Question

Everything that humans hear is in the form of waves (波).Just as the eye sees light waves in the form of colors, the ear hears sound waves in the form of noises. The ear and the eye turn these different waves into signals that the brain (大脑) can make sense of.

The ears and brain have an amazing ability to recognize（识别）particular sounds. For example, a mother often can tell when her baby is crying even if there are other crying babies in the same room. This is because the sound of her baby’s cry has special meaning to her and the brain has recorded is importance.

The ability to recognize sounds improves with experiences. As the brain receives information about sounds from day to day, it stores the information in its memory. When the brain hears new sounds, it gives meaning to them based on the information already in the memory. This is why certain words or songs can make a person happy. Often it is not the words or songs themselves that cause this feeling. The sounds are connected to happy memories for that person.

Another hearing process controlled by the brain is to decide where a sound is coming from. One ear is usually closer to the source (来源) of a sound than the other ear is. Sound waves are stronger when they reach the ear that is closer. They also reach the closer ear first. The brain recognizes these differences and uses them to decide the location of the source of the sound.

1.Which of the following shows the normal hearing process of a mother hearing her baby crying?

a. The ears receive the sound waves.

b. The mother recognizes her baby’s cry.

c. The ears turn the sound waves into signals.

d. The baby’s cry travels in the form of sound waves

e. The brain connects the signals to the information in the memory.

A. d-a-c-b-eB. d-a-c-e-b

C. a-d-c-b-eD. a-d-c-e-b

2.. Certain words or songs can change a person’s moods mainly because of his .

A. lifestyle B. personality

C. experiences D. hobbies

3. What is the best title for this passage?

A. Human Brain’s Amazing Facts

B. Human Hearing Characteristics

C. How to improve Hearing

D. How Do Humans Hear

 

Answer 1

1.B

2.C

3.D

【解析】

试题分析：这篇短文主要介绍了我们人是怎样听到声音的。某些话语或歌曲可以改变一个人的情绪，主要是因为他的经验。对于一个一只耳朵失去听力的人来说，判断声音的来源是最困难的。原因是当声波到达较近耳朵的时候会比较强,声波会先到达较近的耳朵，大脑会辨认出这些不同并利用它们来判定声音来源。

1.下列哪项表明母亲听到她的婴儿哭声的一般过程？通读第一、二段，可知B。

2.某些话语或歌曲可以改变一个人的情绪，主要是因为他的经验。根据第三段内容可知答案，故选C。

3.。通读全文，主要讲的是人怎样听到声音的内容，故选D。

考点：科普类短文阅读。