2021年12月英语六级(第2套)听力真题 短文(1)

The saying "blind as a bat" simply isn't correct.

“像蝙蝠一样瞎”的说法根本不正确。

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.

事实上，所有1100种蝙蝠都能看到东西，而且它们的视力通常都很好，尽管不如其他夜间狩猎动物好。

There are two main groups of bats, which are believed to have evolved independently of each other,but both from a common ancestor.

蝙蝠有两大类，据信它们是独立进化而来的，但都是从一个共同的祖先进化而来。

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

第一类被称为巨型蝙蝠，大多是中型或大型蝙蝠，它们吃水果、花，有时还吃小动物或鱼。

These species have distinctive visual centers and big eyes.

这些物种有独特的视觉中心和大眼睛。

They use senses of vision and smell to capture their prey.

它们利用视觉和嗅觉捕捉猎物。

For example,Flying Foxes not only see well during daylight, but can also distinguish colors.

例如，飞狐不仅在白天能见度很好，而且还能分辨颜色。

They actually rely on their daylight vision and cannot fly during the night with no moonlight.

它们实际上依靠白天的视觉，在没有月光的夜晚不能飞行。

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

第二类称为微蝙蝠，体积较小，大多以昆虫为食。

These species use echolocation to find their way and identify food.

这些物种使用回声定位来找到它们的路并识别食物。

Scientists have proven that despite their poorly developed small eyes,these bats still can see during the day.

科学家已经证明，尽管蝙蝠的小眼睛发育不良，但它们在白天仍然可以看到东西。

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.

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不断变化的光照水平敏感，因为这是它们感知何时开始狩猎的方式。

Moreover,vision is used by micro bats to travel over long distances,beyond the range of echolocation.

此外，微蝙蝠利用视觉进行远距离旅行，超出回声定位的范围。

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

所以事实是，没有蝙蝠是天生失明的。

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.

有些物种利用听觉而不是眼睛来适应特定的生活方式，但它们的眼睛仍然有功能。

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

问题9至11基于您刚才听到的文章。

9. What do we learn about mega bats?

9.我们对巨型蝙蝠有何了解？

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

10.微型蝙蝠如何找到路并识别食物？

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

11.为什么有些种类的蝙蝠使用听觉多于眼睛？

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