题目

阅读下面材料，在空白处填入1个适当单词或括号内单词的正确形式。Bike-to-Work Day is held across the North America every year on the third Friday of May. It 【1】 (start) by the League of American Bicyclists in 1956. 【2】 (it) aim is to promote the bicycle as a serious choice of getting to and from work. In today's world where global warming is a serious issue, the bicycle is a perfect way of reducing our carbon footprint. Cycling to work is a 【3】 （health） alternative（替代）to driving or taking public transport.A society of high quality means there i城市活动在空间上高度集取，并具有水平和垂直方向上的分异。读图，回答下题。图中①②③④所示城市空间最合理的作用方式分别为A、电影院、厂房、住宅、银行B、零售店、电影院、石房、办公室C、办公室、零售店、住宅、厂房D、批发市场、办公室、住宅、零售店