英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the

题目

英语选择：This is ＿ ruler .＿ ruler is yellow.A.the；a B.a；A C.A；the D.a；the

答案

C 名词第一次出现用不定冠词A （辅音前）或AN （元音前）,第二次再出现时是特指用定冠词THE