单项选择题

A．Artificial hearts.
B．Telescopes.
C．Microscopes.
D．Radio telescopes.
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单项选择题
A．The first group.B．The second group.C．The last group.D．All the three groups.
A．The first group.
B．The second group.
C．The last group.
D．All the three groups.
单项选择题
How does the man feel about the woman’s decision
A．Patient.
B．Surprised.
C．Worried.
D．Irritated.
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