Though measures have now been taken to prevent further price hikes, many people remain _______ over the rising cost of food.
A．be concerningB．concernsC．concernD．concerned
D

試題分析：考察concern用法。形容詞concerned擔(dān)心的；與系動詞remain連用，構(gòu)成系表結(jié)構(gòu)。Concerns是名詞擔(dān)心；句意：盡管措施已經(jīng)被采取來預(yù)防價格上漲，很多人仍然對于食品價格的上漲很擔(dān)心。故D正確。
點評：該詞是高中階段的重要的詞匯之一，concern可以作為動詞；介詞concerning關(guān)于…；還可以構(gòu)成固定搭配as far as sb be concerned就…而言。
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