郭老师是高校体育教员,长得身高体壮的,人称“大老郭”。大老郭打得一手好篮球,是校老年篮球队的绝对主力,经常活跃于篮球场上。然而最近一个时期,大老郭在球场上老感到力不从心,有时还头昏眼花。他想:这是怎么啦?难道是自己真的老了?也不致于这么快啊?这么棒的身体,平时连感冒都很少得。且不去管它吧,也许过一阵子就会好了。然而,一个月后大老郭的头 Teacher Guo is a physical education teacher in colleges and universities. He is tall and strong, and he is known as “Dao Guo.” Da Lao Guo played a good basketball, is the absolute main force of the school’s senior basketball team, and is often active on the basketball court. However, in the most recent period, Dao Guo felt uncomfortable on the court and was sometimes dizzy. He thought: What’s the matter? Is it really old? Not so fast? Such a great body, usually even a cold is rare. And ignore it, maybe it will be better after a while. However, one month later, Dao Guo’s head