企业开拓一个新顾客需要花费的时间和力量， 约为保留住一位老客户所花力气的（）
A、2倍C
暂无解析
Thegirlwasluckyenoughto_______thebadmenandranaway.
WehavenoticedtheDutchproducers______ajointventureagreementwithChinesefirms.
Inourculture,weareaccustomedtosophisticatedprescriptiondrugscontaininga_____ofchemicalingredients
Byjointeffortswecan___bothfriendshipandbusiness.()
Wewillconsider______yourtermsofpayment.
