电力机车整备工作量计算，一般只作（）、整备台位及干砂项目的计算。

电子网络出版：是以数据库和电信网络为基础，以计算机主机的硬盘为存储介质，使整个编辑出版过程都在电子通讯网络中进行。
根据以上定义，下面哪种方式属于电子网络出版环节______。

A．因作家年龄较大，不便于电脑操作，只好手工写作
B．网上发行有限，只好出版成册，通过各大书店发行
C．作者通过E-Mail向编辑部投稿
D．因电脑数量有限，为了多人同时校对，把文稿打印出来，分发给每个人校对

《归档文件整理规则》提出的整理方法适用于各种纸质文件材料。5、把“件”作为归档文件整理单位的出发点是（）.

A.便于案卷的整理

B.检索的实际需要

C.冯轻立卷的工作量

D.检索的实际需要和减轻立卷的工作量

有4条长度分别为1，3，5，7的线段，现从中任取三条能构成三角形的概率是（    ）。

尊师重教是一个民族文明的重要标志，我们中 * * 自古就有尊师的美好传统。作为一个中学生，尊敬老师最重要的是[ ]

A．尊重老师的人格

B．帮老师做家务事

C．对老师要有礼貌

D．尊重老师的劳动

We know that many animals do not stay in one place. Bird, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration （迁移） is probably the migration of the fish, which is called “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

Recently, scientists have studied the migration of a kind of lobster（龙虾）. Every year, when the season of bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.

So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.

小题1:Most animals move from one place to another at a certain time to _________.

A．give birth

B．enjoy warmer weather

C．find food more easily

D．find beautiful places小题2:The fish called “salmon” spends a long life in _________.

A．salt water

B．rivers

C．fresh water

D．its birthplace小题3:What is the main idea of the passage?

A．Animals move in order to find food more easily.

B．The migration of the fish called “salmon” is the most famous migration.

C．Living things move from one place to another because they like to travel.

D．sometimes we know why and how living things move from one place to another, but sometimes we don’t.