reaction可数吗
reaction是不可数名词；
reaction
n.反应;回应;(对旧观念等的)抗拒;生理反应;副作用；
复数 reactions；
Peoples reaction to the film has varied greatly.
人们对这部影片的反应大不一样。
What is the City\'s reaction to the cut in interest rates?
伦敦金融界对削减利率的反应如何？
It set off a chain reaction in the international money markets.
这一事件在国际金融市场上引起了连锁反应。
My immediate reaction was one of shock.
我当即的反应是大吃一惊。