∵aa+b=25，
∴a+ba=52，
∴ba=32，
∴a：b=2：3．
— What do you think of earthquake, Zhang Hong?
— Terrible. people lost their hometown during the earthquake.
A．Five thousands
B．Thousand of
C．Three thousands of
D．Thousands of
玻璃：钢铁（）
A．石头：鸡蛋
B．生铁：金
C．铝：铜片
D．丝绸：陶瓷
