Ⅲ. 阅读理解,回答问题。
In 2011, a powerful earthquake hit Japan, causing a terrible tsunami. The tsunami waves reached heights of up to 40 metres in some areas, destroying thousands of homes and buildings. Many people lost their lives, and millions were left homeless.
During the disaster, many stories of courage and kindness emerged. One such story was about a 12-year-old boy named Yuuki. When the earthquake happened, Yuuki was at school. He quickly followed the teacher's instructions and got under his desk. After the shaking stopped, he helped his classmates escape from the classroom safely.
On his way home, Yuuki noticed that the sea water was pulling back. He remembered what he had learned about tsunamis in school. He immediately ran to tell the people in his neighborhood. With Yuuki's warning, many people were able to move to higher ground in time. Yuuki also helped an old lady who couldn't walk quickly to safety.
Thanks to Yuuki's quick thinking and kindness, many lives were saved. And he was regarded as a hero.
1. What caused the tsunami in Japan in 2011?

2. What did Yuuki do when the earthquake happened?

3. What did Yuuki do to help others when he realized the danger of the tsunami?

4. Why was Yuuki regarded as a hero?

Ⅲ.1.A powerful earthquake.
2.He quickly followed the teacher's instructions and got under his desk.
3.He immediately ran to tell the people in his neighborhood and helped an old lady who couldn't walk quickly to safety.
4.Because his quick thinking and kindness saved many lives.