题目解析：
【题目翻译】根据第4段，Guthrie认为冰河期动物群的牙齿支持以下哪个结论？
A：大型哺乳动物不可能在贝林根群岛上生存。
B:草地是贝林根群岛景观的一部分。
C:强风把干草吹到雪地里。
D：马和野牛没有能力在深厚的积雪中寻找食物。
【判定题型】：题目问的是文章中的具体细节信息，故根据题目问法可以判断本题为事实信息题。
【关键词定位】此题根据关键词teeth, ice-age fauna定位到原文的nearly all of the ice-age fauna had teeth that indicate an adaptation to grasses and sedges.意思是“几乎所有的冰河期动物都有表明对草和莎草适应的牙齿。”
【逻辑分析】第四段表明了几乎所有冰河时代动物的牙齿都表明它们适应了禾草和莎草。
【选项分析】
A：不符，错误。文章没有提到。
B：符合，正确。此句中的indicate对应题干的support, B选项的grassland对应句中的an adaptation to grasses and sedges。故B选项正确。
C：不符，错误。文章说的是吹走积雪，露出干草。
D：不符，错误。文章中说是有能力的。
The presence of mammal species that require grassland vegetation has led Arctic biologist Dale Guthrie to argue that while cold and dry, there must have been broad areas of dense vegetation to support herds of mammoth, horse, and bison. Further, nearly all of the ice-age fauna had teeth that indicate an adaptation to grasses and sedges; they could not have been supported by a modern flora of mosses and lichens. Guthrie has also demonstrated that the landscape must have been subject to intense and continuous winds, especially in winter. He makes this argument based on the anatomy of horse and bison, which do not have the ability to search for food through deep snow cover. They need landscapes with strong winds that remove the winter snows, exposing the dry grasses beneath. Guthrie applied the term “ mammoth steppe" to characterize this landscape.
