题干

读“全球候鸟迁徙路线图”及相关材料,回答问题.

材料一:在周边国家纷纷“中招”后,中国也终于未能幸免,此次禽流感为何来势如此汹汹?它是怎样传播扩散的?专家分析,此次禽流感,极有可能与迁徙候鸟参与传播有关.一般通过两种途径传染,一是通过禽肉、禽蛋等禽产品的流通进行传播,另一种就是通过飞禽传播,主要是通过大量携带病毒的候鸟迁徙进行传播.当携带病毒的野鸭、大雁等候鸟往南迁徙过冬时,其带有病毒的粪便及分泌物会污染迁徙沿途的水源、土壤等环境,当地禽类一旦接触带有病毒的环境,便会感染禽流感,并波及与之接触的人类.(新浪网)

材料二:1878年以来,禽流感的暴发频率呈几何级数增加,使人们不得不思考其中原因.首先,随着社会和科技的进步,人们对于疾病的关注更胜从前,同时由于流通渠道的方便和快捷,信息共享的程度更高了,一些流行疾病由于人们的关注而显得发生得更加频繁.但是不可否认,人类的活动确实在不断改变着自然,改变着人类所有能够触及的生态环境.禽流感近年来的频繁暴发确实和人类对环境的改变有着一定的关系.(CCTV﹣农业频道)

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阅读下列短文,从每题所给的四个选项 (A 、B 、C  和 D )中 ,选出最佳选项。

Anne LaBastille was born in New York City and grew up in New Jersey. Her first experience with the wilderness was in the Adirondacks in the northeast of New York, where she worked at a summer resort (度假胜地) to earn money for college tuition (学费) by caring for the horses, giving riding lessons, and working as a waitress. And she had many chances to begin her adventure in the Adirondack wilderness.

Anne returned to school in the fall, but she continued to spend as much time as she could in the Adirondacks. She grew to love her time alone in the mountains. Anne graduated from college with a bachelor's degree in conservation of natural resources (资源) and began working for the National Audubon Society in Florida as a wildlife tour leader.

Although Anne took great pleasure in showing people the animals living in t he Florida Keys and the Everglades National Park, she longed for the mountains in the northern parts of New York. Finally she decided to build a cabin near Black Bear Lake. Over the years, however, more and more tourists began hiking near her cabin. As a result, Anne decided to build another cabin deeper in the woods at Lily Pad Lake.

    Anne lived in the woods for most of her life. She enjoyed living alone in the woods, and her life was far too busy for her to be lonely. When she was not writing books, she wrote articles for National Geographic, Reader's Digest, and other magazines. In her later years, Anne conducted research in Guatemala on an endangered bird called the grebe. She also lectured nationwide about ecology. Besides, Anne worked with a number of organizations dedicated to (致力于) conservation.

    As a respected guide, author, and conservationist, Anne not only loved the land but also had found a way to become part of it.