单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Over 100.
B．Over 150.
C．Over250.
D．Over 350.

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Esperanto can be considered as a neutral language because it belongs to ______.

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The writer discovered Esperanto while doing ______ on foreign language learning.

Passage One Questions 26 to 28 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。