A:you made
B:made you
C:did you make
D:you did make
如图,直线l1和直线l2被直线l所截,已知l1∥l2,∠1=70°,则∠2=( )
设A,B是非空集合,定义A×B={x|x∈(A∪B)且x∉(A∩B)}.已知A={x|0≤x≤2},B={y|y≥0},则A×B=____