题目

选做二露西和莉莉是一对双胞胎姐妹。请根据下图，写一篇介绍她们的短文。内容可适当发挥，80词左右，开头已给出，不计入总词数。 答案：【答案】Lucy and Lily are twin sisters. In some ways,they look the same,but they are different in other ways. Lucy is as tall as Lily,but she has longer hair than Lily. Lily is more outgoing than Lucy. They both like sports very much,but Lily is much more athletic than Lucy. They play basketball and volleyball and enjoy watching sports on TV. Both sisters like study,and get good grades. But Lu关于重力，下列说法不正确的是（　　）A．重力就是地球对物体的吸引力，重力的方向总是和支持面垂直B．用弹簧测力计或天平都可以直接测出重力的大小C．重力的大小与运动状态无关，自由落体运动的物体仍然有重力D．弹簧测力计测物体的拉力就等于物体的重力