Anh chj làm gíp em bài này em.mới khó quá

Cân bằng hộ mình pt sau Fe+o2---> fexoy Hứa vote

1-10. Fill in the blanks with the correct forms of the verbs in brackets. Use the present simple, present continuous or present perfect. Mai: (you/ hear) (1) _______Answer of Nam taking part in the school singing contest? Quang: Really? When is the contest? Mai: It (take place) (2)________ Answer on this Sunday, May 21st. Quang: What time (it/ start) (3)______ Answer? Mai: It (start) (4)_______Answer at 2 p.m in the main hall of our school. Quang: Wonderful. I (never/ listen) (5)_______Answer to Nam singing. (you/ go) (6) Answer to see the contest? Mai: Of course. He (be) (7)________ Answer the only person in our class to participate in the contest. Let’s come to cheer for him. Quang: That (sound) (8)_______ Answer great! Mai: By the way, (you/ do) (9)_______ Answer anything this Sunday morning? We could buy some flowers to give Nam after the contest. Quang: Good idea. We can get the bus to Flower World. It (leave) (10)_______ Answer at 9:30 a.m. Mai: All right. See you at the bus stop. Bye. Quang: Bye bye. mấy anh hai à giúp em đi mấy anh hai

cho 4 g s cháy trong 2.24 lít o2 sau phản ứng s có cháy hết không? chất nào dư? tính lượng dư?

Lập dàn ý cho bài văn nghị luận để bày tỏ suy nghĩ của em về giây phút:"Ta nhận ra mình đang lớn khôn".

2. Cho tam giác ABC,AM là trung tuyến và có góc BAM= góc BCA. Chứng minh được: a. 𝐴𝐵²=2𝐵𝐶² b. 𝐴𝐵²=4𝐵𝐶² c. 𝐴𝐵²=2√𝐵𝐶² d. 𝐴𝐵²=$\frac{1}{2}$ 𝐵𝐶² 3. Chọn câu trả lời đúng nhất. Cho tam giác ABC vuông tại A, M trên cạnh AB.Vẽ MD⊥BC(D∈BC) MD cắt AC tại E. a. Chứng minh được rằng BM.BA=BD.BC b. Chứng minh được rằng EM.ED=EA.EC c. Cả a,b đều sai d. Cả a,b đều đúng 4. Cho tam giác ABC, AB=6cm,AC=9cm, ABDˆ=BCAˆ. AD=x.Tính x. a. 4 b. 5 c. 3 d. 2 5. Cho hình thang ABCD (AB//CD), AB=12,5cm,CD=28,5cm,DABˆ=DBCˆ. Vậy độ dài BD gần bằng số nào nhất: a. 17,5 b. 18,5 c. 19 d. 18 6. Chọn câu trả lời đúng.Nếu hai tam giác ABC và DEF có Aˆ=Dˆ,Cˆ=Eˆ thì: a. ΔBAC∼ΔDFE b. ΔABC∼ΔDFE c. ΔACB∼ΔDFE d. ΔABC∼ΔDEF

MN giải giúp e từ bài 11-bài 14 ah ,em cảm ơn nhìu ( vote 5* luôn)

practice combine each pair of sentences into one by using a suitable relative clauses 1. the frofessor is excellent i am talking his course 2. i saw a lot of people and horses they went to the market 3. i recently went back to paris i was born there nearly 50 years ago 4. do you know the music? it is being played on the radio 5. you didn't tell us the reason we have to cut down our daily expenses for that reason 6. the day was rainy she left on that day 7. this is mrs.jones her son won the championship last year 8. is this the style of hair? you wife wants to have it 9. she is the woman i told you about her 10. the building is the tallest one in town he works in that building 11. mr.brown is a nice teacher we studies with him last year 12. this is the place we visited this place last week 13. is that the computer? your father bought it last month 14. i've seen the little girl and her puppy they have lived next door for ages 15. the bed has no mattress i sleep on this bed 16. that is the reason he left her for this reason 17. the boy is very happy he won the race yesterday 18. mr. marks is unhappy about the plans for the new dam the stream flows across his farm 19. her father died last year she looked after him for over twenty year 20. the picture her famous she was looking at it

1. Mary started cooking for the party three hours ago. => Mary has ________. * 2 điểm 2. I last saw him when we graduated. => I haven’t _________ * 2 điểm 3. It is three weeks since Tom had his hair cut. => Tom hasn’t _________ * 2 điểm 4. She began to collect stamps in 2000. => She has __________ * 2 điểm 5. The last time Lucy wore this dress was a week ago. => Lucy hasn’t __________ * 2 điểm 6. Tom began to play the piano when he was a child. => Tom has __________ * 2 điểm 7. It is five years since Tim and Julie got married. => Tom and Julie have __________ * 2 điểm 8. It is two years since my friend lived in Hanoi. => My friend has ___________ * 2 điểm 9. This is the first time she has tasted Indian food. => She has ___________ * 2 điểm 10. It hasn’t rained heavily for a long time. => It is ________ * 2 điểm

Xác định phó từ và ý nghĩa của phó từ đó “Biển vẫn gào thét. Gió vẫn từng cơn đẩy nước dồn ứ lại rồi đột ngột dãn ra. Con tàu vẫn lặn hụp như con cá kình giữa muôn nghìn lớp sóng.Thuyền trưởng Thắng vẫn điềm tĩnh chỉ huy đoàn tàu vượt cơn lốc dữ"