阅读短文，根据短文内容判断下列句子正误，正确的打"√" ，错误的打"×"。
   Mr Black is a careful（仔细的，小心的） driver.One day he is driving home.When he goes to a crossing，he finds a "slow"sign（标志），so he slows down.He looks both ways to see no cars coming，so he is ready to drive away.
   Just then，he hears a police whistle（吹哨），so he stop by the side of the road.A policeman walks to him and says：You should stop at the crossing.Mr Black says：It's slow，not stop.
   The policeman looks at the sign，and says："Well，I am very sorry.I am in the wrong street."

（1）The police is careful．

×

×

（2）Mr Black often drives very fast．

×

×

（3）Mr Black stops his car at the crossing．

×

×

（4）Mr Black stops because he hears a police whistle．

√

√

（5）The policeman is in the wrong street．

√

√