单项选择题

A．Reading.
B．Writing.
C．Speaking.
D．Listening.
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单项选择题
All of the following are parts of the Sun’’s atmosphere EXCEPT the ________.
A．corona
B．chromosphere
C．photosphere
D．core
单项选择题
A．Father and daughter.B．Mother and son.C．Teacher and pupil.D．Doctor and patient.
A．Father and daughter.
B．Mother and son.
C．Teacher and pupil.
D．Doctor and patient.
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