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【语篇解读】　本文是应用文。介绍了一款大众能买得起的助听器的相关内容。

1. Why did Dr. Cherukuri invent his MDHearingAid AIR?

A. He meant to prevent diseases such as depression and social isolation.

B. He intended to provide patients with low-priced hearing aids of high quality.

C. The expense of the hearing aid isn't covered by health insurance policies.

D. High-priced hearing aids couldn't be easily assessed on the market.

答案　B　[推理判断题。根据第二段中的"many of his patients would benefit. . . couldn't afford the expense"及第三段中的"He evaluated all the high-priced. . . lightweight appearance"可推知，他发明MDHearingAid AIR是为了向病人提供质优价廉的助听器。故选B项。]

2. According to the passage，which of the following about MDHearingAid AIR is TRUE?

A. Its price is approximately $3，500.

B. Patients can pay for it after they have tried it for 45 days.

C. Annoying background noise doesn't exist in the hearing aid.