初温和质量相同的铜和铅,它们的比热容之比是3:1 ,它们吸收热量之比是2:3,则铜升高的温度与铅升高的温度之比是
How much do you weigh?___________________________ A.I weigh 33 kilograms. B.I’m ten years old.
What can you do?______________________ A. I like football. B. I can jump high!
___________________? No,she didn’t. A. Did Ann win the race? B. Do Ann win the race?
Are you ready?_________________________ A. Yes,I am. B.Ready.
___________________? We are astronauts. A. What are these ? B. What do you do ?