Answer the question(根据短文内容回答下列问题)

　　Just before midnight on July the 31th, 1997, some skiers returning to their hotel in the village of Thredbo heard a sound like the passing of ten trains．The frightened skiers rushed to where the noise had come from and found that part of the hillside about the village had dropped down onto two buildings in which nineteen people had been sleeping．The buildings were now buried(掩埋)under tons of earth and huge rocks．

　　As soon as the day broke, rescue(救援)workers began digging for people alive．They used hand tools because they were worried that machines might hurt anyone trapped(围困)under the rocks．Rain and snow kept falling and there was a danger that more earth and rocks would come down the mountain．

　　For two days , rescue workers never stopped digging．On Thursday evening they found the first body．The next day they found two more．They had almost given up hope of finding anyone alive when, at 5∶37 a.m．on Saturday morning, a special machine they were using found a small movement．

　　Immediately someone shouted to tell the workers to be silent．Everyone stopped talking, no one moved．A fireman lay down over to a hole in a large piece of concrete(混凝土)and shouted down．“Can anyone hear me?” “I can hear you,” came the reply．

　　Worried that their digging could start more rock falling down the mountain, rescue workers began carefully taking away the rocks and dirt on top of the trapped man．By 10 o'clock, a small hole had been made．At 10∶10 a.m．, rescue workers sent two tubes down through the hole, one carrying warm air and the other a warm drink．Then a microphone was passed through the hole so that they could talk to the man．

　　For the next seven hours, two workers talked to the trapped man while others slowly and carefully worked to free him．They found out that his name was Stuart Diver and that he and his wife were sleeping then the disaster happened．His wife was washed away by the mud and water．For more than two days, Stuart had been trapped between two pieces of concretes, with only 30 cm between his head and the concrete above．Every few hours, icy water had rushed over him and he had had to lift his head out of the water to breathe．By the time he was found, he was cold and hungry and had almost given up any hope of being rescued．

　　Finally, at 5∶17 p.m．on Saturday evening, Stuart was pulled out．Rescue workers all over the hillside began shouting with joy．In thousands of homes, people were also cheering as they watched the rescue on their televisions．

1．When did the disaster happen?

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2．Why did the rescue workers use hand tools to dig for the people alive?

Because _________________________

3．How did the rescue workers find Stuart Diver?

4．Was Stuart the only person that was saved in this disaster?

5．How much time did it take the rescue workers to save Stuart from under the rubble?

It ______________________________

6．How was the whole rescue?

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