【題目】When it comes to modern communication, network safety is always a major ______ .

A.concernB.advantageC.opportunityD.solution

【答案】A

【解析】

考查名詞辨析。句意:當涉及現(xiàn)代通信,網(wǎng)絡(luò)安全一直是一個主要擔心的問題。A. concern關(guān)心;令人擔憂的事實(或情況;B. advantage優(yōu)勢;C. opportunity機會;D. solution解決。網(wǎng)絡(luò)安全一直是現(xiàn)代通信的一個主要擔心的問題。故選A。

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