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问题 多项选择题

流言与谣言的产生，有社会环境方面的原因，也有主观心理方面的原因。主观心理方面的原因主要包括（）。

A.满足某种心理需要

B.个体差异

C.社会结构失调

D.正常信息传递途径受阻

E.自圆其说的倾向

答案

参考答案：B, D, E

问答题

Passage Translation 2If your great grandparents were born in a rich country in the early 1900s, their lifespan would have been about 50. Today people in developed countries have a life expectancy of 80 or more. This is because the improvements of public health, such as running water and flushing toilets and then medical care. But these improvements have mostly benefited richer nations. There are still places in the world that don’t have clean water, enough food and enough doctors. So people there often suffer from famine and disease.
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填空题

晶闸管在触发开通过程中，当阳极电流小于（）电流之前，如去掉（）脉冲，晶闸管又会关断。
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