môt cây cờ cao 2,5cm đc cắm ở sát bờ sông Hỏi ảnh của đỉnh cây cờ cách mặt nước là bao nhiêu , biết bờ cao hơn mặt nước 0,5cm

Giúp e bài này với ạ, e cảm ơn ạ

XII. Write the correct tense or form of the verbs in brackets. 1. He _____________(receive) £300 when his uncle died. 2. The day we heard the news we _____________(have) holidays with our family. 3. Why ________________(you/ not answer) my phone call last night? ~ Oh, sorry,I _____________(take) a shower at that time. 4. She _____________(not see) her father since he _____________(start) to work inMarseille two years ago. 5. My mother ____________(fly) home from London today. Her flight _____________(arrive) in an hour. 6. We decided not to go because it _____________(rain) very hard. 7. When I ________(be) a child, my mother __________(read) me bedtime stories every night. 8. ________________(you/ ever/ hear) a Vietnamese folktale before? 9. The hare believed he would win the race, so he stopped _____________(take) a nap. 10. Once upon a time, there was a rich man _____________(live) in a village. XIII. Supply the correct form of the words in brackets. 1. Is The False Grandmother one of the ____________ versions of Little Red Riding Hood? (origin) 2. The king wanted to repay his servant’s ____________ in another way. (loyal) 3. The fox ____________ stole the egg by distracting the mother with a rock. (cunning) 4. The first thing that saved All Baba was his lack of ____________. (greedy) 5. Saint George is one of the most ____________ heroes in the western world. (legend) 6. The stepfather was a wicked man and treated his stepson very ____________. (cruelty) 7. Giving gifts to servants is an example of King’s ____________. (generous) 8. Princess Elsa ____________ magic that allows her to control and create ice and snow. (possession) 9. ____________, his parents passed away when he was 12 years old. (fortune) 10. The princess was so ____________ that she lost her ability to speak. (fright)

Hoàn thành chuỗi phản ứng hóa học sau và ghi rõ điều kiện (nếu có) S → SO2 → SO3 → H2SO4 → SO2 → H2SO3 → Na2SO3 → SO2

Bài 7:chứng minh 5^6-10^4 chia hết cho 54

chiều nay mình nộp roi gấp lắm ạ

I. Choose the best answer to complete the following sentences. (0.2 x 10 = 2.0pts) 1. The children won’t go to sleep……………..we leave a light on outside their bedroom. A. except B. otherwise C. unless D. but 2. I hope you don’t mind me………………so late at night. A. telephoning B. to telephone C. telephone D. to have telephoned 3. The bus ………………from my house to school is 10,000 dong. A. cost B. fare C. payment D. charge 4. Let’s go out now,……………….? The weather is so nice! A. won’t you B. shan’t we C. will you D. shall we 5. I read an interesting…………………in the paper the other day. A. article B. information C. news D. reporting 6. If I had more time, I would…………………….golf as a hobby. A. take to B. take on C. take over D. take-up 7. We must make……………our minds about where to go out for our picnic. A. out B. up C. off D. on 8. A ________ is being offered for information leading to the arrest of the bank robber. A. prize B. reward C. notice D. repayment 9. Who was the first American person ________ on the moon? A. walking B. who walked C. walked D. to walk 10. Neither the students nor the teacher ________ come. A. has B have C. is D. are

cho góc xoy.trên tia ox lấy hai điểm a và b trên tia oy lấy điểm c bà d sao cho oa=oc;ab=cd.chứng minh a)BC=AD b)Gọi I là giao điểm của BC và AD.Chứng minh tam giác AIB= tam giác CID c)OI là giác của góc xOy d)OI vuông góc với BD

em không biết làm câu này nhờ mọi người giải giúp em

giúp em 1 trong 2 câu này hoặc cả hai thì càng tốt ạ . Em cảm ơn