下列选项中，人工合成有机粉尘的内容不包括的是( )。
A．农药 B．炸药C．人造纤维 D．骨质粉尘
参考答案：D
Those lovely flowers were ______ for your mother for her 57th birthday, but as she is away, I would be glad if you accept them.
A．committed
B．intended
C．supplied
D．scheduled
死亡细胞变为嗜酸性，细胞核的细微结构消失，但细胞和组织结构的轮廓仍存在，这种改变称为（）
A.坏疽性坏死
B.液化性坏死
C.干酪样坏死
D.脂肪坏死
E.凝固性坏死
