80C51单片机的（）口的引脚，还具有外中断、串行通信等第二功能。
A.P0
B.P1
C.P2
D.P3
参考答案：C
The village is ______what it looked like when they settled their homes there 20 years ago.
A．not any longer
B．no longer
C．no more
D．not any more
谷物收获工艺？
