灵活就业的毕业生可申请（）或在校保留，使档案资料得以顺利延续，并保证转正定级、组织关系转接等基本权益。
参考答案：人事代理
—How old is Steve?
—He is ____________ and he has an ___________ sister.
A．13-year-old; 10 years old
B．13 years old; 11-year-old
C．13 years old; 10-years-old
D．13-years-old; 11-years-old
X、Y运动的直线度是怎么保证的？
