题目解析:
段落倒数第二句“Deer may move from high-elevation browse areas in summer down to the lowland areas in late fall.”意思是:深秋时,鹿可能会从夏天高海拔吃草地区迁移到低地地区。深秋也就是快到冬天了,因为高地食物不够了,所以才去低地。对应B选项。很多同学会错选C,这部分同学应该是定位到了最后一句话:Even with snow on the ground, the high bushy understory is exposed; also snow and wind bring down leafy branches of cedar, hemlock, red alder, and other arboreal fodder.说即使有雪覆盖地面,高的understory会暴露(understory指的是林下植被),而且还说风会leafy branches吹下来。C虽然提到了understory,但是easier说法和原文不符,原文说的是高的understroy在会曝露出来,有一定局限性,也没体现出比起以前更简单。A在原文物体及;D说冬天迁徙与上文的late fall冲突,也错。