单项选择题

A．Being too hot.
B．Being delayed.
C．Catching the beach ball.
D．Getting up early.
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单项选择题
A．In a clothing store.B．In a garden.C．At a cleaner’’s.D．At a printing shop.
A．In a clothing store.
B．In a garden.
C．At a cleaner’’s.
D．At a printing shop.
问答题
ECVAM believes that the refined in vitro test method can reduce by halve __________used for regulatory testing within a decade.
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