Last Sunday morning when I got up, to me great surprise,  1.___________

I found that we had a big snowfall. I was very excited because      2.___________

it was a long time that I had ever seen such a heavy snowfall.       3.___________

So I decided to call my friends to go out to play snow together.     4.___________

We made up some snowmen and rolled some snowballs             5.___________

and we enjoyed the fun of playing fighting games. Just then             6.___________

we noticed that the buses and cars move very slowly              7.___________

because the heavy snow. So we went to clean the snow so as to     8.___________

help the traffic go safely. After the all morning’s hard work,             9.___________

we cleaned the snows on the road, and we went home happily.     10.___________

粪便隐血试验持续阳性常见于（）

A.溃疡病

B.胃癌

C.食动物血

D.肠结核

E.溃疡性结肠息肉