A each search area contained three target scents

B there was actually no target scent in the search area

C their dogs were expected to find the scents of red paper 

D some target scents may be labeled with a special mark

58. What was most significant about the experiment, according to Dr Lit?

A The regularity of the false alerts

B The location of the false alerts

C The number of the false alerts

D The timing of the false alerts

59. It can be concluded from the experiment that ____.

A dogs may act in response to their handlers’ bodily signals

B dog handlers are more likely to be distracted than their dogs

C the cooperation between dogs and their handlers is key to success

D well-trained dogs can better understand their handlers’ signals

60. The author thinks that Dr Lit’s findings _____.

A may not be useful in real situations

B should raise our concern in real life

C should be backed up by further evidence

D will be widely applied in the near future