Jumping out of ______ airplane at ten thousand feet is quite ______ exciting experience.
①把图A按2:1的比放大. 2、把图B绕O点顺时针旋转90°.
②把图C向左平移5格,再向上平移6格.
③画出图D的另一半,使它成为一个轴对称图形.
—_______ is your new bike, Xiaohua?
—It is 580 yuan.
读地球公转示意图,回答下列问题.