A survey done recently shows that not all parents________their children taking part in the weekend classes.
A:escape
B:lead to
C:imagine
D:approve of
图是一组世界区域地图,根据所学知识回答题。
体积为100cm3的冰熔化成水后,下列说法正确的是(ρ冰=0.9×103Kg/m3)( )