绘图题：画出下列电子元器的国际通用符号：不连接导线；扬声器；发光二极管；PNP晶体三极 管；晶体振荡器。
参考答案：
如图E-30所示
_______ M/money is important, _____ it doesn’t mean _______.
A．Although, but, everything
B．Although, /, everything
C．/, but, anything
D．Although, /, anything
