6．The officials have expressed their _________over the safety of the mine workers trapped in the mine．（　　）
A．concernB．appreciationC．appetiteD．reward

分析 官員們已經(jīng)表達(dá)了他們對困在礦井下的礦工的安全的擔(dān)心．

解答 答案：A
解析：A：擔(dān)心；B：感激；欣賞；C：食欲；胃口；D：獎勵．根據(jù)句意"官員們已經(jīng)表達(dá)了他們對困在礦井下的礦工的安全的擔(dān)心"及所給選項分析可知，本題答案為A選項；其余選項均不符合題意．

點評 本題考查名詞的詞義辨析，做此類題目時一定要清楚各個選項的含義及用法，并結(jié)合句意及其它要求選出正確選項．

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