花生在()施用增产灵,可防落花。
A、开花期和盛花期
B、结荚期
C、苗期
D、成熟期
参考答案:A
Could you the window? I feel a little cold. [ ]
A. please not to open
B. please not open
C. not please to close
D. please not to close
平面阶梯铣刀通常是()刀具。