【題目】—Is thispen?
—Yes, it is. It'sorange pen.
A.a;an
B.an;a
C.a;a
D.an;an

【答案】A
【解析】句意:—這是一支鋼筆嗎?—是的,它是,它是一支橘色的鋼筆。a和an都是不定冠詞,用來修飾可數(shù)名詞單數(shù)形式,表示泛指一個……。第一個空后面的名詞是pen,前面應該用a;第二個空后有形容詞orange,橘色的,是元音發(fā)音開頭的,故應用an。故選A。

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