这块海绵的弹性很好，按压后能立刻恢复原状。

This sponge has great ___elasticity, returning to its original shape after being pressed.

这项政策具有足够的弹性，可以应对经济波动。

This policy has enough ___elasticity to handle economic fluctuations.

汽油的需求弹性较低，因为即使价格上涨，人们仍然需要开车出行。

The demand ___elasticity for gasoline is low because people still need to drive even when prices rise.