单项选择题

The coming of the railways in the 1830s ________ our society and economic life.

A．transferred
B．transformed
C．transported
D．transmitted
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单项选择题
_______ in the color of sea water from blue to green seem to be caused by high or low concentration of salt.
A．Variations
B．Evaporations
C．Explorations
D．Explosions
单项选择题
When I took his temperature, it was three degrees above _______.
A．average
B．ordinary
C．regular
D．normal
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