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单项选择题

A．How to care for precious metals.
B．A standard unit for measuring weight.
C．The value of precious metals.
D．Using the metric system.
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热门试题

单项选择题A．A bus station.B．An airport.C．A super highway.D．A train station.

A．A bus station.
B．An airport.
C．A super highway.
D．A train station.

单项选择题A．The Englishmen’’s habits.B．The Englishmen’’s accent.C．The Englishmen’’s character.D．The Englishmen’’s teaching styles.

A．The Englishmen’’s habits.
B．The Englishmen’’s accent.
C．The Englishmen’’s character.
D．The Englishmen’’s teaching styles.