2025年06月英语四级真题(第1套) · 仔细阅读(第1篇)逐行跟打 🔁 整篇模式    ← 返回
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1New research suggests that pandas may be at risk of dying out because they are too comfortable. Experts say too much
2happiness can stop the bears from searching for new mates. Environmentalists have long believed that building roads or
3homes near the bears may threaten their survival by ""reducing or fragmenting their natural: habitats”, The Times
4reported. But the new research suggests that a “modest degree of discomfort and fragmentation” may actually help
5preserve panda populations. The research was conducted by scientists from Michigan State University. It concluded that
6pandas fail to wander off in search of new mates if they find their habitat too comfortable, resulting in a lack of
7vital genetic diversity. For their study—— outlined in a paper in the journal Conservation Biology—— the team looked at
8genetic diversity and spread among a Chinese panda population. The ideal level of perfectly livable habitat was found to
9be only 80% of an area, with the remainder either too harsh or too affected by human activity. The experts concluded
10that pandas should ideally “be happy enough to thrive, but not so content that they don't want to move around and find
11new mates”. Their conclusions about what The Guardian described as this “sweet spot“ are in line with the so-called
12Goldilocks principle: that there can be just the right amount of something. The concept has been applied to a wide range
13of disciplines, from developmental psychology to economics and engineering. Claudio Sillero, a professor of conservation
14biology at Oxford University, told the newspaper that the new findings could have implications beyond panda
15conservation. “Most large animals that eat meat live in increasingly fragmented landscapes,said Sillero, who was not
16involved in the research, "It may well be that the messy nature of their relationship with human efforts induces more
17animals to scatter or travel further, and might result in greater genetic connectivity and enhanced population
18persistence." The most recent count of pandas found that there were more than 1,800 left in the wild, putting them on
19the list of vulnerable, but not endangered, species.
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