题目

A cartoon series on Confucius was aired on TV, _____ the thinker was a 10-year-old boy, not an old man.    A. from which      B. in which     C. from it     D. in it   答案：B甲乙两港相距306千米，一艘货船从甲向乙行驶1.5小时后，一艘客船从乙向甲行驶，货船每小时行42千米，客船每小时行39千米，客船行驶几小时后两船相遇？（先用算术法，再用方程法）