1 . The ground we walk on seems firm, but deep under the earth and under the sea the rocks change and move. In some parts of the world there are “fire mountains”， which we call volcanoes. From time to time they burst open and throw out fire and burning ashes. These volcanoes are very dangerous.
Hong Kong does not have any volcanoes but there are many volcanoes in Indonesia and Philippines. There is also a famous mountain near Tokyo, Japan, which is a volcano too. Its name is Mount Fuji. For much of the year it is covered with snow.
One of the most famous volcanoes which erupted in recent times was Krakatoa, on an island in Indonesia. The first explosions took place on 20th May, 1883, but the biggest eruption did not come until the 26th and 27th August of that year. The people on the island were used to the explosions by that time, and so they were completely unprepared for this terrible happening. Almost all the people on the island died and the explosion also made huge waves in the sea, which drowned (淹死) many people on the other island nearby. After the eruption was over, people saw that the whole northern part of the island had completely disappeared. Scientists say that 15 cubic (立方) kilometres of rocks and ash were thrown up in the explosion. The noise of the explosion was heard nearly 5,000 kilometres away in the middle of the Indian Ocean, and the city of Jakarta was completely dark for about two and a half hours.
1. There are many volcanoes ________.
| A．everywhere in the world |
| B．under the earth and the sea |
| C．in Hong Kong |
| D．in Indonesia |
2. The people near Krakatoa were unprepared when it had its biggest explosions because people there ________.
| A．had never met any explosions of the volcano before |
| B．were used to the explosions by that time |
| C．didn't want to leave their island |
| D．could do nothing but wait |
3. People who lived 5,000 kilometres away from Krakatoa could ________.
| A．see that the 15 cubic kilometres of rocks and ash were thrown up |
| B．hear the noise of the explosion |
| C．see the huge waves |
| D．see that Krakatoa was dark |
4. The biggest explosion made ________.
| A．all the people on the island die |
| B．the whole island disappear |
| C．the city of Jakarta completely dark for about two and a half hours |
| D．huge waves in the middle of the Indian Ocean |
