4.         World Expo is regarded as the Olympic Games of the economy,science and technology,         expert said.(  )
A.A; anB.The; anC.The; aD.A; the

分析 一位專家說,世博會被認(rèn)為是經(jīng)濟和科技的奧運會.

解答 答案:B
題干中the World Expo世博會,專有名詞;句中expert表示泛指某一位專家,要用不定冠詞來限定;expert是元音開頭的單詞,要用an.故選B.

點評 冠詞是一種虛詞,本身不能獨立使用,只能放在名詞前幫助說明名詞所指的人或事物,它是英語詞性中最小的一類,只有三個,一種是不定冠詞a,an;一種是定冠詞the.此外也有些特定場合不用冠詞,即通常所稱的零冠詞.不定冠詞表示泛指,定冠詞表示特指.

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