你遇到过一个双目失明的老师吗？你能想象出这样的一位老师的课堂会是什么样吗？读一读下面的这篇文章，了解一位这样的老师吧。 it is time for algebra ⅱ at newton north high school，and david ticchi asks one of his students to take attendance for him. “here's my clipboard ( 带夹子的写字板)，heather，”the teacher says，handing his roster to a male student in the front row. but the real heather pipes up(用尖锐的声音说) from another spot in the room：“i moved.i'm in the third row.”
