WhatisthetallestmountainonEarth?Mostschoolchildrenwill...

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问题详情：

What is the tallest mountain on Earth? Most school children will say the answer is Mount Qomolangma (珠穆拉玛峰) near the border between Nepal and Tibet, China.

There is something that is three hundred and four meters taller than Mount Qomolangma. 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 more active volcano on Earth. It has erupted (喷发) more than thirty times since records were first kept in eighteen forty-three. Today, it is not erupting. 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. One of them, named Kilauea, is still active. It has erupted 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 nineteen eighty-three. 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. Experts say the volcanoes of Mauna Loa and Kilauea are a serious threat to property on many parts of the island.

Experts say the volcanoes of the island of Hawaii are proof that the changing environment of Earth is, and will always remain beyond human control.

25. By mentioning “Mount Qomolangma”, the author stresses that Mauna Loa is _______.

A. the tallest in the world

B. the longest in the world

C. the largest in the world

D. the most active on earth

26. The underlined word “lava” in the 4th paragraph refers to _______.

A. ash rock B. solid rock C. bed rock D. liquid rock

27. Which of the following is TRUE according to the passage?

A. Mauna Loa is mostly above water.

B. Mauna Loa is over one half as large as Hawaiian Islands.

C. Hawaiian volcanoes are under human control now.