单项选择题

According to the passage, Greenwich Mean Time ______.

A．provides a common time for all parts of the world
B．is calculated from the sun
C．is the 12th of the 24 time zones
D．was named after an international conference

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热门试题

单项选择题

The author mentions all of the following ways to measure time EXCEPT ______.

A．sundial
B．hourglass
C．electric clock
D．mechanical clock

单项选择题

Which of the following is the best title for this passage

A．The development of Universal Time.
B．Different ways to measure time.
C．Why we measure time the way we do.
D．How the calendar came into being.