十万个为什么·科学阅读30篇（1）

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为什么手指泡水会起皱？

Wrinkling isn’t just passive swelling—it’s an active nervous system response controlled by blood vessel constriction.
Within five minutes of soaking, nerves signal blood vessels beneath the skin to narrow, pulling the outer layer downward.
This creates grooves that improve grip on wet or slippery objects, like wet fruit or river stones.
People with nerve damage in their hands don’t develop wrinkles, proving it’s not just water absorption.
Studies show wrinkled fingers drain water faster from surfaces, enhancing tactile sensitivity underwater.
The pattern resembles tire treads, channeling water away rather than trapping it between skin ridges.
This trait likely offered evolutionary advantage to early humans gathering food in streams or rainy forests.
Scientists now explore whether similar micro-texturing could improve waterproof gloves for surgeons or divers.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Studies show wrinkled fingers drain water faster from surfaces, enhancing tactile sensitivity underwater. 研究表明，起皱的手指能更快排走表面水分，从而提升水下触觉敏感度。
Scientists now explore whether similar micro-texturing could improve waterproof gloves for surgeons or divers. 科学家正探索类似微纹理能否用于改进外科医生或潜水员的防水手套。
Wrinkling isn’t just passive swelling—it’s an active nervous system response controlled by blood vessel constriction. 起皱不只是被动吸水膨胀，而是由血管收缩调控的主动神经系统反应。

这篇中文题目最接近哪一句？为什么手指泡水会起皱？一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？起皱不只是被动吸水膨胀，而是由血管收缩调控的主动神经系统反应。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） Why Do Your Fingers Wrinkle in Water? How to cook noodles A maths worksheet

Studies show wrinkled fingers drain water faster from surfaces, enhancing tactile sensitivity underwater.

Studies show wrinkled fingers drain water faster from surfaces, enhancing tactile sensitivity underwater.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Studies show wrinkled fingers drain water faster from surfaces, enhancing tactile sensitivity underwater.