With tears on her face, the lady________ (看着她受伤的儿子被送进手术室).

A．He wouldn’’t see the play as often as she had.
B．He likes the play better than she does.
C．It is greater to see a shorter play.
D．It is worthwhile to see the play over five times.

A．it keeps offending bacteria from reproducing
B．its smell adds to bad breath.
C．it kills some helpful bacteria
D．it affects the normal flow of saliva