对大量专利的统计分析表明，（）以上的创新问题存在已知解决方案。
A、60%
B、80%
C、90%
D、95%
参考答案：D
Mr Song is ______ our school，that is to say，our school is ______ Mr Song.[ ]
A．in charge of；in charge of
B．in charge of；in the charge of
C．in the charge of；in charge of
D．in the possession of；in possession of
地脚
