单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
Why has the woman brought up the subject snowflake

A．She has never seen snow before.
B．She is conducting research on snow.
C．She wants to make artificial snow.
D．She has been reading about snow.

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单项选择题

单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation. Why has the woman brought up the subject snowflake 您的浏览器不支持 audio 元素。