单项选择题

Questions 11-14 are based on the following conversation. You now have 20 seconds to read the questions 11-14. According to the conversation, what is the likely use for the beads

A．Medical research.
B．Ballpoint pens.
C．Children’s games.
D．Jewelry settings.

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单项选择题

单项选择题

Questions 11-14 are based on the following conversation. You now have 20 seconds to read the questions 11-14. According to the conversation, what is the likely use for the beads 您的浏览器不支持 audio 元素。