当提及六级听力时，尤其是英语六级真题听力，我们不禁会想起那些考验英语学习者听力理解能力的挑战。作为英语六级考试的重要组成部分，六级听力部分不仅要求考生能够捕捉和识别出基本的语言信息，更需要他们在有限的时间内对复杂的语境进行准确理解，并快速作出反应。小编为大家整理了2021年12月英语六级真题听力第二套Passage 1的内容，希望能对您有所帮助！

英文原文

Passage 1

短文1

The saying "blind is a bat" simply isn't correct. The truth is that all, one hundred and one 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.

“蝙蝠是瞎子”这种说法并不正确。事实上，所有一百零一种蝙蝠都能看到，而且它们的视力通常相当好，尽管不如其他夜间狩猎动物那么出色。蝙蝠主要分为两大类，它们被认为是从同一个共同祖先独立进化而来的。

The first group, known as megabats, are mostly medium sized or large bats who eat fruits, flowers, and sometimes small animals or fish. 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.

第一类是大型蝙蝠，也被称为果蝠，它们主要是中型或大型蝙蝠，以水果、花朵为食，有时也吃小动物或鱼。这些种类的蝙蝠有独特的视觉中心和大眼睛。它们利用视觉和嗅觉来捕捉猎物。例如，飞狐在白天不仅视力好，还能区分颜色。它们实际上依赖白天的视力，在没有月光的夜晚无法飞行。

The second group, called microbats, are smaller in size and mostly eat insects. 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.

第二类是小型蝙蝠，也被称为微蝠，体型较小，主要以昆虫为食。这些种类的蝙蝠使用回声定位来找到路线和识别食物。科学家已经证明，尽管它们的眼睛发育不完全且很小，但这些蝙蝠在白天仍然能看到东西。

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.

当我们考虑这些蝙蝠的夜间生活方式时，我们会发现它们必须对光线的变化保持敏感，因为这是它们感知何时开始狩猎的方式。此外，微蝠还使用视觉进行长距离旅行，这超出了回声定位的范围。

So the truth is, there are no bats which are naturally blind. 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.

所以事实是，没有蝙蝠是天生看不见的。有些种类的蝙蝠因为适应特定的生活方式，所以更多地使用听觉而不是视觉，但它们的眼睛仍然是有功能的。

Questions 9 to 11 are based on the passage you have just heard.

问题9至11题基于您刚刚听到的文章。

Question 9: What do we learn about mega bats?

问题9：我们了解到关于大型蝙蝠的哪些信息？

Question 10: How do micro bats find their way and identify food?

问题10：小型蝙蝠是如何找到路线并识别食物的？

Question 11: Why do some species of bats use their sense of hearing more than their eyes?

问题11：为什么有些种类的蝙蝠更多地使用听觉而不是视觉？