正常人排出的粪便中含有()
A．粪胆素
B．粪胆原
C．细菌
D．脓细胞
E．血红素
参考答案：A, B, C
﹣4的绝对值是（ ）
Shortly after suffering from a massive earthquake and to ruins, the city took on a new look.
A．reducing
B．reduced
C．being reduced
D．having reduced
