AS可用但没有应用业务被激活是什么状态（）.
A.AS-DOWN
B.AS-INACTIVE
C.AS-PENDING
D.AS-ACTIVE
参考答案：B
把一粒玉米放在火上烧，烧掉的物质和剩下的物质分别是
A．无机物、有机物
B．有机物、无机物
C．无机物、无机物
D．有机物、有机物
Three hours _____ enough for us to finish the task. [ ]
a. are
b. has
c. is
d. were
