关于系数，下列说法错误的是（）。 A.系数是由时间创造的 B.系数是衡量证券承担系统

The comprehension passages on this course are designed to help you increase your speed. A higher reading rate, with no loss of comprehension, will help you in other subjects as well as English, and the general principles apply to any language. Naturally, you will read every book at the same speed. You would expect to read a newspaper, for example, much more rapidly than a physics or economics textbook but you can raise your average reading speed over the whole range of materials you wish to cover so that the percentage gain will be the same whatever kind of reading you are concerned with.

The reading passages which follow are all of an average level of difficulty for your stage of instruction.

If you get to the point where you can read books of average difficulty at between 40 and 50 w.p.m. with 70% or more comprehension, you will be doing quite well, though of course any further improvement of speed with comprehension will be a good thing.

When you practice reading with passages shorter than book length, do not try to take in each word separately, one after the other. It is much more difficult to grasp the broad theme of the passage this way, and you will also get stuck on individual words which may not be absolutely essential to a general understanding of the passage. It is a good idea to skim through the passage very quickly first (say 500 words in a minute or so) to get the general idea of each paragraph. Titles, paragraph headings and emphasized words (underlined or in italics) can be a great help in getting this skeleton outline of the passage.

You would expect to read a physics textbook ().

A. at the same speed as you read a funny story

B. much more rapidly than a newspaper

C. as slowly as you read Austen’s novel Pride and Prejudice

D. much more slowly than a newspaper

低钾血症时，尿量增过后再静脉补钾（）

A.20ml/h

B.30ml/h

C.40ml/h

D.50ml/h

E.60ml/h

昆虫性二型

冷高压

侵害知识产权的（）责任形式的归责原则是过错责任原则。

A、停止侵害

B、赔偿损失

C、消除影响

D、公开赔礼道歉