◎ 题干
Home delivery or online shopping, ________ to all, makes it available for us to buy various
goods conveniently. 
[      ]
A. known          
B. knowing          
C. to be known       
D. having known
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Home delivery or online shopping, ________ to all, makes it available for us to buy various goods conveniently.[ ]A. known B. knowingC. to be knownD. having…”主要考查了你对  【过去分词】  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。