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问题 单项选择题

2009年上半年，全国法院受理劳动争议案近17万件，同比增长30%，实现和维护劳动者权益是社会主义制度的本质要求，劳动者获得权力，维护权益的基础是______。

A．依法签订劳动合同

B． 自觉履行劳动者的义务

C．建立和谐劳动关系

D．保障劳动者主人翁地位

答案

参考答案：B

改错题

仔细阅读下列句子，每句中均有一个错误，请找出并在横线上改正，请按下列情况改正：

该句多一个词：把多余的词用斜线（ / ）划掉，在该行右边横线上写出该词，并也用斜线划掉。

该句缺一个词：在缺词处加一个漏字符号（∧）在该行右边横线上写出该加的词。

该句错一个词：把错的词下划一横线，在该行右边横线上写出改正后的词。

A day, I came across an old friend in a museum.           小题1:                  

My friend was in his sixties. Therefore, he looked so          小题2:                 

young. I asked him how he stayed young.                小题3:                

He told me take exercise was a good way                小题4:                 

to keep health, such as, having a walk.                    小题5:                 

His office was 2 miles far away from his home .Every day       小题6:                  

he went to work on foot instead taking a bus. He               小题7:                 

also gave me some other suggestion to be in good               小题8:                 

health. He thought how fun it was to do sports.            小题9:                 

Heard what he said, I decided to take action.                                      小题10:                              
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计算题

3.2 g某元素A 的单质与氢气化合生成3.4 g气态氢化物H2A，已知A 的原子核中质子数和中子数相等，则：

(1) A的原子序数为？（2分）

(2) 元素A位于元素周期表中什么位置？（2分）

(3) 气态氢化物的化学式是什么？并书写气态氢化物的电子式（2分）
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