Question:
Goal: How do you sharpen a knife in a rural area?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Take the blade end of the knife and use on a stone water fountain, sliding it back and forth to rub off the burrs.

Question:
Goal: Enhance nutrition value of pesto.

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
Mix in carrot green tops.

Question:
Goal: To properly boil white rice for eating,

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
measure out two cups of water for one cup of rice, and boil and cover it.