单项选择题

I came into the office, the teacher were having a meeting. A.
While B.
When C.
Once D.
Since

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单项选择题

下列选项中，属于传播网络谣言的危害的是（）。

①推毁社会信任体系②引发民众恐慌，损害公共利益③威胁社会和谐稳定 A、①② B、①③ c、②③ D、①②③

In general, no matter what intermittent method is used, the interval time should be controlled between 60 and 120 seconds.

答案：错误