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  3. Thousands of years ago, in the middle of an ocean, miles from the nearest island, an undersea volcano broke out. The hot liquid

Thousands of years ago, in the middle of an ocean, miles from the nearest island, an undersea volcano broke out. The hot liquid

admin2012-09-11  30
问题     Thousands of years ago, in the middle of an ocean, miles from the nearest island, an undersea volcano broke out. The hot liquid piled higher and higher and spread wider and wider. In this way, an island rose up in the sea.
    As time went on, hot sun and cool rains made the rock split and break to pieces. Sea waves dashed against the rock. In this way, soil and sand came into being.
    Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider spun its web in vain, because there were no insects for its web to catch. Insects couldn’t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.
According to the passage, which of the following is true?
选项 A、Spiders were the first life that could live on the island.
B、The island is far away from any piece of land.
C、Insects could not live on the island without plants.
D、Plants were brought to the island by human beings.
答案C
解析 第三段第三句：Only plants could grow first．“植物必须先于其他生物产生。”紧接着文章论述了为什么必须先产生植物——只有植物可以为动物提供食物。C项“没有植物，昆虫就不能在岛上生存”正确。
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