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It’s well known that big animals, like polar bears, are sensitive to climate change. The Earth warms, polar ice【B1】______, and t
It’s well known that big animals, like polar bears, are sensitive to climate change. The Earth warms, polar ice【B1】______, and t
admin
2013-07-11
63
问题
It’s well known that big animals, like polar bears, are sensitive to climate change. The Earth warms, polar ice【B1】______, and the bears are out of luck. The same goes for tigers, sea lions, elephants. As the globe【B2】______ up and natural environments change, all big【B3】______are potentially at risk.
But what about insects? Some may be able to【B4】______just about anywhere. But most insects are just as sensitive to climate change as their larger, more beloved animal【B5】______.
What’s more, insects are【B6】______ more important than large mammals, environmentally speaking. While several thousand polar bears wander the arctic, untold billions of insects live in【B7】______everywhere on Earth. And they’re【B8】______ in every ecosystem. For example, many of the world’s crops and other plants rely on insects for pollination(授粉).【B9】______. And there are the animals, like birds, that feed on insects.
So how exactly will global warming affect insects? We don’t really know. Some may go extinct. 【B10】______. And this could have all sorts of important implications for crops and entire ecosystems.
【B11】______, they’re particularly sensitive to climate change. It’s hard to predict what will happen to insects as the Earth warms. But it looks like we’re about to find out.
【B9】
选项
答案
In forests,insects help break down dead trees and prepare the soil for new growth
解析
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0
大学英语四级
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