首页
登录
职称英语
A blind baby is doubly handicapped. Not only is it unable to see, but becaus
A blind baby is doubly handicapped. Not only is it unable to see, but becaus
游客
2024-04-13
11
管理
问题
A blind baby is doubly handicapped. Not only is it unable to see, but because it cannot receive the visual stimulus from its environment that a sighted child does, it is likely to be slow in intellectual development. Now the ten-month old son of Dr. and Mrs. Dennis Daughters is the subject of an unusual psychological experiment designed to prevent a lag in the learning process. With the aid of a sonar-type electronic device that he wears on his head, infant Dennis is learning to identify the people and objects in the world around him by means of echoes.
The device is a refinement of the "Sonicguide", an instrument produced by Telesensory Systems, Inc., of Palo Alto, Calif., and used by blind adults in addition to a sane or guide dog. As adapted for Dennis, it consists of a battery-powered system about the size of a half dollar that is on a headgear. A transmitter emits an ultrasonic pulse that creates an 80 degree cone of sound at 6 feet. Echoes from objects within the cone are perceived as sounds that vary in pitch and volume with the size and distance of the object. The closer an object is, the lower the pitch, and the larger the object, the louder the signal. Hard surfaces produce a sharp ping, while soft ones send back signals with a slightly fuzzy quality. An object slightly to the right of Dennis sends back a louder sound to his right ear than to the left. Thus, by simply moving his head right and left and up and down, he can not only locate an object but also get some notion of its shape and size, thanks to the varying qualities of sounds reaching his ears as the cone of ultrasound passes its edges. Dennis likes to use the device to play a kind of peek-a-boo with his mother. Standing on her knee and facing her directly, he receives a strong signal in both ears. By turning his head away, he makes her seem to disappear. From the first time he wore it," says Mrs. Daughters, "it was like a light going on in his head."
What remains to be determined is how well the device will help Dennis cope with his surroundings as he begins to walk and venture further into his environment. Meanwhile, Telesensory, Inc. is working on the development of sonar device with somewhat the same sensitivity as Dennis’s for use by school-age children. [br] What is Telesensory Systems, Inc. most likely to think about infant Dennis’ device?
选项
A、It had better be used by blind children from school age.
B、It needs improving for use in a complicated environment
C、It may not be so suitable for the blind adults.
D、It benefits blind children in terms of learning.
答案
D
解析
从末段末句中的school-age children及句中其他内容可以推断Telesensory最可能认为Dennis的声纳定位仪有利于儿童的学习过程,D为本题答案。原文并没有说他们认为学龄儿童才是使用该仪器最适合的年龄,A不正确;B是作者的看法,并非Telesensory的看法;虽然本文从头到尾讨论的都是盲童学习的问题,但第2段首句也提到过成人使用类似的装置,因此C不正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3553389.html
相关试题推荐
Insomewaystheemploymentinterviewislikeapersuasivespeechbecauseth
Insomewaystheemploymentinterviewislikeapersuasivespeechbecauseth
Insomewaystheemploymentinterviewislikeapersuasivespeechbecauseth
Insomewaystheemploymentinterviewislikeapersuasivespeechbecauseth
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
[originaltext]Ilovetreesbecausetheyhavemanydifferentshadesofgreen
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
随机试题
Thereportshowedusvery(clear)______howtheplanecrashed.clearly根据原句的语法结构,
Agriculturalexpertshavelaunchedalandandwatermanagementprojectinth
下列影响血浆从毛细血管滤过的因素中,不正确的是()。A.毛细血管血压 B.血
女性,62岁,干燥综合征病史15年,近2年来出现进行性呼吸困难、干咳,偶有痰中带
在商业银行持续经营条件下,能够用来吸收损失的资本工具有()。A.超额贷款损
副交感神经兴奋时A.心率减慢 B.瞳孔缩小 C.胃肠运动加强 D.糖原分解
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
根据《环境影响评价技术导则—大气环境》,大气环境影响评价中,经过对建设项目的初步
(2015年真题)关于招标方式的说法,正确的是( )。A.公开招标是招标人以招
加气混凝土砌块墙如无切实有效措施,不得使用于()。A.建筑物室内地面标高以
最新回复
(
0
)