【单选题】Global Warming and Climate Change What Are Global Warming and Climate Change? Global warming and climate change refer to an increase in average global temperatures. Natural events and human activities...
【简答题】Read and Choose. 读短文,选择正确答案。 The "greenhouse effect" is often associated with global warming, but the truth is we couldn't live without it. The "greenhouse gases" include water vapor, carbon dioxide (...
【简答题】From the following list, choose a synonym for the word underlined in each sentence. The word and its synonym are both chosen from the text. summarize skip merely l...