题目内容

Which of the following best describes the function of the highlighted sentence?
• AIt undermines the assumption that human activity has had a significant impact on Earths climate
• B It supports the assumption that Earths temperatures have risen appreciably over the past 100 years
• C It questions the assumption that greenhouse gases have had a warming effect on Earth's climate
• DIt challenges the assumption that human activity began to affect Earth`s climate after the advent of industrialization
• EIt supports the assumption that greenhouse gases are a direct by-product of industrial activities

D显示答案

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