A:once gained
B:while gaining
C:if gai
D:after gained
下列物体的形状类似于球的是( )
Houses in China's big cities are so unreasonably expensive that generally young couples can't afford _______ without their parents' financial support.
大脑主要是由____组织构成,运动离不开____组织的收缩和舒张.
某商场销售一批电视机,一月份每台毛利润是售出价的20%(毛利润=售出价-买入价),二月份该商场将每台售出价调低10%(买入价不变),结果销售台数比一月份增加120%,那么二月份的毛利润总额与一月份毛利润总额的比是____ .