At present, puter knowledge has bee requirement as the ability to read and write.
A. so basic a
B. so a basic
C. as basic a
D. as a basic
网友回答
A. so basic a
B. so a basic
(答案→)C. as basic a
D. as a basic
解析：句意，现在，对电脑知识的需求已经变得和对阅读和写作能力的需求一样基本了。在肯定句中只能用as...as.．．，排除A和B，as之后要直接接形容词，故排除D，故选C。