2014 is the year of horse in China. Do you know anything about the horse?

The horse is strong and runs very fast. He’s a useful and hard-working animal. The horse learns to know his master（主人） soon. He loves his master, even after his master has died. Here’s a story about such a horse. In a war, the master was killed, and fell from his horse. When his body was found some days later, the horse was still standing beside it. During that long time, the horse didn’t leave the body of his master, without food or water, in the coldest weather, driving away the birds that might eat it. Wasn’t be a great animal?

小题1:The horse is a _________ animal to man.

A．strange

B．lazy

C．useful

D．small小题2:When the body of the master was found, the horse was _________.

A．going away

B．eating grass beside it

C．drinking water

D．still standing beside it小题3:The story probably took place in _________.

A．spring

B．summer

C．autumn

D．winter

中药红花在开花初期、中期及后期颜色变化的原因是什么？