单项选择题

Passage 3
Questions 17 to 20 are based on the passage you have just heard.
About how many different languages are there in the world（）

A．About 280.
B．About 2008.
C．About 2800.
D．About 2900.

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单项选择题

A．The world’s major languages.
B．Cultural differences.
C．Arabian desert life.
D．Language and culture.

单项选择题

A．He gave half of it to his friend.
B．He threw half of it away.
C．He kept all the paper.
D．He threw half of it away and kept the rest.

Passage 3 Questions 17 to 20 are based on the passage you have just heard. About how many different languages are there in the world（） 您的浏览器不支持 audio 元素。