answer: #Person1# and #Person2# sees pupils picking up the plastic bags. #Person1# thinks some plastic bags have viruses and may do harm to their health. #Person2# agrees.
documents: #Person1#: What are the pupils doing there? They're picking up the plastic bags on the street, but the plastic bags are so dirty.
  #Person2#: They are doing that to remind people to protect the environment. You know, the white pollution is so serious these years.
  #Person1#: Of course I know, but the pupils are young and there must be some viruses which are bad for them. Our hospital has many children falling sick because they pay a little attention to cleaning.
  #Person2#: Sounds reasonable. The school may have told them what kinds of bags can't be picked up.