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What was remarkable as the  development of the compact disc has been the use of the new technology to revitalize ,in better sound of than was ever before possible , some of the classic recorded performance of the pre—LP era .

A what was as remarkable as the development of the compact disc

B The thing that was as the remarkable as developing the compact disc

C No less remarkable than the development of the compact disc

D Developing the compact has been none the less remarkable than

E Developing of the compact disc has been no less remarkable as   

答案：C 为什么不能是A

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考的是parallelism平行结构，目的是比较development 和use，由No less...than引起的倒装。

A不对是因为：

1. What引导是多余的，而且不符合比较development和use所需要的平行结构

2. What 的谓语动词was与主句的has been在时态上不一致