Make an Experiment
What you need:
1.clear bottle(20 oz.)
2.cooking （oil,油）
3.water
What you do:
（Pour,倒） the water into the bottle.
Pour oil into the water
Shake the bottle and watch what （happens,发生）!
This experiment shows that oil and water DON'T （mix,混合）.The oil forms bubbles to stay on （top,顶部） of the water.Try this:Let it sit out for （about,大约） an hour.Do you see （that,宾语从句引导词） the oil and water have separated.