如果一种危险具有多种事故形态，且它们的事故后果相差悬殊，则按

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问题单项选择题

如果一种危险具有多种事故形态，且它们的事故后果相差悬殊，则按后果最严重的事故形态考虑，这是( )。

A．最小伤害原则

B．概率求和原则

C．重大危险源原则

D．最大危险原则

答案

参考答案：D

解析：最大危险原则。如果一种危险物具有多种事故形态，且它们的事故后果相差大，则按后果最严重的事故形态考虑。

阅读理解

阅读理解。

There are four seasons in a year. They are spring, summer, autumn and winter. It's warm in spring. We

can go out to play. It's rainy and hot in summer. In autumn, the leaves(树叶) turn yellow. It snows in

winter. We can make snowmen. Winter is my favourite season.

1. How many seasons in a year?

A. Four.

B. Five.

C. Three.

2. In __________,we can go out to play. It's warm.

A. summer

B. spring

C. winter

3. It's hot in summer. It's _______,too.

A. cool

B. rainy

C. snowy

4. The trees are yellow in ___________.

A. spring

B. autumn

C. winter

5. I like _____________best.

A. winter

B. autumn

C. spring

选择题

在社会保障体系中，最引人注目的是 [ ]

A．就业制度

B．城市居民最低生活保障制度

C．医疗保险制度

D．养老保险制度