You’d better not shout at her. She’s only eight-month-old girl.A. a B. theC. anD. /

问题补充：

You’d better not shout at her. She’s only eight-month-old girl.

A. a

B. the

C. an

D. /

答案：

A. a

B. the

(答案→)C. an

D. /

解析：此题重点考查合成形容词的基本构成，数词+名词(+形容词)；合成形容词中的名词(year, hour, metre, month等)必须用单数形式。因8的第一个音素是元音音素，故不定冠词用an.