Invention can be ________ as it may suddenly begin just by noticing something usual.

Aaccidental Bcareless

Cnecessary Dimaginative

 

A

【解析】A 考察形容詞辨析。Accidental偶然的,careless粗心的;necessary必要的;imaginative虛構(gòu)的,富于想象的;根據(jù)suddenly可知A正確。句意:發(fā)明有時也是偶然的,因為它僅僅開始于注意到了某個平常的某個東西。故A正確。

 

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