需招投标或价格评审的物资采购部与每月（）日提交招标明细和《采购物资价格评审表》。
A、19
B、22
C、28
参考答案：B
Jack has been feeling down recently . I wonder that is making him so upset .
A．what is it
B．why is it
C．why it is
D．what it is
我国卫生立法的基本特征？（5点）
