科学素养与生活应用·英语30篇（2）

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自修复混凝土如何利用细菌修补裂缝

Self-healing concrete contains special bacteria that remain dormant until water enters a crack.
When moisture arrives, the bacteria activate and produce limestone to fill the gap naturally.
This biological process extends the material’s lifespan without human intervention or extra tools.
Engineers embed nutrient capsules alongside microbes so they survive for decades inside the concrete.
Unlike traditional repairs, this method works underground or inside bridges where access is difficult.
Studies show it reduces maintenance costs by up to thirty percent over twenty years.
The bacteria used are harmless to humans and thrive only in alkaline concrete environments.
Researchers continue optimizing strains to respond faster to different crack widths and temperatures.
Cities like Rotterdam now use this concrete in bike paths and canal walls.
It represents a growing trend where biology and civil engineering combine for sustainable infrastructure.

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

Self-healing concrete contains special bacteria that remain dormant until water enters a crack. 自修复混凝土含有特殊细菌，遇水开裂时才会被激活。
This biological process extends the material’s lifespan without human intervention or extra tools. 这种生物过程无需人工干预或额外工具，即可延长材料寿命。
Researchers continue optimizing strains to respond faster to different crack widths and temperatures. 研究人员正持续优化菌种，使其能更快响应不同宽度的裂缝和温度变化。

这篇中文题目最接近哪一句？自修复混凝土如何利用细菌修补裂缝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？自修复混凝土含有特殊细菌，遇水开裂时才会被激活。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） How Self-Healing Concrete Repairs Cracks Using Bacteria How to cook noodles A maths worksheet

Self-healing concrete contains special bacteria that remain dormant until water enters a crack.

Self-healing concrete contains special bacteria that remain dormant until water enters a crack.

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：Self-healing concrete contains special bacteria that remain dormant until water enters a crack.