参加田径比赛的人数有54人,比参加球类比赛的人数少25%.参加球类比赛的有多少人?
54÷(1-25%)
=54÷75%
=54÷0.75
=72(人);
答:参加球类比赛的有72人.
I don't think the experiment is _____ failure. At least we have got _____ experience for our
future work on _____ nature.
A./; /; /
B.a; /; the
C.a; /; /
D./; the; /
计日工是处理工程变更(估价)的一种特殊形式。