侧踢腿的要点是。()
A.开髋
B.侧身
C.猛收腹
D.以上三点
参考答案:D
— What did your father do yesterday?
— He ____________ the floor. [ ]
A. clean
B. cleans
C. cleaned
D. cleaning
流动资金估算可按行业或前期研究的不同阶段选用扩大指标估算法估算或( )估算。
A.加权估算法B.预测估算法C.分项详细估算法D.成本估算法