1.若集合A={x|x>0},B={x||x|≤2,则A∩B=A.(-22)B(0,2]C.[-2,2]D.[0,2]2.已知p:Vx∈(0,+∞),x-log:x≥0,则ptA.Vx∈(0,+∞),x-log:x<0B.x∈(0,+∞),x-log:x≤0C.3x∈(-∞,0],x-log:x≤0D.3x∈(,+∞),x-log2x<03.已知cosa=13∠a<2n,则sin(2-a)=2A.一B.2m-1D√24.已知平面向量a=(1,m),b=(0,2),若b⊥(3a-mb),则实数m=A.-1B.00.1