十万个为什么·科学启蒙30篇（3）

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小苏打和醋为什么会冒泡

When I mix baking soda and vinegar in my kitchen, tiny bubbles appear right away.
The fizzing sound tells me a quick change is happening inside the cup.
I can feel the cup get cooler as the mixture fizzes and bubbles rise.
My mom says this reaction helps clean sticky spots on our sink.
We use it to unclog the drain when water flows too slowly down the pipe.
It’s safe to try at home if an adult watches me carefully.
The bubbles stop when all the baking soda has reacted with the vinegar.
I always wear goggles because splashes might sting my eyes a little.
This simple mix teaches me how everyday things can work together in fun ways.
After cleaning, I rinse everything well so no sour smell stays behind.

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

My mom says this reaction helps clean sticky spots on our sink. 妈妈说这个反应能帮我们清理水槽上黏糊糊的污渍。
It’s safe to try at home if an adult watches me carefully. 只要大人仔细看着我，就可以在家安全尝试。
I always wear goggles because splashes might sting my eyes a little. 我总是戴护目镜，以防飞溅的液体刺激眼睛。

这篇中文题目最接近哪一句？小苏打和醋为什么会冒泡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？我在厨房里把小苏打和醋混在一起，立刻就冒出许多小气泡。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） Baking Soda and Vinegar Make Bubbles How to cook noodles A maths worksheet

My mom says this reaction helps clean sticky spots on our sink.

My mom says this reaction helps clean sticky spots on our sink.

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：My mom says this reaction helps clean sticky spots on our sink.