单项选择题

A．To produce them more cheaply.
B．To keep them a uniform size.
C．To make them lighter.
D．To make them perfectly round.
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单项选择题
A．To have a big dinner.B．To try French food.C．To go to the new restaurant.D．To stay at home.
A．To have a big dinner.
B．To try French food.
C．To go to the new restaurant.
D．To stay at home.
单项选择题
A．Medical research.B．Ballpoint pens.C．Children’s games.D．Jewelry settings.
A．Medical research.
B．Ballpoint pens.
C．Children’s games.
D．Jewelry settings.
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