Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown.

A．lived

B．has lived

C．had lived

D．was living

场(厂)址比较的内容不包括( )。

A．经营费用比选

B．产出物方案比选

C．安全条件比选

D．环境影响比较