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What is the main idea of the passage?
What is the main idea of the passage?
admin
2016-11-13
53
问题
What is the main idea of the passage?
Climate, more than any other single factor, determines distributions of life on Earth. Climatic boundaries establish the limits within which organisms can survive. Plants, even more than animals, must be well adapted to climate in order to survive. They cannot move about or take shelter but must be equipped to endure whatever weather conditions are likely to occur. In the harsh conditions of tundra, for example, low growing mosses, lichens, and a few flowering plants all hug the ground for shelter from icy winds.
Animals, despite their ability to move about and find shelters, are just as much influenced by climate as plants are. Creatures such as the camel and the penguin are so highly specialized that they have extremely limited distribution. Others, such as bears, are flexible enough to adapt to a broad range of climates. Ocean-dwelling organisms are just as sensitive to climatic changes—in this case temperature and salinity—as land animals. Reef corals can survive only in clear warm seawater. Certain foraminifers are so sensitive to changes in their environment that their presence can be taken as an index of sea temperature. Human beings are among the least specialized of all animals and can live almost anywhere. Their clothes and their homes act as a sort of "miniature climate" that can be taken with them everywhere.
选项
A、In some sense, human beings are more vulnerable to climate than plants and animals.
B、Life distributions are to a great extent determined by their own characteristics.
C、Life distributions on Earth are mainly determined by climate.
D、Despite their flexibility, animals are just as much influenced by climate as plants are.
答案
C
解析
此题考查的是全文中心思想。录音中的对应信息是“气候比其他任何单一的因素更能决定地球上生命的分布。”故正确答案为C。听音时应注意听首句,因为一般情况下,短文的首句为主题句。
转载请注明原文地址:https://kaotiyun.com/show/enJK777K
0
专业英语四级
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