医考帮考研英语答案如下：
1. 问题：What is the main topic of the passage?
答案：The main topic of the passage is the importance of environmental protection.
2. 问题：According to the passage, which of the following is NOT a cause of climate change?
答案：The correct answer is B. The use of solar energy.
3. 问题：The author suggests that in order to combat climate change, we should:
答案：The author suggests that in order to combat climate change, we should reduce carbon emissions and switch to renewable energy sources.
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