单项选择题

How many people have been to the moon

A．20.
B．16.
C．2.
D．12.
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单项选择题
What do we learn about the technique for the cloning of human beings
A．Perfect.
B．Inadequate.
C．Undesirable.
D．Insufficient.
单项选择题
What is the place the two speakers are visiting
A．A modern museum,
B．A concert hall.
C．An ancient castle.
D．A royal palace.
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