题目内容

At present, computer knowledge has become ___________ requirement as the ability to read and write.

A.
so basic a
B.
so a basic
C.
as basic a
D.
as a basic

C
试题分析：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。
考点：固定结构考查
点评：在否定句中既可以用not as ...as...也可以用not so...as,而在肯定句中只能用as...as.．．

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Greenpeace works out that 20 to 50 million tons of e-waste are produced globally each year. The components（部件）in many electronic products contain harmful chemicals that pollute ground water and the environment.

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