A．It will be rooted out in a few years.
B．It benefits net users in many ways.
C．It invades the privacy of net users seriously.
D．It exists in almost all the websites.

A．The mih'tary sector.
B．The IT sector.
C．The housing sector.
D．The financial sector.

A．Because she stopped working after she was hurt.
B．Because she failed to make some of her mortgage payments.
C．Because she failed to convince officials she was entitled to a pension.
D．Because she failed to pass doctors' exams.