【正确答案】 D

【答案解析】[听力原文] 29-30 [29] Many organizations around the United States hold canned food drives to help those in need. One Pennsylvania faith-based relief organization holds a drive with a twist: volunteers can the food themselves. Each winter, the Mennonite Central Committee sends a meat-canning truck on a tour of North America. The truck is equipped with industrial-size pressure cookers, and each community it visits mounts an all-out effort to can as much meat as possible before the truck moves on to the next stop. About 30 people crowd into a small barn on a farm just outside of Freeport, Illinois. [30] They work in shifts, from 5 in the morning until 10 at night. [29] Over the course of two days, they cook and can over 6,300 kilos of turkey meat to be sent to hungry people all over the world. [解析] 新闻提到，美国许多宗教组织罐装食品帮助全世界饥饿和需要帮助的人们。故答案为B。 [点睛] 主旨大意题。这种题应注意听新闻的开头和结尾。

【正确答案】 C

【答案解析】[解析] 新闻提到，志愿者从早上5点工作到晚上10点，实行倒班制。故答案为C。 [点睛] 数字计算题。选项A和B为干扰项，它们都只是时间点。