题目内容
20．Please do homework _____and try not to make any mistakes．（ ）| A． | as carefully as possible | B． | as careful as possible | ||
| C． | more careful | D． | most careful |
分析 请尽可能仔细的做作业，尽量不要犯任何错误．
解答 答案：A．
根据Please do homework _____and try not to make any mistakes，可知这里所填的词应该是修饰动词do的，所以应该用副词形式，选项BCD中 careful 都是形容词，不符合要求，排除掉，选项A中此处应该是as+形容词或副词原级+as结构，又因为do是动词形式，此处应该是副词 carefully 修饰动词do，此处表示"请尽可能仔细的做作业"，故选A．
点评 本题考查固定短语as+形容词原形或副词原形+as possible=as+形容词原形或副词原形+as one can，表示尽可能地…．
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