单项选择题

Every year the continents get back ______.

A．the same amount of water as is lost to evaporation
B．less water than that which is lost to evaporation
C．more water than that which is lost to evaporation
D．different amounts of water based on weather conditions
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单项选择题
The word precipitation (Line 6, Para. 2) probably means ______.
A．the evaporation of water from the land
B．the water reserves on land
C．the unevenly-distributed rain and snow falls
D．water falling in the form of rain and snow
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