下列实行“一批一证”的自动进口许可证管理的大宗、散装货物，______在进口时溢装5%予以免证。
A．原油 B．钢材C．化肥 D．铝土矿
参考答案：D
About ____of the students in Grade Nine this year were born in the_____.
A．three five; 1996.
B．three fifths; 1990s
C．third fifth; 1997.
D．third fifths; 1990s
房屋维修主要有哪些特点？
