—Chinese people are worried about the food they eat these days.
—Yes, the food safety is a serious         in our country. We should try to solve it.
A．subjectB．programC．problemD．opinion
C

試題分析：subject科目；program程序，計劃；problem問題，難題；opinion意見，主張。句意：這些天來中國人很擔(dān)心他們吃的食物�！堑�，食品安全在我國是個嚴(yán)重的問題。我們應(yīng)該努力解決它。計劃語境可知選C。
點(diǎn)評：該題型是屬于英語考試的基礎(chǔ)題型，是必考內(nèi)容。英語單詞同漢語一樣具有一詞多義，一詞多性的特點(diǎn)。解答此類問題首先要理解每個選項(xiàng)的基本含義，并注意交叉含義間的區(qū)別，了解其特殊用法，然后結(jié)合語境選擇正確答案。
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