单项选择题

A．Brush your teeth right before you go to bed in the evening.
B．Have as few of your teeth pulled out as possible.
C．Have your teeth X-rayed at regular intervals.
D．Clean your teeth shortly after eating.
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单项选择题
A．It’’s easy to prepare.B．It’’s tasty and healthful.C．It’’s exotic in appearance.D．It’’s safe to eat.
A．It’’s easy to prepare.
B．It’’s tasty and healthful.
C．It’’s exotic in appearance.
D．It’’s safe to eat.
单项选择题
A．Mark doesn’’t like water.B．Mark doesn’’t belong here.C．Mark is like a fish.D．Mark is in this class.
A．Mark doesn’’t like water.
B．Mark doesn’’t belong here.
C．Mark is like a fish.
D．Mark is in this class.
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