CT扫描前，病人必须去除金属物的目的是()A．防止饰物丢失  B．防止掉入机架内

If you want to become a better reader, what should you know about speed of reading?

Some people read very rapidly(很快地), while others read very slowly. But which one is

better?

The rapid reader may be a good reader when he reads a storybook for fun. But he may not be

able to slow down enough to read directions(说明) carefully. He may read so rapidly that he does

not take time to understand fully the ideas and information which are important to remember.

The slow reader may be a good reader when he reads directions for making something. But he

may spend too much time in reading a simple story which is meant to be enjoyed but is not

important enough to be remembered.

So, you see, either a rapid reader or a slow reader is not really a good one. If you wish to

become a better reader, here are four important things to remember about speed of reading.

1. Knowing why you are reading will often help you to know whether to read rapidly or

slowly.

2. Some things should be read slowly throughout. Examples are directions for making or doing

something, science and history books, and Maths problems. You must read such things slowly or

remember each important step and understand each important idea.

3. Some things should be read rapidly throughout. Examples are simple stories for enjoyment,

letters from friends and bits of news from hometown papers.

4. In some of your reading, you must change your speed from fast to slow and slow to fast, as

you go along. You will need to read certain(某些) pages rapidly and then slow down and do more

careful reading when you come to important ideas.

小题1: What should be read rapidly?

A．Directions for making something.

B．Maths problems.

C．Science and history books.

D．Storybooks, newspapers, personal letters, etc.小题2:What is the important thing you should keep in mind about speed of reading?

A．To read as fast as you can.

B．To fit your reading speed to your needs.

C．To read as slowly as possible.

D．To keep your reading at a certain speed.小题3:Which title best gives the main idea of the passage?

A．Something about Careful Reading

B．Be a Rapid Reader.

C．How to Read?

D．How to Be a Slow Reader?

交流电源即（），直流电源包括弧焊发电机和弧焊整流器。

氨苄西林或阿莫西林的注射溶液，不能和磷酸盐类药物配伍使用，是因为（）

A.发生β-内酰胺开环，生成青霉酸

B.发生β-内酰胺开环，生成青霉醛酸

C.发生β-内酰胺开环，生成青霉醛

D.发生β酰胺开环，生成2，5-吡嗪二酮

E.发生β-内酰胺开环，生成聚合产物

骨转移瘤最多见于（）

A.骨盆

B.膝以下

C.脊柱

D.肘以下

E.颅骨

目前，在国内BOPET一般使用（）油墨进行印刷。

A.苯溶性

B.氯化聚丙烯

C.聚酰胺

D.聚氨酯