单项选择题

Passage One Questions 26 to 29 are based on the passage you have just heard.

A．Because it is very new.
B．Because it is very popular.
C．Because it is spreading very quickly.
D．Because it is able to hold a lot of things.

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单项选择题

单项选择题

Passage One Questions 26 to 29 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。