【正确答案】 B

【答案解析】[听力原文]
   W: Thank you for shopping at Hello Department Store. You may stop me at any time if you wish to exit the elevator. You are leaving the first floor, where you can find and sample a wide range of perfume and makeup. We are approaching the second floor, home to our special woman's boutiques. Now, the third floor, with 14 shoe, handbag, and accessory providers. One guest has requested the fourth floor, our floor with fashionable clothing for teenage boys and girls. Thank you. Continuing, we are approaching the fifth floor, which is where you'll find designer items for men and our shoe repair department. This is the sixth floor now, with our home items and furniture, as well as a toy store and a store with exercise equipment. We will soon be approaching our final destination, the seventh and final floor, with our four-star afternoon tea and dining room. Ladies, please enjoy your meal. Going down, sir?
选项A错误，说话者没有在销售商品。选项B正确，她负责欢迎人们乘电梯和报楼层号。选项C错误。选项D错误，她没有在保护什么。