行道树

()对策主要使人知道，在哪里存在危险源、如何导致事故、事故的可能性和严重程度如何，对于可能的危险应该怎么做。

A．安全教育

B．安全技术

C．安全管理

D．安全防范

阅读理解.

     It is well known that Albert Einstein was one of the greatest scientists of all time and he

was also a really great person. Here are some interesting things about him.

     When Einstein started to work in America, someone asked him what he needed. He said

he needed a desk, some paper and a pencil. He also asked for a big waste-paper basket to

hold all of his mistakes. This shows that he knew even the cleverest man in the world can

only learn by making mistakes.

     Einstein regarded time as very important. He never wore socks and he thought putting

on socks was a waste of time as people already wore shoes. He also thought it was a waste

of time remembering things that could quickly be found in a book. That's why he never

remembered his own phone number, which was in the phone book. He knew what was worth

remembering. It is true that if we are going to do great things in our lives, we can not waste

our time.    

     Einstein liked to joke too. Once in an exam a student asked him why all the questions

were the same as last year's. Einstein replied the questions were the same but the answers

were different!

1. In one exam, Einstein _____.

A. asked different questions

B. asked difficult questions

C. wanted the answers all the same

D. wanted different answers

2. Einstein never remembered his own phone number because _____.

A. no one told him the number

B. he couldn't remember it at all.

C. he didn't think it was worth remembering.

D. he didn't have a phone.

3. According to the passage, which of the following is TRUE?______.

A. Einstein has been to many countries except America.

B. Einstein thought people could learn from mistakes.

C. Einstein thought socks were as important as shoes.

D. Einstein didn't like talking with others.

4. From the passage, we learn _____.

A. Einstein thought time was very important.

B. Einstein was too careful to make mistakes.

C. Einstein made few jokes with the students.

D. Einstein was a person who remembered everything clearly.

（一）材料一：在某市一条不足400米长的步行街上，清洁工人清理出人们吐掉的口香糖约15公斤。某市公交公司无人售票公共汽车3年间收到的残币假钞竟高达50万元。一孕妇在参加公务员录用考试后上了专门接送考生的大客车，全车考生没有一个人给她让座。材料二：在对某市市民社会公德现状的一次调查中，99%的受访者认为不应该随地吐痰，但真正吐到手纸扔到垃圾箱里的不足50%；雨季商店为顾客准备的文明伞，表示用完后及时归还的占受访者的81%，但下雨过后，商店真正回收的雨伞仅占发放的10%；人人皆知本市严重缺水，但公共用水的浪费却十分惊人。

材料反映了部分公众在社会公德方面“知”、“行”脱节，其主要原因是（ ）

A．公德规范在具体践行上存在困难

B．为图一时方便或一己私利而违背公德

C．社会公德往往被视为“小节”而受到忽略

D．没有准确理解公德规范的内容

在OSI参考模型中，处在顶层和最底层分别为 (13) ，中继器工作在OSI参考模型中的 (14) 。

A．传输层

B．数据链路层

C．物理层

D．网络层

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