题目

如图所示，甲、乙两个质量相等的均匀实心正方体放在水平地面上，已知铜的密度大于铁的密度，可能使甲和乙对地面的压强相等的方法是（ ） A．将质量相等的铜块和铁块分别放在甲、乙的上面 B．将体积相等的铜块和铁块分别放在甲、乙的上面 C．沿水平方向分别截去质量相等的部分 D．沿水平方向分别截去体积相等的部分阅读理解。     This is Kate Smith. She is 13 years old. She lives in Guangzhou. She studies in No.10 Middle school. Her parents work there. They are both English teachers. They are form the UK. She likes eating junk food. She doesn't like playing sports. She has one healthy habit: She sleeps for 9 hours every night.      Kate Smith has a brother. His name is Jack Smith. He is 11 years old. He doesn't eat junk food. He likes playing sports. He often runs, plays basketball, and goes swimming. He eats fruit every day.He likes eating vegetables. But he has an unhealthy habit: He sleeps for 6 hours every night. 1. How old is Kate Smith?______________________________________________________________________________ 2. Where does Kate live? ______________________________________________________________________________ 3. What does Kate like eating? ______________________________________________________________________________ 4. What does Jack eat every day? ______________________________________________________________________________ 5. How many hours does Jack sleep every night?______________________________________________________________________________