把高4m的发光棒立于焦距为5cm的凸透镜前,在凸透镜后的光屏上成2cm高的像,物体离凸透镜的距离可能是A. 7.5cm B. 12.5cm C. 4.5cm D. 10cm 答案:【答案】A【解析】根据题干条件,此时所成的像是倒立放大的实像,所以满足:5cm=f<u<2f=10cm,处于这一物距范围内的只有A、7.5cm.故选A.
My mother likes playing volleyball and she
__________ likes practicing yoga.
A.never
B.often
C.also
D.Too