【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(dāng)涉及現(xiàn)代通信，網(wǎng)絡(luò)安全一直是一個(gè)主要擔(dān)心的問題。A. concern關(guān)心；令人擔(dān)憂的事實(shí)(或情況；B. advantage優(yōu)勢；C. opportunity機(jī)會；D. solution解決。網(wǎng)絡(luò)安全一直是現(xiàn)代通信的一個(gè)主要擔(dān)心的問題。故選A。

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