单项选择题

Although South Carolina's mineral resources are abundant, not all of them can be mined lucratively.

A．molten
B．plentiful
C．diverse
D．precious
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单项选择题
Eleven states, including the adjoining states of North and South Carolina, seceded from the United States in the 1860's and formed a southern confederacy.
A．separated
B．neighboring
C．colonial
D．competing
单项选择题
Eleanor Roosevelt's dedication to humanitarian causes won her affection and honor at home and abroad.
A．on the air
B．henceforth
C．nearby
D．in foreign countries
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