1 GMAT CAT 0825 S4/15 The proposed urban development zones do not represent a new principle;it was employed in "Operation Bootstrap" in Puerto Rico. a)do not represent a new principle;it b)represent not a new principle,but one that c)are not a new principle;the same one d)are not a new principle,but one that e)are not new in principle;it key B my choice A 我觉得A、B的语法应该都没错，难不成是因为GMAT喜欢not...but固定用法的关系所以选B？望解惑。
两句意思不一样 a)do not represent a new principle;it 没有陈述一个新原理，这个新原理过去曾经在。。。用过 逻辑混乱，既然是新原理怎么回用过 b)represent not a new principle, but one that 陈述了不是一个新原理，而是一个旧原理
