Climate change is often talked about, yet the change of seasons—warmer winters and hotter summers—may not be noticed because it happens very slowly. Studies show people don’t notice slow changes easily. The story of Princeton is a good example.

In the past, Lake Carnegie froze every winter. People in Princeton could skate on the thick ice through winter. However, around the 1970s, winters in Princeton started to become warmer. Now, the lake seldom freezes, so people cannot skate on it every winter. But most people there didn’t connect this with climate change.

The real-life example helped researchers look for a better way to get people to notice slow changes brought by climate change. In their research, they showed volunteers two different graphs (图表)—a temperature graph and a lake-freezing graph. The temperature graph showed a fictional (虚构的) town’s rising winter temperatures over the years. The lake-freezing graph showed whether the town’s lake froze each year. Both graphs showed the same climate trend (趋势), but they made the volunteers feel differently. When the volunteers saw the lake-freezing graph, they felt climate change was more serious, because they could directly see the lake didn’t freeze every year like before. This helped them see the influence of climate change clearly. But when the volunteers saw the temperature graph, they didn’t feel the same, because the graph failed to help them connect climate change with daily life.

With the help of what the research has found, we can actively notice slow changes in our daily life brought by climate change. At the same time, we can also help the people around us notice them.

1.1. What do studies show according to Paragraph 1?

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解析：选Studies show people don’t notice slow changes easily.。根据第一段原文“Studies show people don’t notice slow changes easily.” 可直接找到答案。句意：研究表明人们不容易注意到缓慢发生的变化。

2.2. When did winters in Princeton start to become warmer?

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解析：选Around the 1970s.。定位第二段“However, around the 1970s, winters in Princeton started to become warmer.”，提取时间信息即可。句意：大约在20世纪70年代。

3.3. What did the researchers show to the volunteers?

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解析：选They showed volunteers two different graphs—a temperature graph and a lake-freezing graph.。定位第三段“In their research, they showed volunteers two different graphs (图表)—a temperature graph and a lake-freezing graph.”，摘抄原句作答。句意：他们向志愿者展示两张不同的图表——气温图表和湖泊结冰图表。

4.4. What is the better way to draw public attention to climate change? (不超过15个词)

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解析：选Use daily-life examples to show climate change.。文章说明湖泊结冰这种和日常生活相关的例子，比单纯气温数据更容易让人感受到气候变化。要求不超过 15 词。参考原句思路：Show climate change through daily life examples.

5.5. What is the purpose of the text? (不超过15个词)

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解析：选To tell us to notice slow climate changes in life.。文章介绍研究，告诉我们要留意生活里气候变化带来的缓慢改变，不超过 15 词。