It can be inferred from the passage that global warming is______.

A．We have been changing the climate with thoughtless actions for decades.
B．We have been handling machines with poor skills for decades.
C．We have been following a misleading chapter about the earth for decades.
D．We have been mistaken in the belief in developing the agricultural infrastructure.

A．the police' s collecting evidences on the site of the crime
B．experienced police investigators' rating information in the crime files
C．information collected by the police in police interviews
D．information provided by the public who 'discovered the crime