行车事故的分类是怎样规定的？

某文件密级标志为“绝密★30年”，保密期限不超过（）

A、30年

B、20年

C、长期

D、25年

阅读理解。

     Mr. Samson was a newspaper editor in Boston, America. On the night of August 28, 1988, when he was

on night duty, he dreamed that a volcano (火山) near the Island of Java erupted (爆发), and that the local

people were buried under lava (熔岩).

     When he woke up from the bad dream with a start, he thought it was very interesting material, so he wrote

it down on a piece of paper, left it on the desk and went home. Early in the morning, the editor-in-chief came

to work and saw the paper. He took it for the latest news that something important had happened last night and

published it immediately. Only later did he find out it was just about what Mr. Samson had seen in his dream.

But it was all too late because the newspaper had already been delivered (传送). And it caused a great panic.

     In no time the editors met to discuss the serious problem. They finally decided to make an apology in the

newspaper. Just at that time word came that a volcano on a small Island between Java and Sumatra did erupt.

The eruption made the small island lose two thirds of its area, and the seismic sea waves caused tragedy (悲剧)

in human.

1. The editor-in-chief immediately published the news because _____. [ ]

A. it was interesting material

B. it was the last minute to publish the newspaper

C. he thought it was the latest news by mistake

D. he knew Mr. Samson was good at this kind of news

2. The underlined word "panic" in the second paragraph probably means _____.[ ]

A. feelings of fear

B. feelings of excitement

C. feelings of joy

D. surprise

3. The editors in the newspaper office _____.[ ]

A. didn't make an apology

B. took back all the newspaper

C. made an apology to the readers in the newspaper

D. didn't realize the serious problem

4. Which of the following would be the best title for the passage? [ ]

A. The bad news

B. News leading to a tragedy

C. Seeing is believing

D. Dream news became true

什么是楞次定律？

（）处于货物的流通领域。

A.分配性冷库

B.流通冷库

C.分配性仓库

D.流通仓库

在服务流程上，证券投资顾问服务一般是证券研究报告的重要基础。( )