We were all eager to express our own opinion，but strange enough，no one was （）to break the ice.

An advantage the South had over the North was its（）.

A.great mineral resources
B.great number of railroads
C.manpower
D.superior military leadership

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we can （）other people around us and become wiser.

A.pick up
B.learn from
C.graduate from
D.different from 

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