题目

Texting（发短信）walkers aren't just an annoyance to other walkers, Australian researchers armed with movie special-effects technology have determined scientifically that they're threats to themselves. Using motion-capture technology similar to that used for films, researchers concluded that texting while walking not only affects balance but also the ability to walk in straight line. “Some people like checking emails while walking to work in the morning” said the study co-author Hoorn, “but they may not know it has a serious effect on the safety of themselves”. Other facts一个三位数除以l有余数，余数最她是（　　）A．8B．7C．6