A Mission to Mars Have you ever had a dream about traveling to another planet in our solar system? If you have, there is an actual programme that is happening right now, and it hopes to send people to Mars in 2023. Known as the Mars One Mission, it will send a crew of four people on a one-way mission to colonize Mars. Those chosen people will have to be ready to say good-bye to the earth forever, as there will not be a return trip. For the people chosen, they will have to learn to do many different things. First of all, they will be living the rest of their lives with just a handful of other people, so they all must have personalities that allow them to get along. Second, the living quarters that they will have won’t be very spacious, so they will have to deal with that condition as well. If they feel homesick, they will only be able to communicate with people back on the earth via e-mail and videos and audio sent back and forth. However, there won’t be any real-time communication. Even at the speed of light, communication between the earth and Mars takes about 20 minutes. Whether the Mars One Mission will actually happen is the big question that a lot of people are asking. There is an enormous skepticism in the science community, and Wired magazine gave the mission a miserable score of two out of ten on its probability scale. However, for those who dream to go to Mars, at least they can say there is a possibility that it could happen.

Khái niệm về : Hóa học là gì ? và Vật lí là gì ? Vật lí và Hóa học khác như thế nào ? ( Cho ví dụ 1 Hóa Học và 1 ví dụ Vật lí ?

Hãy tìm xem khi nào thì: a^m.a^n=(a^m)^n

Vẽ cali : hihi sắp đc id hok rùi Vui quá mn ơi ^-^❤❤❤ Nhớ trường quá (Ai vô bl hông)

Giúp mik vs mọi người nhanh ạ Em cảm ơn

Giúp em vs ạaaaaaaaaaaaaaaaaaaaa

f (x -1 ) = (x-1) (x-1+1)(x-1+2)

Cứ 10 người thì đào được 35 m mương. Thêm 20 người nữa ra thì đào được ? mét mương ( biết mức làm của mỗi người như nhau )

Complete the conversation between Nick and Mai about British table manners with the sentences given (A-J). Practice the conversation with your partners. A. If you are a guest, it is polite to wait until your host starts eating or indicates you should do so. It shows consideration. B. When you have finished eating, and to let others know that you have, place your knife and fork together, with the prongs on the fork facing upwards, on your plate. C. Yeah, of course, Mai. First, we are expected to eat properly with cutlery, especially fork and knife. D. Right. Hold your knife with the handle in your palm and your fork in the other hand with the prongs pointing downwards. E. You may eat chicken and pizza with your fingers if you are at a barbecue; otherwise, always use a knife and fork. F. If you have a knife in one hand, it is wrong to have a fork in the other with the prongs pointed up. G. Yes, they are sandwiches, crisps, and fruit. H. Well, the fork is held in the left hand and the knife in the right. I. Always say thank you when you arc served something at a party. And in a restaurant, it is normal to pay for your food by putting your money on the plate which the bill comes. J. Of course not. Rest the fork and knife on the plate between mouthfuls, or for a break for conversation. Mai: Can you tell me a little bit about English table manners, Nick? Nick: (1) ____________________________________________________________ Mai: How can we use the fork and the knife in the correct way? Nick: (2) ____________________________________________________________ Mai: l see. But is there anything that we should not do? Nick: (3) ____________________________________________________________ Mai: Our teacher has already mentioned it in the English lesson. Nick: (4) ____________________________________________________________ Mai: Do we hold the knife and the fork all the time? Nick: (5) ____________________________________________________________ Mai: Are there any foods that you don't eat with a knife, fork or spoon? Nick: (6) ____________________________________________________________ Mai: And is there any that we eat with our fingers, Nick? Nick: (7) ____________________________________________________________ Mai: If we are invited to a party, when should we start eating? Nick: (8) ____________________________________________________________ Mai: How can we show that we finish eating? Nick: (9) ____________________________________________________________ Mai: Anything else? For example, say “thank you” or pay the bill? Nick: (10) ____________________________________________________________ Mai: Thank you so much. I think all of us should have good table manners at anywhere, in England or in Viet Nam. Nick: You're welcome, Mai. Mong mọi ng giúp

cho mình hỏi tại sao scd lại là hình chiếu của tam giác sbc xuống mp sac v ạ , tính chất gì thế ạ ?