拣工作按分拣对象可分为（）。
A、一次分拣和二次分拣
B、出口分拣和进口分拣
C、专门分拣和专项分拣
D、粗分和细分
参考答案：B
Last week I met my old friend Li Ming but I forgot ___ him for his telephone number.[ ]
A. ask
B. asking
C. and ask
D. to ask
"热胜则肿"言热邪偏胜可致水肿
