A clean environment can help the city bid for the Olympics, which ____ will promote its economic development.

A．in nature

B．in return

C．in turn

D．in fact

产品线即是银行的业务部门，在标准法中，银行的产品线分为8个：公司金融、交易和销售、零售银行业务、商业银行业务、支付和清算、代理服务、资产管理和零售经纪。 ( )