Question

【题目】________ computer lessons, designed for children, is an important qualification for the job.

A.Having studiedB.Having been studiedC.Being studiedD.Had studied

Answer 1

【答案】A

【解析】

考查动名词的完成式。句意：学习过专为孩子设计的计算机课程是担任这项工作的一项重要条件。分析句子结构可知，句子缺少主语，故用非谓语中的动名词做主语，又因study这个动作已完成且是主动的，故用动名词的完成式having done，故选A项。