单项选择题

What is the woman studying

A．The basic structure of atoms.
B．The basic structure of molecules.
C．The basic structure of neutron.
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单项选择题
A．He’ll phone the caller at four o’clock.B．He’s out of his office.C．he’ll be on the phone at onc
A．He’ll phone the caller at four o’clock.
B．He’s out of his office.
C．he’ll be on the phone at onc
填空题
Everyday→Every day
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