下列反应不属于缓慢氧化的是 [ ]
A．蜡烛在空气中燃烧
B．粮食酿成白酒
C．人和动物的呼吸过程
D．农家肥料的腐熟过程
答案：A
— Do you know our town at all?
— No, this _____ the first time I _____ here. [ ]
A. was; has come
B. is; come
C. is; had come
D. is; have come
四等水准测量中，每一站的前后视距差，不能超过（）。
A.3m
B.5m
C.3mm
D.5mm
