Below is a text with blanks. Click on each blank, a list of choices will appear. Select the appropriate answer choice for each blank.
下面的文本有一些空格。点击每个空格会出现一组选项，请为每个空格选出最合适的答案。
But look beyond fossil fuels for the most intriguing trends. One is that the energy intensity of the world economy - the amount of energy it takes to produce one dollar’s of income - keeps falling, at a rate of about 2 percent. What this means is that even without any change in the shares of fossil-based and fossil-free sources in the world’s energy mix, we could have 2 percent annual economic growth without increasing carbon emissions from energy use. Of course, that is not enough to climate change and we need more economic growth than that. It is a stunning number, which refutes the claim by some environmentalists that permanent economic growth is fundamentally incompatible finite physical resources.
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