已知菱形的周长为52，一条对角线长为10，则边长是（ ），它的面积是（ ）。
13；120
As he was about to go out to search for Mary, she happened ____.
A．to coming in
B．to come in
C．came in
D．to have come in
( )是《担保法》规定的担保形式之一。
A．质押B．抵押C．物押D．约定
