Câu trả lời ok bạn nhé

viết tắt cho từ tôi cái gì đó so vs obj 1 nhé bạn

ex:My friend sings better than me

thay thế me = mine cũng đc

I think it is a right idea when science and technology is developing more and more people will start applying advanced teaching support technology to help manage and facilitate teaching more.

1-c

2-a

3-a

4-b

5-a

Good luck!

Câu hỏi của bạn vừa mới hỏi mình trả lời rồi đấy!

Đúng nhé bạn!

+ Dây tóc bóng đèn tự nó phát ta ánh sáng còn mảnh giấy trắng hắt lại ánh sáng do vật khác chiếu vào nó

+ Vậy dây tóc bóng đèn gọi là nguồn sáng. Dây tóc bóng đèn và mảnh giấy trắng gọi chung là vật sáng.

a) Xét hình thang ABCD(AB//CD) có

E là trung điểm của AD(Gt)

F là trung điểm của BC(Gt)

Do đó: EF là đường trung bình của hình thang ABCD(Định nghĩa đường trung bình của hình thang)

Suy ra: EF//AB//DC và EF=AB+DC2EF=AB+DC2(Định lí 4 về đường trung bình của hình thang)

mà AB⊥⊥AD(gt)

nên EF⊥⊥AD

Xét ΔFEA vuông tại E và ΔFED vuông tại E có 

FE chung

EA=ED(E là trung điểm của AD)

Do đó: ΔFEA=ΔFED(hai cạnh góc vuông)

Suy ra: FA=FD(Hai cạnh tương ứng)

Xét ΔFAD có FA=FD(cmt)

nên ΔFAD cân tại F(Định nghĩa tam giác cân)

b) Ta có: ˆBAF+ˆDAF=90đ                                    

ˆCDF+ˆADF=90đ                                                  

mà ˆDAF=ˆADF(ΔFAD cân tại F)

nên ˆBAF=ˆCDF

Jack London real name is John Griffith London, born in 1876 and died in 1916 in San Francisco is the author of world famous works such as Iron Heel, Martin Eden, White Fang,... and my favorite book and would like to introduce the title "Call of the Wild" - a work that made the world chant even when it was first published in 1903.

The novel is the result of the author's trip to Klondike to find gold. The content of the novel revolves around the main character is a dog named Buck - a dog who has been through too much misfortune. Buck was originally from a well-to-do family, "he is the king of all creatures that crawl and drag and fly, including humans, on Judge Miller's ranch". And Buck is pushed out of society, Buck is kidnapped and taken to Alaska in the Arctic to pull sleds for gold seekers, the pride of a proud man has been smashed with each baton and From here, its survival instinct is aroused. Buck is like a commodity that is freely transferred from person to person, having to go through cruel and cruel owners, exploited in blizzards of labor with meager portions.Finally, Buck meets John Thornton, an owner with an extremely beautiful and kind personality and Buck quickly integrates here. For the first time, he felt what true love was, rather than the responsibility to protect the children of the former Judge Miller. Buck's life is peaceful and good, when the cruel reality happens to the owner he loves the most: John Thornton. Its owner was killed by the Yeehats after a hunt with its other dogs. Now that Buck's love and loyalty had turned into despair and anguish, he could only rush to tear the remaining remnants. Since then, it abandoned humans, becoming a wild dog following the call from the primitive.                                                          

                                                     Cuốn sách Tiếng gọi nơi hoang dã-Cao The Anh

1. Where is the fuel set on fire?

=> The fuel is set on fire inside the rocket

2. How do the gases come out to make the rocket be pushed up?

=> They come out so fast and with so much power that the rocket is pushed up

3. What does the force of gravity try to do?

=> The force of gravity tries to keep everything on the ground.

4. What does an airplane use to help it fly?

=> It just uses the power and force created by the burning fuel to make enough

Good luck.