educational CD-ROM has just come outCD-ROM is called ‘Dora Explorer’.A. A ; TheB. An ;

educational CD-ROM has just come out. CD-ROM is called ‘Dora Explorer’.
A. A ; The
B. An ;The
C. The ; The
D. The ;A

A. A ; The(答案→)B. An ;TheC. The ; TheD. The ;A解析：第一次提到某物时，要用不定冠词a或an，根据本题后接的单词的首个音标为元音音标，故用an，第二次再提到该物时，要加定冠词the，故选B

你的回答很对