用秤称物，物重4kg，平衡时OA∶OB=1∶4。设秤杆、秤盘等重量不计，手的拉力必须是_______________N。
50
It was ____________ day. [ ]
A. wind
B. windy
C. a windy
I _________ Our team to win the match. [ ]
A. expected
B. hoped
C. suggested
D. made
