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| Rapid Reading Comprehension | |
| 摘 要： | The number of people with loss of hearing in America is about 250,000 people at the present time.Some of these people are fortunate enough to have hearing aids. The ear is a very complex part of the human body.A sound starts with sound waves traveling through the auditory canal towards the eardrum. The sound waves will cause the eardrum to vibrate. This vibration will be conducted by three small |
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