题目

化合物丙有如下反应得到 ，丙的结构简式不可能是( ) A．CH3CH2CHBrCH2Br B．CH3CH(CH2Br)2 C．CH3CHBrCHBrCH3 D．(CH3)2CBrCH2Br 答案：B She was ________ pleased when she saw the painted fence that she gave Tom a large cake． [　　] A．so B．such C．too D．very