Jack went to a barber's shop and had his hair cut, but when he came out, he was not happy with the result(结果). When his friend Bob saw him, he laughed and said, "What has happened to your hair, Jack?" Jack said, "I tried a new barber's shop today, because I wasn't quite satisfied with my old one, but this one seems even worse." Bob agreed(同意). "Yes, I think you're right, Jack. Now I'll tell you what to do when you go into a barber's shop next time: look at all the barber's hair, find out whose hair looks worst, and then go straight to him." "Why shall I go to him?" Jack asked. "But that would be foolish!" "Oh, no, it wouldn't," answered Bob. "Who cut that man's hair? Just think it. He couldn't cut it himself, could he? Another of the barbers cut it. So you know he can't be the worst barber."
When Jack went out of the barber's shop, he was not happy because ____.

A．nobody had cut his hair

B．the barber hadn't cut his hair well

C．the barber had cut his hair carefully

D．he was not satisfied with his old barber

"I tried a new barber's shop today." means ____.

A．this barber's shop was a new one

B．this was the only barber's shop in this town

C．Jack often went to this barber's shop

D．Jack had not been to this barber's shop before

After Jack had his hair cut, he thought ____.

A．the new barber's shop was the best one

B．the old barber's shop wasn't so good as the new one

C．the new barber's shop was worse than the old one

D．the old barber's shop was the worst one

Bob told Jack to find out which barber's hair looked the worst and then go straight to him. Why?

A．Because he was certainly the best barber.

B．Because he was free all the time.

C．Because he was the worst barber.

D．Because he wasn't the worst barber.

From the story we know that ____.

A．it's foolish to have one's hair cut at a barber's shop

B．barbers cut each other's hair

C．barbers never have their hair cut

D．a barber always cuts his hair by himself