问题
选择题
If you are not yet , you are forbidden to visit this site .
A．eighteen years
B．at age of eighteen
C．eighteen – year-old
D．eighteen years of age
答案
答案：D
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If you are not yet , you are forbidden to visit this site .
A．eighteen years
B．at age of eighteen
C．eighteen – year-old
D．eighteen years of age
答案：D