John, ____ handwriting was very beautiful, was going to the contest, too. [ ]

A. of who

B. of which

C. who's

D. whose

出境集装箱报检范围包括：( )

A．有出境集装箱应实施卫生检疫

B．装载动植物、动植物产品和其他检验检疫物的集装箱

C．装运出口易腐烂变质食品、冷冻品的集装箱应实施适载检验

D．输入国要求实施检疫的