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单选题：__________.
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After the surgery，Wayne felt_____．
After the surgery，Wayne felt_____．A．completely recovered B．bad every single day
All the people assembled at Mary’s house．
All the people assembled at Mary’s house． A．collected B．fixed C．asserted D．assi
She has been the subject of massive media coverage.
She has been the subject of massive media coverage.A．extensive B．negative C．exp
求抛物线在点（－2，4）处切线的斜率，并求切线方程和法线方程，
求抛物线在点（－2，4）处切线的斜率，并求切线方程和法线方程，
过曲线y＝lnx上点(1，0)处的法线方程是（ ）
过曲线y＝lnx上点(1，0)处的法线方程是（ ）A．x－y－1＝0 B．x＋y－1＝0 C．x－y＋1＝O D．x＋y＋1＝0