During winter in the northern hemisphere, particularly in the higher latitudes, some people’s bodies long for the sun so much that they develop a seasonal affective disorder, or SAD, becoming joyless and depressed. SAD is relatively common in humans, but this phenomenon isn’t unique to humans.

    When animals are moved from their native habitats to new locations — such as being transferred from southern to northern latitudes — they undergo similar consequences, experiencing their own version of SAD. This is particularly problematic when it comes to zoo animals, says Kristine Gandia of the University of Stirling.

    Gandia’s team wanted to understand how SAD affects zoo animals, so they picked 11 giant pandas to study. Pandas do not hibernate (冬眠) during winter. They live in the bamboo forests of the mountain ranges in south central China, particularly in Sichuan, Shaanxi, and Gansu provinces, which are located much farther south than Scotland. They make great study subjects because many zoos have panda cameras, which means that the animals can be viewed remotely and quietly. Gandia along with her twelve colleagues dedicated a year to analyzing videos of pandas from five distinct zoos — some inside the animals’ natural habitat range and others in the higher latitudes of the northern climates. Unsurprisingly, their findings revealed that “pandas in zoos showed reduced activity levels compared to those within their latitudinal range.”

    People try to reduce the bad effects of SAD in winter. Some spend more time outside, especially in the morning. Some travel to places with more sun in winter. Gandia says zoos can do similar things. “With the indoor enclosures (圈地), you can control light and temperature. If you make the lighting like their native habitats, it can help animals follow their natural rhythms,” says Gandia. “Creating an environment that mimics the conditions in which creatures evolved to live can not only make them healthier and happier, but also preserve struggling species.”

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1.1. What can we know about people suffering from SAD?

A They become more active.

B They feel joyful and energetic.

C They develop a strong desire to hibernate.

D They experience a lack of joy.

解析：选D。细节理解题。根据第一段的“they develop a seasonal affective disorder, or SAD, becoming joyless and depressed”可知，患有季节性情感障碍的人会变得不快乐，感到沮丧。故选D。

2.2. Why did Gandia’s team choose giant pandas for their study on SAD?

A Because pandas are the only animals that do not hibernate.

B Because they live in bamboo forests far from Scotland.

C Because they can observe pandas without bothering them.

D Because pandas show the most severe symptoms of SAD.

解析：选C。细节理解题。根据第三段的“They make great study subjects because many zoos have panda cameras, which means that the animals can be viewed remotely and quietly.”可知，许多动物园都安装了专门的大熊猫摄像头，这让大熊猫成为了理想的研究对象，因为研究人员可以远程观察这些动物，而不对动物造成干扰。故选C。

3.3. How can zoos help animals with SAD according to Gandia?

A By imitating their natural habitats.

B By moving them back to their native habitats.

C By giving them special medicine to treat SAD.

D By reducing the number of visitors to decrease stress.

解析：选A。细节理解题。根据最后一段的“If you make the lighting like their native habitats, it can help animals follow their natural rhythms”和“Creating an environment that mimics the conditions in which creatures evolved to live can not only make them healthier and happier, but also preserve struggling species.”可知，根据Gandia的观点，室内场地可以调节光线和温度。如果能在这些场地中匹配自然环境的光照，就能帮助这些动物更好地与它们的自然节律同步，因此创造一个模拟动物进化场景的圈养环境可以帮助这些动物更好地与它们的自然节律同步，减轻SAD的影响。即模仿它们的自然栖息地的环境。故选A。

4.4. What type of writing is this text?

A An exhibition guide.

B A research report.

C An art show review.

D An advertisement.

解析：选B。推理判断题。根据全文内容可知，文章通过Gandia团队的研究讲述了动物园中的大熊猫与在其自然栖息地范围内的大熊猫相比，活动水平降低，说明季节性情感障碍不仅影响人类，也影响大熊猫，属于科学研究报告中的内容。故选B。