科学实验英语听写——Don't touch that!

Don't touch that! — the science test

实验室的指令语言:reaction、substance、degree。听错一步,玻璃就炸。

下面是全部句子，读完可配音频练完整节课。

1. 1Quiet, everyone — today's science test has a bit of danger in it.
2. 2All this apparatus has a use — but touch nothing for now.
3. 3First observation: the white powder is dry, and the acid is not.
4. 4We put a drop of acid on the powder and wait for the reaction.
5. 5See that? The mixed substance is turning green — write that down.
6. 6Keep the two liquids separate, or the effect will be very different.
7. 7Don't get the paste on your fingers — it's sticky and it burns.
8. 8The glass is getting hot — is that right?
9. 9The scale says twice the mass we need — take some out.
10. 10Now a match — one small flame under the glass, and we watch.
11. 11Watch the expansion — the warm air inside needs more room.
12. 12Too much heat and the glass may burst — go up one degree at a time.
13. 13Never put your nose over the bottle — some smells are poison.
14. 14And — there it goes! That, everyone, is why we do small tests first.
15. 15Chemical science is safe when you go slow — and now you've seen why.