10.已知集合U={1U=\{1U={1,2,3,4,5,6,7}7\}7},A={2A=\{2A={2,3,6,7}7\}7},B={2B=\{2B={2,3,4,5}5\}5},则A⋂(∁UB)=(A\bigcap (\complement _{U}B)=(A⋂(∁UB)=( )))