【答案解析】[听力原文]
Thank you for visiting the Gemstone History Center. This facility exhibits over 1,000 specimens of minerals from the Sierra Madre Mountains and from different countries. So you will see uncut rubies and sapphires from sources all over the world. And our stunning varieties of minerals, many of which glow when viewed under a special light, are sure to amaze you. We encourage you all to touch and handle these large stones as you make your way around the center, Our tour will last about an hour, and afterward you can visit the gift shop. Now let"s get started.
[解析] 综合理解题 人物身份
本题是询问说话者的身份，不要漏听与身份和职业有关的表达。介绍中提到“Thank you for visiting the Gemstone History Center.”，即欢迎参加宝石历史中心，最后说“Our tour will last about an hour...Now let"s get started.”，即参观时间约1个小时，现在开始游览，由此可知说话者的身份是导游，故正确答案是B. A tour guide。
单选题
What does the speaker say about the facility?
【正确答案】
C
【答案解析】[解析] 细节题 提及
本题是询问说话者提到的关于宝石历史中心的信息，注意听与题目的核心词facility相关的部分。介绍中提到“This facility exhibits over 1,000 specimens of minerals from...different countries”，即该中心展示了来自不同国家的1000多个矿物标本，故正确答案是C. It displays minerals from around the world.。
单选题
What does the speaker say visitors can do?
【正确答案】
D
【答案解析】[解析] 细节题 特定细节
本题是询问说话者提到的允许游客做的事情，注意听与题目中的核心词visitors can do有关的内容。介绍中提到“We encourage you all to touch...stones...”，即鼓励游客去摸一下宝石，故正确答案是D. Touch some displayed items。