Whatisagenerallyacknowledgedasthemostpowerfuladvertisingmediumandreachesabroadspectrumofconsumers.（）
At each of its 20 buildings at its 200-acre campus in Raleigh, North Carolina, SAS Institute provides coffee break rooms stocked with free soda, fresh fruit, M&Ms and pastries.
The goods are packed in cartons interlined with________ material.