单选题
Until recently, the medical community believed that most hearing loss was caused by hear cells in the ear degrading as we age. But evidence is emerging that sound levels at sporting events, concerts, nightclubs and on personal devices can cause lasting damage to the connections between hear cells in the ear and the nerves that 27 sounds to the brain. Over 1.1 billion teenagers and young adults worldwide could be at risk of hearing loss as a result of 28 to unsafe levels of recreational noise, according to a recent World Health Organization report. To make matters worse, this kind of hearing loss doesn't show up on 29 tests. Researchers are calling it a hidden epidemic. 'We think this problem is 30 prevalent. but it's difficult to measure because the tools we have available today are not sensitive enough,' says Konstantina Stankovic, an auditory neuroseientist and surgeon at Massachusetts Eye and Ear, and Harvard Medical School, in Boston. Stankovic is now working with colleagues at the Swiss Federal Institute of Technology in Lausanne to develop imaging 31 that would allow us to see this kind of neural damage in living brains. This could help with early diagnosis. Others are developing drugs that could help 32 the connections between the ear and the brain. To properly 33 our ears, loud noises should be banned in many public places just as smoking is now, says Stankovic. Some countries have laws in place to protect 34 in bars and clubs by monitoring noise levels. Last year, Minneapolis City Council made it 35 for bars and clubs to offer free ear buds to patrons. Stankovic thinks more will need to be done to change 36 accepted norms around recreational noise. 'I think it will require a public health effort similar to the efforts for limiting smoking, because of the peer pressure associated with loud music and noisy environments,' she says.? A. compulsory B. condense C. exposure D. incredibly E. independently F. protection G. restore H. safeguard I. socially J. standard K. techniques L. transmit M. treat N. uneasy O. workers
【答案解析】该空格位于介词短语as a result of之后,据此判断应填入名词,作介词短语的宾语。前一句中提到,环境噪音可能会导致耳朵中的听觉细胞与负责传导声音的神经之间的联系出现问题,从而引起听觉受损,而本句中再一次说明,娱乐环境中的噪音处在非安全水平,暴露在其中会导致青少年听力受损,故答案为C项的exposure“暴露”。 备选项中F项的protection“保炉,防卫”,K项的techniques“技术,手法”和O项的workers“工人,工作人员”与上下文语义不符,故均可排除。
【答案解析】空格前有动词help,后面有名词connections,据此推断应填入动词原形,构成help do sth.的结构。上句提到,Stankovic和同事们正在一起努力开发一种图形技术,借此将大脑中的神经损伤图形化,本句中的Others则说明,其他科学家正在从另一方面入手,那就是______耳朵与大脑之间的联系,结合备选项B的condense“凝结,浓缩”,G项的restore“恢复,复原”,H项的safeguard“保护,防卫”和M项的treat“对待,治疗”可知,正确答案为G项的restore“恢复,复原”。 备选项中其他选项均与文意不符,故排除。