Do you live in a big city? Do you like the traffic in your city?

There are too m___1___ accidents in big cities. Accidents often h__2__ when people are not careful, especially when they want to c__3__ the road. Why does it happen sometimes? Let me tell you.

When it rains, people are in a h__4__ because they don’t want to get w__5__. They often go across the road q__6__. Often they can’t see c__7__ because they hold umbrellas in front of them. Then accidents may happen at that time. Everyone knows that cars take l__8__ time to stop when it’s raining. So we must be more c__9__ if we want to be safe. Remember everyone has only one l__10__ and we must protect ourselves well.

与血小板粘附无关的因子是

A．TXA₂

B．von Willebrand因子

C．GPⅠb

D．GPⅡb