单项选择题

For safety, all passengers are required to review this card and follow these instructions when needed.

A．为了安全，请各位乘客反复阅读本卡片，务必按照各项规定执行。
B．为了保险起见，请各位乘客务必阅读本卡片，并参照相关内容认真执行。
C．为了保险起见，要求所有乘客在需要时都能看到这张卡片及以下这些内容。
D．为了安全，要求所有乘客仔细阅读本卡片各项内容，必要时照其执行。

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热门试题

单项选择题

This passage mainly offers information about （）

A．how to prepare documents for traveling with Greyhound
B．how to purchase a Greyhound ticket and travel with it
C．how to make your trip with Greyhound interesting
D．how to travel from the U. S to Canada and Mexico

单项选择题

When people are traveling to Canada or Mexico, a passport is a must for（）

A．American citizens
B．Japanese citizens
C．Mexicans citizens
D．Canadians citizens