Question 11 is based on the passage you have just heard.

Passage One

听力原文

       The saying “blind is a bat”, simply isn’t correct. The truth is that all 1,100 bat species can see and often their vision is pretty good, although not as excellent as other night-hunting animals.

       There are two main groups of bats which are believed to have evolved independently of each other, but both from a common ancestor. The first group, known as megabats, are mostly medium-sized or large bats who eat fruits, flowers and sometimes small animals or fish. (9) [These species have distinctive visual centers and big eyes.] They use senses of vision and smell to capture their prey. For example, flying foxes not only see well during daylight, but can also distinguish colors. They actually rely on their daylight vision, and cannot fly during the night with no moonlight. The second group called microbats, are smaller in size and mostly eat insects. (10) [These species use echolocation to find their way and identify food.] Scientists have proven that despite their poorly developed small eyes, these bats still can see during the day. When we consider the nightly lifestyle of these bats, we will see they have to be sensitive to the changing light levels, because this is how they sense when to start hunting. Moreover, vision is used by microbats to travel over long distances, beyond the range of echolocation.

       So, the truth is, there are no bats which are naturally blind. (11) [Some species use their sense of hearing more than their eyes as a matter of adaptation to a particular lifestyle,] but their eyes are still functional.

11. Why do some species of bats use their sense of hearing more than their eyes? （为什么有些种类的蝙蝠更多地利用听觉而不是眼睛？）

解析：B。录音中提到，一些种类的蝙蝠更多地利用听觉而不是视觉来适应特定的生活方式（adaptation to a particular lifestyle）。B项内容符合题意，其中adapt对应是录音中的adaptation，a particular lifestyle原词复现，故B项为正确答案。

错项排除：录音中一再提到蝙蝠不是天生的瞎子，A项的natural absence of vision与此内容相悖，故排除。C项利用录音中的travel over long distances进行干扰，但这里讲的是微蝙蝠利用视觉进行远距离移动，与题干无关，故排除。D项的ever-changing weather在录音中无依据，故排除。