宴会传菜服务员的指挥工作是做到川菜不错、不漏、不提前、不落后。
参考答案：错
引起产褥感染的病原体，不常见的有
A．铜绿假单胞菌(绿脓杆菌)
B．金黄色葡萄球菌
C．衣原体
D．支原体
E．大肠杆菌
—I ___________ a rainbow in the sun.
—Really? Do you know how many colours ___________ in a rainbow? [ ]
A. just have seen, there are
B. have just seen, are there
C. just saw, there are
D. have just seen, there are
