Question:
Goal: how do you condition a runner?

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
make them practice run.

Question:
Goal: wok

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
can be used to boil jar for canning

Question:
Goal: a ribbon

Which of the following methods is more reasonable for accomplishing this goal?
Answer:
can hold books together