What is the tallest mountain on Earth? Most school children will say the answer is【C1】______near the border between Nepal and Ti

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问题    What is the tallest mountain on Earth? Most school children will say the answer is【C1】______near the border between Nepal and Tibet. There is something that is【C2】______taller than Mount Everest. However, it is mainly【C3】______. It begins at the bottom of the Pacific Ocean, and rises more than seventeen kilometers from the ocean floor.
   Its name is Mauna Loa. In the 【C4】______, Mauna Loa means "Long Mountain." Mauna Loa is more than half of the island of Hawaii, the largest of the Hawaiian Islands. It is also the largest and【C5】______on Earth. It has produced liquid rock called lava more than thirty times since records were【C6】______in 1843. Today, Mauna Loa is quiet. It is not producing lava. However volcano experts say it is only【C7】______before this happens once again.
   Mauna Loa is not the only volcano on the island of Hawaii. There are【C8】______. Three of them are no longer active. One of them still【C9】______. It is named Kilauea. It has produced lava more than fifty times in the last one hundred years.【C10】______, red hot lava is pouring out of Kilauea. It has been doing this 【C11】______. Sometimes the lava moves slowly. At other times it【C12】______ very fast as huge amounts of pressure force it from the volcano. During these times, it moves almost as quickly as water【C13】______the side of a mountain. Sometimes Kilauea produces large amounts of lava that seem like【C14】______.
   When the lava from Kilauea【C15】______the ocean, its fierce heat produces great amounts of steam that rise into the air. The lava is so hot it【C16】______ underwater for some time. The lava from Kilauea continues to add land to the island as the volcanoes of Hawaii have always done. It is these volcanoes【C17】______the islands of Hawaii. Most of the time the lava of Kilauea seems to move【C18】______the ocean.
   Yet it is not as peaceful as it seems from a distance. In recent years the lava destroyed one small town on the island. The liquid rock slowly covered the town. It【C19】______and destroyed them. Nothing can stop the lava of Kilauea. Experts say the volcanoes of Mauna Loa and Kilauea are a serious 【C20】______on many parts of the island.
【C13】
What is the tallest mountain on Earth? Most school children will say the answer is Mount Everest near the border between Nepal and Tibet. There is something that is 304 meters taller than Mount Everest. However, it is mainly underwater. It begins at the bottom of the Pacific Ocean, and rises more than seventeen kilometers from the ocean floor.
   Its name is Mauna Loa. In the Hawaiian language, Mauna Loa means "Long Mountain". Mauna Loa is more than half of the island of Hawaii, the largest of the Hawaiian Islands. It is also the largest and most active volcano on Earth. It has produced liquid rock called lava more than thirty times since records were first kept in 1843. Today, Mauna Loa is quiet. It is not producing lava. However volcano experts say it is only a matter of time before this happens once again.
   Mauna Loa is not the only volcano on the island of Hawaii. There are four others. Three of them are no longer active. One of them still is active. It is named Kilauea. It has produced lava more than fifty times in the last one hundred years. At this moment, red hot lava is pouring out of Kilauea. It has been doing this since 1983. Sometimes the lava moves slowly. At other times it pours out very fast as huge amounts of pressure force it from the volcano. During these times, it moves almost as quickly as water moving down the side of a mountain. Sometimes Kilauea produces large amounts of lava that seem like rivers of fire.
   When the lava from Kilauea reaches the ocean, its fierce heat produces great amounts of steam that rise into the air. The lava is so hot it continues to burn underwater for some time. The lava from Kilauea continues to add land to the island as the volcanoes of Hawaii have always done. It is these volcanoes that formed the islands of Hawaii.
   Most of the time the lava of Kilauea seems to move peacefully toward the ocean. Yet it is not as peaceful as it seems from a distance. In recent years the lava destroyed one small town on the island. The liquid rock slowly covered the town. It blocked roads and destroyed them. Nothing can stop the lava of Kilauea. Experts say the volcanoes of Mauna Loa and Kilauea are a serious threat to property on many parts of the island.

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