单项选择题

A．It receives more nutrients than it can absorb.
B．It becomes oversaturated with water.
C．It loses the ability to support insect life.
D．It loses nutrients that aren’t replaced.
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单项选择题
A．How historical events affected an art movement.B．How artists can influence economic conditions.C．Why a certain art movement failed to become popular.D．How valuable paintings were lost during wartime.
A．How historical events affected an art movement.
B．How artists can influence economic conditions.
C．Why a certain art movement failed to become popular.
D．How valuable paintings were lost during wartime.
单项选择题
A．He studies engineering.B．He has only recently become interested in philosophy.C．He wasn’t at the lecture at that time.D．He thinks the woman should also attend Prof. Warner’s class.
A．He studies engineering.
B．He has only recently become interested in philosophy.
C．He wasn’t at the lecture at that time.
D．He thinks the woman should also attend Prof. Warner’s class.
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