杂草种子库是存留于土壤中的杂草种子和营养繁殖体的总体，其输入的主要途径是外地传播。
参考答案：错
— Did you see who the driver was?
— No, the car ran so fast ____ I couldn't have a good look at his face. [ ]
A. that
B. which
C. as
D. after
承包人向发包人递交竣工结算报告及完整的结算资料是在发包人认可工程竣工验收报告后（）内。
A．7天
B．14天
C．15天
D．28天
