Question:
Goal: Maximize space in a deep shelf.

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Stack different sized boards on each other to create stair effect.

Question:
Goal: How to mix a carton of juice before serving it

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Take the carton in one or two hands, and keep it closed. Shake it firmly to make the contents mix together.

Question:
Goal: To make a seam completely flat before sewing it, you can

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Use an iron to flatten the steam and make it able to be sewed