英语听力精选进阶版 7338（在线收听）

在南冰洋海域里，一种诡异鸭叫声在过去50年里一直困扰着科学家们。不过据最新一篇发表在《皇家学会报告生物学报》里的文章称，此秘密已被破解。

This is the noise that's puzzled scientists for more than 50 years. The mysterious sound can be heard in the winter in the seas around Antarctica and Australia.

It's nicknamed "the bio-duck" by those who think it sounds like a duck quacking.

Now researchers say acoustic recorders attached to two Antarctic minke whales have revealed that the bizarre noise is the animal's underwater chatter.

Scientists say solving this long-standing mystery will help them to learn more about these little-studied mammals and help them to establish where the whales can be found.

Quiz 听力测验

1. When can the strange noise be heard?

In the winter.

2. Which kind of animal is actually making the strange quacking sound?

Minke whales.

3. What informal name was given to the sound?

"Bio-duck".

4. Which word in the text means 'animals which drink milk from their mothers' body when young'?

Mammals.

Glossary 词汇表

puzzled 困扰了

nicknamed 被叫做

quacking （鸭子）嘎嘎叫声

acoustic recorders 声动录音仪

bizarre 怪异的

mammals 哺乳动物