(a+5)+b=a+(____+____)
—Thank you for picking me up in this remote area!
—________.I'm just going in the same direction.
已知过点A(-2,m)和B(m,4)的直线与直线2x+y-1=0平行,则m的值为( )
中国地理疆域特征明显:疆域外延为大海和高山、戈壁、沙漠等诸地理因素,北面是寒冷的西伯利亚,西北是难以逾越的戈壁沙漠,西南是险峻神秘的青藏高原,东部是最为浩瀚无际的太平洋。这种地理环境对中华文明的直接影响是
We'll have a holiday next month.