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.To use the echolocation technique, Lucas has to learn how to ______. A. walk on a bumpy roadB. draw pictures of things aroundC. make sounds and respond to themD. copy the sounds of bats or dolphins
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.To use the echolocation technique, Lucas has to learn how to ______. A. walk on a bumpy roadB. draw pictures of things aroundC. make sounds and respond to themD. copy the sounds of bats or dolphins
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，过去非常害怕走路，但现在通过一种叫做回声定位的技术，他变得比父母想象的更加灵活。回声定位技术类似于海豚和蝙蝠使用的方法，使Lucas能够通过自己创造的声音来描绘周围环境的画面。
步骤 2：理解回声定位技术
Lucas通过点击舌头并聆听回声来“看到”周围的世界。从声音中，他可以分辨出周围物体的位置、深度和形状，甚至可以导航到不熟悉的区域。
步骤 3：分析选项
A. 走在崎岖的道路上：这并不是回声定位技术的核心。
B. 绘制周围事物的图画：虽然Lucas能够描绘周围环境的画面，但这不是他使用回声定位技术的核心。
C. 发出声音并对其作出反应：这是回声定位技术的核心，Lucas通过点击舌头发出声音并聆听回声来“看到”周围的世界。
D. 模仿蝙蝠或海豚的声音：虽然回声定位技术类似于海豚和蝙蝠使用的方法，但这并不是Lucas使用回声定位技术的核心。