单项选择题

A．she has not heard of Prof. Johnson.
B．She has not heard of Prut. Johnson" s brother.
C．She is a good friend of Prof. Johnson’’s.
D．She does not know Prof. Johnson’’s brother.
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arose
单项选择题
The author hopes to have the current situation in sports improved by________.
A．regulating the relationship between players and referees
B．calling on players to use clean language on the court
C．raising the referees’’ sense of responsibility
D．changing the attitude of players on the sports field
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