神舟十号运载火箭全长58m。分别从视频中截取火箭发射前和发射后第10s的位置图像,如图所示。则火箭发射后10s内的平均速度最接近于( )
A:5m/s
B:9m/s
C:12m/s
D:15m/s
—Why did you vote for Maggie?—Because she is very ________. She always shares things with others.
中国传统思想文化,是中华民族传统文化的核心内容。( )