186减去98的差，再乘47加上25的和，积是多少？
（186-98）×（47+25），
=88×72，
=6336．
答：积是6336．
级别按由低到高的顺序排列正确的一组是( )。
A．童生、秀才、举人、贡士、进士 B．秀才、童生、举人、贡士、进士C．童生、举人、秀才、进士、贡士 D．童生、秀才、贡士、举人、进士
The teacher asked us ________. [ ]
A. when did I finish my work
B. why didn't we tell him about it earlier
C. what we were interested in
D. where we are going to have our lunch
