This is boy. That girl is .
A. an 8-year-old；6 years old.
B. an 8-years-old；6 years old
C. an 8-year-old；6-year-old
D. a 8-year-old； 6-year-old
网友回答
(答案→)A. an 8-year-old；6 years old.
B. an 8-years-old；6 years old
C. an 8-year-old；6-year-old
D. a 8-year-old； 6-year-old
解析：考查复合词。第一空an 8-year-old做定语，故用连记符号形式，第二空6 years old做定语，故选A。