It is a little after eightin the morning and Jenny and Mary are in the taxi going to the airport．There is a lot of traffic at thishour, and the taxi is not moving very fast．This is rush hour．There are hundreds of automobilesmoving in different directions, and there are many buses, trucks, and taxis．Also, there are a lot of peoplewalking on the sidewalks and crossing streets．Everybody is going to work.“Rushhour” means ________.
A.the time when people are runningB.the time when crowds of people aretraveling to or from work in a large townC.the time when everybody runsquicklyD.the hour when people have to go tothe same place在线课程B