进入体内经过生物转化使其毒性增强的污染物是
A．SO2
B．CO2
C．BaP
D．DDT
E．Ph
参考答案：C
沥青防水卷材
The SARS will _________ quickly if we don’t pay much attention to it.
A．pass
B．spread
C．stop
D．grow
