题目

根据短文内容完成下列任务。 Hello，boys and girls.Today is Thursday.I'm very happy(A)I have art today.My art teacher is a twenty-year-old girl.She's from Shanghai.Her name is Yang Lei.She's friendly to us.(B)We all call her“Xiao Yang”.“Xiao Yang” likes sports.Every morning she gets up very early. She usually runs(C)an hour.Every afternoon she plays basketball with us for two hours.(D)她最喜爱的体育明星是姚明。Oh，my favorite sports player is Kobe.I think he is the best basketball player in the world.Oh，I forget to tell you.My name is Gao Lei.I'm a Chinese b在三条线段a，b，c中，a的一半等于b的四分之一长，也等于c的六分之一长，那么这三条线段的和与b的比等于A.1：6B.6：1C.1：3D.3：1