Ai giúp mình trả lời câu 3 phần 1 với, thanks

giúp tui với nhá , cảm ơn nhiều 🥰

Câu 1: Một bình chia độ đang chứa 100ml nước, thả một hòn đá thì mực nước dâng lên 150ml, tiếp tục thả 2 quả cân thì nước trong bình dâng lên đến 210ml. Hãy tính: a) Thể tích hòn đá? b) Thế tích một quả cân?

So sánh thái độ của triều đình chống Pháp ở chiến sự Đà Nẵng và Gia Định.

Find out one mistake in each sentence and correct it 1.There is a few water in the glass. 2.There is a few books on the shelf. 3.They often go swim in the summer. 4.Mai and Nam don't go to school in Sunday. 5.Mr.Linh usually have dinner at seven o'clock in the evening. 6.We didn't wanted to go to the park. 7.I can't speak Chinese and neither can't my brother. 8.when I saw her, I thought she looked happily. 9.Her dress was pink and little white flowers in it. 10.My mother bought for me nice schoolbag on the occasion of a new school year.

Ai giải hộ mình bài toán này với cảm ơn

GIÚP MK VỚI Ạ MK ĐANG CẦN GẤP 1.How many times……….at the fast-food restaurant? A.are you eating B.do you eat C.have you eaten D.were you eating 2.They……there since the president’s presence. A.are B.were B.will be D.have been 3.I……. your book yet. A. didn’t receive B.haven’t received C.will not receive D.don’t receive 4. He is the moat intelligent man that I………….. . A.met B.will be met B.have ever met D.am metting 5. I …….by air before. A. haven’t travelled B.didn’t travel C.don’t travel D.travel 6. I ……..a letter when she……….at me. A. haven’t written-glanced B.wrote-glanced C.was writing-glanced D.wrote-have glanced 7. ……….a greatv deal of trouble with your computer last night? A.Did you have B.Have you had C.Are you having D.Do you have 8.We……….from her for ages. A. won’t hear B.haven’t heard C.don’t hear D.didn’t hear 9. I ………..to him since I ………here. A.spoke-have been B.spoke-was C.haven’t spoken-was D.haven’t spoken-am 10. I ……..any letters from him recently.I last ……him five years ago. A. haven’t received-met B.haven’t received-have met C.don’t receive-have met D.have received-have met 11. ………there yet? Yes, I ……. there since I ……..a little boy. A. Have you gone-have gone-was B. Have you gone-went -was C.Did you go-went-was D.Have you gone-have gone-have been 12.Up to now, we ……reading the second chapter of the book. A. finished B.have finished C.will finish D.finishes 13.So far he …… the book. A.has written B.does write C.won’t write D.will write 14.Thomas’s speech ………. so wonderful that we all……attention to his performance. A.was-paid B.has been-paid C.is-will pay D.has been-have paid 15. A lot of people ……….. to the big city to find job lately. A. have come B.came C. will come D.are coming 16.This is the first time I………. such a busy city. A. have visited B.visited C. visit D. am visiting 17. What ………now? She …………to her friend. A.is Lan doing-is talking B.doeas Lan do-talks C. is Lan doing-talked D.has Lan done-has talked 18. He …….in Hue but he …………and ………in Da Nang now. A. born-lives-works B. bear-lives-works C.was born-lives-is working D.was born-lives-works 19. I …….. Mrs Anh Tho on TV several times.She …….. a famous singer. A. met-is B.have met-have been C.have met-is D.met -was 20.The girl………. something now.She…….here since 8 a.m. A.is writing-was B.is writing-has been C.has written-has been D.wtites-have been

giúp tui vẽ hình: Cho ba tia chung gốc Oa;Ob;Oc thỏa mãn góc aOb= 70 độ ;góc aOc = 30 độ ; góc cOb=40 độ

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