作者：本质教育 李泽宇

Official Guide是每一个考GMAT的学生必须具备的书籍。里面的每一道题目最好做2遍以上（尤其是错题，一定要好好分析体会）。很多同学告诉我，OG的答案不够清楚。事实上，OG的有些讲解试图绕开一些需要补充的知识，例如什么是溯因推理，分词的用法等等，因此往往显得不够清晰。因此，我想我每天抽出一些时间，写一道OG的题目，帮助大家学习。

6. While Noble Sissle may be best known for his collaboration with Eubie Blake, as both a vaudeville performer and as a lyricist for songs and Broadway musicals, also enjoying an independent career as a singer with such groups as Hahn's Jubilee Singers.
A. and as a lyricist for songs and Broadway musicals, also enjoying
B. and writing lyrics for songs and Broadway musicals, also enjoying
C. and a lyricist for songs and Broadway musicals, he also enjoyed
D. as well as writing lyrics for songs and Broadway musicals, he also enjoyed
E. as well as a lyricist for songs and Broadway musicals, he had also enjoyed

这是一道简单题（600分题）

首先看懂句子后稍微分析一下结构就知道前面是while引导的状语从句，后面需要主句，划线部分的also enjoying an…缺乏谓语。因此快速浏览，同样的错误可以排除A,B

把C和D对比就可以发现C用了“and”而D用了“as well as”，回过去一看，有both

Both…and…是固定的平行对称结构，不能更改（这个语法前面已经讲过了），因此D错误，同样的理由排除E

选择C.