Passage Two Born without sight, 7-year-old Lucas Murray used to be so afraid of walking that he wouldn’t take a step without his parents. He wouldn’t walk on a bumpy surface. But now, Lucas has become more mobile than his parents ever imagined, running with friends, playing basketball and jumping on a (蹦床)―all on his own. The incredible change is owed to a technique called echolocation, similar to the method used by dolphins and bats, that allows Lucas to paint a picture of his surroundings using the sound he creates himself. To "see" the world around him, he dicks his tongue and listens to the echo that bounces back. From the sound, he can make out the location, depth and shape of objects around him, allowing him to (导航) even unfamiliar areas. Though it’s estimated that only about 5% to 10% of the blind population now uses a (声呐系 统)-type approach, the Murrays hope it could someday become as common as the cane. Two years ago, Daniel Kish, a blind psychologist who has practiced the technique since childhood and has been teaching it for more than 15 years, traveled to the Murrays’ hometown and worked with Lucas for four days, teaching him not just echolocation, but also convincing Lucas and his parents that blindness doesfft need to be a limiting condition. "You have to let go, and it’s the hardest thing in the world;’ said Sarah Murray. When Kish suggested the family let Lucas walk along the shore on his own, she said, "It was frightening. And Lucas found it frightening too:" But after the family overcame the initial fear, Lucas made rapid progress. He learned how to detect different-sized bowls and cardboard panels by clicking to navigating grocery stores entirely on his own. In addition to clicking, Lucas also uses a white cane to find his way. "He likes exploring things, and he likes climbing things" his mother said. "He’ll go up the elevator. That wouldn’t have been believable in a million years:’ She said the technique is second nature to him now.The unbelievable change that happened to Lucas is due to many factors EXCEPT ______. A. Daniel Kish’s helpB. his parents’ encouragementC. sufficient outdoor physical exercisesD. his willingness to make constant efforts
Passage Two Born without sight, 7-year-old Lucas Murray used to be so afraid of walking that he wouldn’t take a step without his parents. He wouldn’t walk on a bumpy surface. But now, Lucas has become more mobile than his parents ever imagined, running with friends, playing basketball and jumping on a (蹦床)―all on his own. The incredible change is owed to a technique called echolocation, similar to the method used by dolphins and bats, that allows Lucas to paint a picture of his surroundings using the sound he creates himself. To "see" the world around him, he dicks his tongue and listens to the echo that bounces back. From the sound, he can make out the location, depth and shape of objects around him, allowing him to (导航) even unfamiliar areas. Though it’s estimated that only about 5% to 10% of the blind population now uses a (声呐系 统)-type approach, the Murrays hope it could someday become as common as the cane. Two years ago, Daniel Kish, a blind psychologist who has practiced the technique since childhood and has been teaching it for more than 15 years, traveled to the Murrays’ hometown and worked with Lucas for four days, teaching him not just echolocation, but also convincing Lucas and his parents that blindness doesfft need to be a limiting condition. "You have to let go, and it’s the hardest thing in the world;’ said Sarah Murray. When Kish suggested the family let Lucas walk along the shore on his own, she said, "It was frightening. And Lucas found it frightening too:" But after the family overcame the initial fear, Lucas made rapid progress. He learned how to detect different-sized bowls and cardboard panels by clicking to navigating grocery stores entirely on his own. In addition to clicking, Lucas also uses a white cane to find his way. "He likes exploring things, and he likes climbing things" his mother said. "He’ll go up the elevator. That wouldn’t have been believable in a million years:’ She said the technique is second nature to him now.The unbelievable change that happened to Lucas is due to many factors EXCEPT ______. A. Daniel Kish’s helpB. his parents’ encouragementC. sufficient outdoor physical exercisesD. his willingness to make constant efforts
题目解答
答案
C
解析
文章讲述了7岁的Lucas Murray由于天生失明，曾经非常害怕走路，但通过一种叫做回声定位的技术，他现在能够独立地跑步、打篮球和跳蹦床。这种技术类似于海豚和蝙蝠使用的回声定位方法，使Lucas能够通过自己创造的声音来描绘周围的环境。
步骤 2：分析关键因素
文章中提到，Lucas的变化得益于Daniel Kish的帮助，他的父母的鼓励，以及他自己的不断努力。Daniel Kish是一位盲人心理学家，他教Lucas回声定位技术，并且鼓励Lucas和他的父母相信失明并不需要成为限制条件。Lucas的父母也鼓励他尝试独立行走，尽管一开始很害怕，但最终Lucas克服了恐惧，取得了快速的进步。
步骤 3：排除不相关因素
文章中没有提到Lucas进行足够的户外体育锻炼。因此，选项C（足够的户外体育锻炼）是Lucas变化中没有提到的因素。