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单项选择题

A．It has something to do with the temper-control of players.
B．They show threatening attitude and frighten their opponents.
C．Their faces can turn red when they are in red uniforms.
D．The reason is unknown.
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热门试题

单项选择题A．Only a few people will receive junk mails.B．People cannot stop junk mails.C．Only individuals are under the threat of junk mails.D．Junk mails are threatening the cyber space.

A．Only a few people will receive junk mails.
B．People cannot stop junk mails.
C．Only individuals are under the threat of junk mails.
D．Junk mails are threatening the cyber space.

单项选择题A．Daughter and father.B．Student and teacher.C．Secretary and manager.D．Patient and doctor.

A．Daughter and father.
B．Student and teacher.
C．Secretary and manager.
D．Patient and doctor.