climbed down into the crater.

B. It was his first sight of an eruption.

C. It was the first time for him to watch the crater.

D. Both B and C.

3. Why does the author think his job is the greatest?

A. It makes him feel excited and alive.

　B. It's the most dangerous job in the world.

C. It allows him to travel to many places.

　D. It allows him to see volcanoes erupt.

4. What did the author do after he was appointed as a volcanologist?

A. He collected information about Mount Kilauea on the spot.

B. He analyzed the data and predicted where the lava would flow.

C. He persuaded people to move their homes out of the path of the lava.

D. He saved people who were covered with lava.

5. Which of the following descriptions of an eruption is NOT correct?

A. It causes great damage near the top of Mount Kilauea.

B. The places where the lava flows are usually seriously damaged.