【名词&注释】
文化遗产(cultural heritage)、公共服务设施(public service facilities)、城市总体规划(urban master planning)、老龄化社会(aging society)、人口负增长(negative population growth)、基本农田(basic farmland)、人口增长(population growth)、人行横道(crosswalk)、专项规划(special planning)、明确规定(clearly stipulated)
[单选题]人行横道(crosswalk)宽度的经验宽度值为( )m。
A. 4~5
B. 4~6
C. 4~10
D. 10