• A．Booming business of Circuit City
• B．Superior quality of conventional DVD discs
• C．An introduction of the new system Divx
• D．Unlimited or permanent play of Divx discs
  E Disk-play tracking and billing systems
  F Expansion of the titles of Divx discs

Paragraph 6______

A．an automobile
B．an engine
C．a part of an automobile engine
D．an automobile engine

A．they explained the best routes to get to places
B．they listed good places to stay
C．all of their stories were firsthand accounts
D．they told of strange and exotic locales