◎ 题干
_____ scores of times , but he still couldn’t understand it .
[     ]
A.Having explained              
B.Having been explained
C.Though it was explained        
D.It was explained
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“_____ scores of times , but he still couldn’t understand it .[ ]A.Having explainedB.Having been explainedC.Though it was explainedD.It was explained…”主要考查了你对  【并列连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。