处理数字信号的电路称为（）。
A、数字电路
B、模拟电路
C、放大电路
D、脉冲电路
参考答案：A
将八度分成十二个均等的部分（半音）的律制叫做（）。
It has been discovered that the traffic accident ________ the driver's careless driving.[ ]
A. resulted in
B. resulted from
C. led to
D. contributed to
