阅读短文，并根据短文内容回答问题。
A terrible explosive noise was heard, immediately followed by strong shaking of the classroom building.
Mrs Li Lan, a country school teacher in Sichuan, who was giving a class, could hardly keep on her feet,
and many of her pupils made panic cries. Mrs Li realized at once that it must be a powerful earthquake
hitting the area. Although she herself was scared, she managed (设法) to make the children calm down,
opened the door right away and told the children to leave the classroom and get down to the playground
as quickly as possible.
When all the children had left, she followed them to the first floor. The earth still kept moving
violently (剧烈地). Some of the buildings nearby were falling down, and a great number of falling stones
were rolling down from the hills behind the school. Suddenly, she found a little boy fell over and was hit
by a big stone right on his body. She forgot the danger she was facing and ran over, trying to push the
stone away. The stone was so big that it was not easy for her to move it. She kept pushing until the boy
was pulled out, carrying him to the center of the playground. The boy was later sent to hospital and
saved.
1. What kind of disaster (灾难) happened in the story?
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2. What was Mrs Li's action when she saw the boy under the stone?
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3. Did Mrs Li fear death in the face of great danger?
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4. What do you want to say after you finish reading the story?
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