练习:
　　1. Why did the writer refuse to wear a hearing aid at first?
　　A) It looked old-styled.
　　B) It was too costly.
　　C) He did not get the nerve to wear one.
　　D) It would make him look like an old man.
　　2. Which of the following about the features of Crystal Ear is NOT true according to Paragraph 2?
　　A) It is sensitive and powerful
　　B) It is inexpensive.
　　C) It is small in size.
　　D) Its sound is pure and natural.
　　3. According to Paragraph 3, Crystal Ear is very convenient and
　　A) you can wear it any time you like.
　　B) You can even clean it yourself.
　　C) It can signal where it is in case you cannot find it
　　D) You can even wear while swimming.
　　4. What does the writer say about hearing loss？
　　A） About 90 percent of people suffer hearing loss.
　　B） Hearing loss is the world's most frequent health problem.
　　C） About 10 percent of people wear hearing aids.
　　D） It is one of the most painful diseases in the world.
　　5. Why do many people leave their hearing problem untreated according to Paragraph 4?
　　A) They suffer only mild hearing loss.
　　B) Crystal Ear is not yet available in many places.
　　C) An conventional way of treating it is very troublesome.
　　D) They don't want to look like old people.
　　Key: DBABC