() is 200 km from here to the natural park

问题描述:

() is 200 km from here to the natural park
A There B it C this D the place

选B,it作形式主语,真正的主语应该是后面的介词短语,还原一下句子:From here to the natural park is 200 km.为了避免头重脚轻现象,用it作形式主语.