完型填空:
In 2013 a France television company sent its reporters to the Paris underground. They took ___1_ __ to see what passengers would do if they saw someone attacked (被攻击) on the platform or trains. The incidents（事件） looked ___2___ but the y were all done with the help of actors. However, very __3___ people tried to help, and most passengers ___4___ not to notice. In one of the incidents, a foreigner was attacked by three men. The attack was on a train which was quite full, and although the man tried to get the___5___ passengers to help, they all refused．This is not only a French ___6___. A British newspaper reported in 2012 that a professor of Social Psychology in New York had sent his students out to rob(抢劫) their own cars. The students didn’t try to __7___ what they were doing. About 80 people ___8___ the car thefts（盗窃）, and only twelve of them tried to ___9___ the student robbers. In one incident, one man stopped, looked, and then put his hands over his ___10___ and shouted “I didn’t see that!” About forty people ___11___ to help the thieves, and two people
