单项选择题

How many kinds of devices are mentioned in the passage which can measure time

A．3.
B．4.
C．5.
D．6.
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单项选择题
When was the international conference held which divided the world into 24 time zones
A．In 1770.
B．In 1880.
C．In 1884.
D．In 1894.
单项选择题
The famous scientific law, which explains time, can be best summarized as
A．Disorder decreases with time.
B．Order increases with time.
C．Disorder increases with time.
D．Order decrease with time.
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