单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
There are ______ netizens in the United State.

A．123 million
B．123 billion
C．more than 123 million
D．more than 123 billion

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. There are ______ netizens in the United State. 您的浏览器不支持 audio 元素。