3．
根据短文内容，回答下列问题。
In 2001, a French television company sent its reporters to the Paris
Metro. They took cameras to see what passengers would do if they saw someone
attacked on the platform or on the trains. They acted out incidents. The
incidents looked real but they were all done with the help of actors. However,
very few people tried to help, and most passengers pretended not to notice. In
one incident, a foreigner was attacked by three men. The attack was on a train
which was quite full, and although one man tried to get the passengers
to help, they all refused. It seems that such behaviour (行为) is not unusual,
but the question is why. Is it a problem of big cities, or would the same thing
happen anywhere? To discuss these questions, we have in the studio (演播室) Professor or Wilson, who is an expert on the subject…
