单项选择题

A．does
B．do
C．has
D．have
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单项选择题
A．inB．onC．atD．from
A．in
B．on
C．at
D．from
单项选择题
What is the newly developed drug for
A．To produce a better and safer pregnancy.
B．To enable woman to have multiple births.
C．To balance the hormone.
D．To test whether a woman is pregnant or not.
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