TPO64阅读真题+题目+答案下载：Auditory Perception in Infancy

第一篇阅读请点击：TPO64阅读真题+题目+答案下载：Characteristics of Pterosaurs

TPO64阅读真题+题目+答案下载：Auditory Perception in Infancy

Because they have had some practice in hearing before birth, it is not surprising that infants have reasonably good auditory perception after they are born. In fact, for certain very high and very low frequencies, infants actually are more sensitive to sound than adults-a sensitivity that seems to increase during the first two years of life. On the other hand, infants are initially less sensitive than adults to middle-range frequencies. Eventually, however, their capabilities within the middle range improve.

1. The word "init ially" in the passage is closest in meaning to

A.usually

B.at first

C.to some extent

D.basically

2. According to paragraph 1, which of the fo llowing statements does NOT accurately characterize auditory capability in infants?

A.Infants have good aud itory capabilit ies in extreme frequencies rather than in middle frequencies.

B.Infants have no experience with auditory stimuli before they are born.

C.Infants are more capable of hearing high and low frequencies than adults are, and this capability increases during the first two years of life.

D.An infant' s sensit ivity to frequencies in the middle range improves as the infant grows older.

It is not fully clear what leads to the improvement during infancy in sensitivity to sounds, although it may be related to the maturation of the nervous system. More puzzling is why, after infancy, children's ability to hear very high and low frequencies gradually declines. One explanation may be that exposure to high levels of noise may diminish capacities at the extreme ranges.

3. Which of the following best describes the organization of paragraph 2?

A.A brief discussion of two changes in auditory perception together with possible explanations of them

B.Two hypotheses about auditory perception, followed by summaries of experiments that have tested those hypotheses

C.A brief history of studies of aud itory perception, followed by a discussion of two recent stud ies

D.A comparison of two different answers to an important question in the study of aud itory perception

In addition to the ability to detect sound, infants need several other abilities in order to hear effectively. For instance, sound localization permits infants to pin point the direction from which a sound is emanating. Compared to adults, infants have a slight handicap in this task, because effective sound localization requires the use of the slight difference in the times at which a sound reaches our two ears. Because infants' heads are smaller than those of adults; the difference in timing of the arrival of sound at the two ears is less than it is in adults. However，despite the potential limitation brought about by their smaller heads, infants' sound localization abilities are actually fairly good even at birth, and they reach adult levels of success by the age of one year. Interestingly, their improvement is not steady: although we don't know why： the accuracy of sound localization actually declines between birth and two months of age, but then begins to increase.

。。。。以下TPO64阅读真题原文及题目已省略！

63阅读请点击查看：

TPO63阅读真题+题目+答案下载：The Roman Empire

TPO63阅读真题+题目+答案下载：The Sumerians and Regional Interdependence

TPO63阅读真题+题目+答案下载：Structure and Composition of Comets

完整版TPO64阅读(3篇)原文+题目+答案下载，5元有偿!