行新生儿及婴儿胸外心脏按压时，每分钟按压次数应不少于（） A.50次 B.80次 C

肛周脓肿

A．不凝的血性液体
B．黄绿色透明液体，无臭味
C．稀脓性液体，略带臭味
D．淡黄色透明液体
E．黄绿色稠厚液体，带有粪便样特殊臭味 下列疾病的穿刺液分别是以上哪种液体

After dinner he often _____ in the park.            [ ]

A. take a walking      

B. takes a walk              

C. taking a walk

对损害消费者合法权益的行为，通过大众传播媒介予以揭露批评是（）。

A.经营者的义务

B.消费者的义务

C.生产者的义务

D.消费者协会的职能

E.行业协会的职能

下列配电系统中，不属于三级配电是指（ ）

A．总配电箱

B．分配电箱

C．开关箱

D．控制按钮

There (1) not one type of reading but several according to your reasons for reading. To read carefully, you have to (2) your reading speed and technique (3) your aim (4) reading. Skimming is a technique necessary for quick and efficient reading.

When skimming, you (5) the reading (6) quickly in order to get the (7) of it, to know how it is organized, (8) an idea of the tone or the intention of the writer. Skimming is (9) an activity which (10) an overall view of the text and (11) a definite reading competence.

Skimming doesn’t need reading all the material, but it doesn’t mean that it is an (12) skill for the lazy, because it need a high degree of alertness and concentration.

When you read, you usually start with (13) understanding and move towards detailed understanding rather than working the other way round. But (14) is also used after you have already carefully studied and you need to (15) the major ideas and concepts.

In order to be able to skim quickly and (16) through a text, you should know where to look for what you want. In preview skimming you read the introductory information, the headings and subheadings, and the summary, if one is provided. (17) this skimming, decide whether to read the material more thoroughly, and select the appropriate speed (18) you read.

The same procedure (19) for preview skimming could also be used to get an overview. Another method would be to read only key words. This is done by omitting the unnecessary words, phrases, and sentences.

In order to skim efficiently and fulfill your purpose, (20) practice is necessary.

4().

A.on

B.while

C.as

D.at