26.  An effect can become a cause, reinforce the original cause and producing the same effect in an intensified form, and so on indefinitely.
  • 1、
【正确答案】 1、B。根据句意,an effect can become a cause和reinforce the original cause不是并列关系,这样句子存在谓语重复问题,应该将reinforce变为-ing形式,与后面的producing the same effect保持形式上的一致。此处非谓语动词表伴随。    
【答案解析】