“Web police” are often able to ______ the exact source of unwanted mailings on the Internet.

A. search 　　　 B. look 　　　　　　 C. determine 　　　 D. see

 

C

 

詞義辨析題。此處的最大干擾項(xiàng)就是A，search表示“搜索”是的用法為search+搜索地點(diǎn)+for+搜索之物；determine在此處符合句意。

 

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