人为什么会有头发–第 2 层
15-03-2024 07:00
很多人都想知道人类头上为什么会有头发。
我们的祖先，也就是生活在我们之前的人，身上的毛发都掉光了，而头上的头发似乎真的很实用。一方面，头发可以御寒，保护大脑安全；另一方面，头发还可以防止大脑过热。此外，头发还能吸汗，保护皮肤免受紫外线的伤害。科学家认为，在过去，头发在选择性伴侣时起着重要作用。但如今，帽子可以保护我们的头部，所以头发似乎不再那么重要了。
您可以在三级部分观看原始视频。
为什么科学家认为头发在过去选择性伴侣时起着重要作用？
LEARN 3000 WORDS with CHINESE IN LEVELS
Chinese in Levels is designed to teach you 3000 words in Chinese. Please follow the instructions
below.
How to improve your Chinese with Chinese in Levels:
Reading
- Read two news articles every day.
- Read the news articles from the day before and check if you remember all new words.
Listening
- Listen to the news from today and read the text at the same time.
- Listen to the news from today without reading the text.
Writing
- Answer the question under today’s news and write the answer in the comments.