问答题 ADC0809的ADDC、ADDB、ADDA为通道选择位，若要选择模拟通道5进行A/D转换，则ADDC、ADDB、ADDA的值应该为[填空(1)] 。

问答题

单项选择题 The balloon contained two MPs. ________ two MPs in it. A、They were B、There were C、The had D、There had