梨树缺钾时叶片呈棕色或黑色。
参考答案:对
Because the first pair of shoes did not fit properly, I asked for _____.
A.another shoes
B.another one
C.the others ones
D.another pair
基层医疗卫生机构未履行对辖区内肺结核患者居家治疗期间的督导管理职责的,由县级以上卫生行政部门责令其改正,给予警告。()