题目

请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。 Even though Danish students have equal access to education, their choice of studies is still influenced by social class. Young people from working class backgrounds are   36  by studies with a clear job profile and high income,   37  prestige and studies with a strong identity interest young people of parents with university degrees when choosing which studies to   38  . This is what researchers from the University of Copenhagen   39  in a new study. Students 一名同学家到学校的距离是1800m，一天早上他骑车从家出发以5m/s的速度向学校驶去，当行驶到了1000m后，自行车突然扎带坏了，为了不迟到，他锁上自行车立刻向学校走去，速度是1.5m/s，则他从家到学校的平均速度是           m/s．