Only by united opposition can the world terrorism be eliminated.
4. The workers only called off the strike after a new pay offer.
=> Not until a new pay was offered did the workers call off the strike.
5. You are the best friend I can find in this world.
=> Nowhere in this world can I find a friend as good as you.
6. There was no precedent for the King's resignation.
=> .Never before had any King resigned.
7. I write to him almost everyday.
=> Hardly does a day go by without my writing to him.
8. Children can learn a lot about how to behave in a situation this.
=> Only in a situation this can children learn a lot about how to behave
9. You will find so many happy people nowhere else.
=> Nowhere else will you find so many happy people.
10. It's seldom wise to disregard the advice that he gives.
=> Seldom is it wise to disregard the advice that he gives
11. They have invited us to their home not once.
=> Not once have they invited us to their home.
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