2. We know from the text that carbon dioxide ___.

　　is one of the most important greenhouse gases

　　has fossil fuels

　　traps cold near the planet’s surface

　　exist in human activities

　　3. From the text, we know when we say the temperature of something has increased by about 0.7+ 0.2°C, the + 0.2°C means___.

　　the increase might by as small as 0.3°C or as great as 0.7°C

　　the increase might by as small as 0.5°C or as great as 0.8°C

　　the increase might by as small as 0.5°C or as great as 0.9°C

　　the increase might by as small as 0.4 C or as great as 0.8°C

　　4. What would be the best title for this text?

　　What Are the Scientific Disagreements

　　You Can Think of This Website

　　What Do We Know about Global Climate Change?

　　The Vast Majority of Climate Researchers

　　参考答案1—4、 AACC

　　【阅读理解】介绍说明类

　　阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项。

　　You’re in a department store and you see a couple of attractive young women looking at a sweater. You listen to their conversation:

　　“I can’t believe it—a Lorenzo Bertolla!They are almost impossible to find. Isn’t it beautiful? And it’s a lot cheaper than the one Sara bought in Rome.”

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