The er of slot machines( ) Slot machines or fruit machines have become very popular throughout the world. Just the lights and sounds can make the slot machine addict very excited This addict can lose a lot of money on the slot machine. Hobby gambling can very quickly turn into compulsive gambling on casino slot machines. This is the reason why the age limit in Las Vegas is 21. If a player who is younger than 21 even just pulls the lever ( 杠杆 )on the slot machine, he or she will not be allowed to take home the winnings. Read what happened to 19-year-old Kirk. He went to Las Vegas with his father last year. His father was not lucky on the slot machines, so his son asked if he could pull the lever for luck. The father agreed. Kirk pulled the lever and hit the jackpot( 头彩 ).Kirk won $1,061,812. Unfortunately, the camera showed that although Kirk's father put the coin into the machine, it was 19-year-old Kirk who pulled the lever, so the two went home without the money. Choose the best ending to complete each sentence.