Danny:I'm hungry. ____!There is a restaurant.
Jenny: ____. I am not hungry. I don't want to eat.
Danny:Go with me,please!
Jenny:Okay!
Danny:I'm excited.
Jenny:Danny,please don't ____!Don't ____! Don't ____!
Danny:Okay!Okay!I walk.
一号卫星和二号卫星分别绕地球做匀速圆周运动,它们的质量之比为1:3,它们的轨道半径之比为1:4,则: