单项选择题

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

A．Go through a health check.
B．Take little luggage with them.
C．Arrive early for boarding.
D．Undergo security checks.

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单项选择题

单项选择题

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。