______ the serious sandstorms that have hit the city recently, the quality of the air in Beijing is very poor. [ ]

A. Apart from

B. Due to

C. Instead of

D. Thanks to

下列金融工具中，()是指以利率或利率的载体为基础工具的金融衍生工具。

A．股权衍生工具

B．货币衍生工具

C．利率衍生工具

D．汇率衍生工具