Mickey mouse is one of the most famous ______ in American ______.
A:symbol culture
B:symbol cultures
C:symbols culture
D:symbols cultures
知圆柱的底面半径为2,高为3,用一个平面去截,若所截得的截面为椭圆,则椭圆的离心率的取值范围为( )
I often lose things when I am in ______ hurry.
下列不属于中国民族资本主义发展产生的影响是