47名同学去划船,每条船限坐7名同学,要租______条船才能坐下.
47÷7=6(条)…5(人),
6+1=7(条);
答:要租7条船才能坐下.
故答案为:7.
I find it_____ to talk with the old man.[ ]
A. interest
B. interesting
C . interested
D. be interesting
掘进工作面发现透水都有哪些象征?