14. I travel to the Binhai New Area by light railway every day, _____ do many businessmen who live in downtown Tianjin.
(A) as
(B) which
(C) when
(D) though

考查定语从句。as引导定语从句代替前面所说的情况，且有正如正像的意思。which虽然也可以引导定语从句代替前面的情况但没有正如正像的意思，所以应选A。