Có hiện tượng gì xảy ra với một thanh thép khi đặt nó vào trong lòng một ống dây có dòng điện một chiều chạy qua?

BT câu tường thuật pha trộn negative và positive

1, I often have a big hamburger => Benjamin says

2, If I were you, I’d stop talking tranquilizers. They won’t be good for you health in the long run => I said

3, Frank: How much pocket money Does Lisa get?

4, Don’t touch that wire, will you => Said the mother

5, Patricia: My mother will celebrate her birthday next weekend

6, I’m sorry I’m late => He said

7, Shall I do the cleaning up for you? => He said

8, If I were you, I would buy that book => she said

9, Why don’t we go to the cinema tonight? => He said

10, Would you like to come to my birthday party next Saturday? => She said