30. What was as remarkable as the development of the compact disc has been the use of the new technology to revitalize, in better sound than was ever before possible, some of the classic recorded performances of the pre-LP era.
A. What was as remarkable as the development of the compact disc
B. The thing that was as remarkable as developing the compact disc
C. No less remarkable than the development of the compact disc
D. Developing the compact disc has been none the less remarkable than
E. Development of the compact disc has been no less remarkable as 
 
绝对错误习语（一级排除 D, E )
 no less ….than  不能用 no less .. as 或者 none the less … than 
 
平行结构（一级排除 A, B-时态 )
时态一致，用名词对名词，时态的一致性。插入语的时态可以不一致，此处表示和过去比较。
cause inconsistencies in verb tense: the use of the new technology cannot logically be described by both the present perfect has been and the past was.
关注系表结构, 系表结构等于是并列结构, 时态要一致, 概念要对等
 
系表结构的平行  A is/has been B， A/B 要平行对等 ， 逻辑意思上的对等。。。
developing the compact disc is not parallel to the use of new technology to revitalize ... performances