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always语句的敏感信号表达式又称事件表达式或敏感表，关于敏感信号表达式下面描述中错误的是。

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always语句的敏感信号表达式又称事件表达式或敏感表，关于敏感信号表达式下面描述中错误的是。

A.在敏感信号表达式中应列出影响块内取值的所有信号。

B.敏感信号表达式，当其值改变时，则执行一遍块内语句；

C.敏感信号可以为单个信号，也可为多个信号，多个信号中间需用关键字or连接。

D.敏感信号可以取值为x或z任何值。

参考答案:

答案：敏感信号可以取值为x或z任何值。

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