单项选择题

Ice skates manufactured entirely of iron were first sold in the 1800's.

A．mainly
B．successfully
C．solely
D．routinely
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单项选择题
His strange behavior had greatly ______ me and my friends as well that evening.
A．perplexed
B．exhausted
C．exclaimed
D．exceeded
单项选择题
I could never spend the time that he does poring over sports magazines, compiling intricate lists, and calculating averages.
A．delicate
B．incomprehensible
C．meaningless
D．complicated
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