3.Liu Ming is_____18-year-old student.He got a gold medal in

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3.Liu Ming is_____18-year-old student.He got a gold medal in the competition.
A.a B.an C.the D./
像这种：num.-year-old的结构,前面的不定冠词用什么?用的依据是什么?

B
18( eighteen ) 是元音开头,
加油!不明白再问!如果帮到你,请采纳,谢谢!
再问：与num.-year-old的结构无关吗？
再答：与结构无关，关键是数字（是元音开头用an，以辅音开头用a ，如 a nine-year-old boy )

3.Liu Ming is_____18-year-old student.He got a gold medal in liu xiang trains every day ( ) get a gold medal in the futur liu Xiang broke the Olympic r______ and won a gold medal in she got the gold medal in the last ol He won a gold medal in the Olympic Games,but he was just---- He is ________ about his chances of winning a gold medal in Chinese athiete Liu Xiang,winner of gold medal in the men's 英语翻译Chinese athlete Liu Xiang,winner of gold medal in the me she won a gold medal in the c ( ) china got the first gold medal in olympic games in 1983 .it' Liu ming is a lucky student.(改为感叹句） He achieved w____ fame after he won the gold medal in the Ol