—Do you like chicken?—No, I don't like it .
A:at all
B:a lot
C:very much
(Ⅰ)求异面直线D1E与A1D所成的角;
(Ⅱ)若二面角D1﹣EC﹣D的大小为45°,求点B到平面D1EC的距离.
物质的性质决定用途。下列有关说法正确的是( )