During the （）test, students must select answers.

A．telling them what to do
B．showing them how to do it
C．making them obey the order
D．beating them down to lower prices

A．A strict law against computer crimes must be enforced
B．Companies usually hesitate to uncover computer crimes to protect their reputation
C．Companies will guard against computer crimes to protect their reputation
D．Companies need to impose restrictions on confidential information