City Park is not far away from here. It's only ten m____ walk. You can't miss it.
请根据图所示楼房顶上的旗帜和两船上旗帜的飘扬情况,判断出甲、乙两船的运动情况( )
生活中的洗涤问题大都与化学知识有关。下列有关说法不正确的是:( )