A. little B. unanswered C. detect D. inevitably

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问题    A. little       B. unanswered       C. detect       D. inevitably       E. deep
F. drop       G. useless          H. eventually I. effective       J. address
K. catch       L. adds             M. improve    N. sufficient       O. limited
In September, more than a dozen whales beached themselves in the Canary Islands. Rescuers tried to water down the whales and keep them cool. But all of them【C1】________ died.
Nearby, NATO naval forces were testing echo sounding devices meant to【C2】________ an enemy’s submarines, and public knowledge of the deaths ultimately came to strengthen suspicions of a link between whale distress and loud ocean noises.
The theory is that the mammals seek to escape the roar of the【C3】________. rush toward the surface and in some cases end up going ashore.
For decades, environmentalists have worked to reduce the undersea noise—usually with【C4】________ success, given the growing industrialization and militarization of the oceans. They have filed suits and waged letter-writing campaigns, including a recent petition that asks the United States Navy to【C5】________ its testing of underwater sound equipment.
The discovery by biologists in Hawaii that whales can decrease the sensitivity of their hearing to protect their ears from loud noise【C6】________ another dimension to the debate. Michael Jasny, a senior policy analyst, called the research fascinating and said he hoped it would prove【C7】________ in protecting whale hearing from these threats.
But he characterized the finding as a work in progress that posed many【C8】________ questions.
"A lot more work needs to be done," he said. "Could it be replicated in the wild? It’s a huge question." Even if whales could learn to decrease the sensitivity of their hearing, Mr. Jasny said, that would【C9】________ only a relatively small part of the oceanic noise problem. "It’s important to understand that it’s【C10】________." he said of the proposed method. "It won’t be a silver bullet." [br] 【C6】

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答案 L

解析本句的主语是the discovery，其后的that whales…noise是主语的同位语从句，故空格处填入的动词应为句子谓语。本段提到的新发现(鲸鱼可以通过降低听觉的敏感性来保护耳朵不受噪音伤害)与上文的“人们更加怀疑鲸鱼遇险与海洋噪音之间的联系”不一致，这会增加讨论，所以答案为adds“添加，增加”。

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