题目

Monthly Talks at London Canal Museum Our monthly talks start at 19:30 on the first Thursday of each month except August. Admission is at normal charges and you don’t need to book. They end around 21:00. November 7th The Canal Pioneers, by Chris Lewis. James Brindley is recognized as one of the leading early canal engineers. He was also a major player in training others in the art of nanal planning and building. Chris Lewis will explain how Brindley made such a positive contribution to the education of that group of early “civil enginerrs”. December 5th Ice for the Metropolis, by如图，AB是半圆O的直径，点P从点O出发，沿OA--BO的路径运动一周．设OP为s，运动时间为t，则下列图形能大致地刻画s与t之间关系的是（ ）A．B．C．D．