问题 问答题

心肺复苏的有效指征?

答案

参考答案:(1)能扪及大动脉搏动,血压维持在60mmHg以上;(2)口唇、面色、甲床等颜色由紫绀转为红润;(3)室颤波由细小变为粗大,甚至恢复窦性心率;(4)瞳孔缩小,有时有对光反射;(5)呼吸逐渐恢复;(6)昏迷变浅,出现反射或挣扎。

单项选择题
阅读理解

This dictionary tells you about English words and how to use them in reading, writing and speaking English. It not only gives the meaning of words, it can also help you with spelling, word-building, grammar and pronunciation.

To use your dictionary correctly, you need to understand how the dictionary works. At the front of the book, you will find some exercises to help you make the most use of your dictionary.

If you look up the word “colour”, you will find two spellings for this word. “Colour” is used in British English, while “color” is used in American English. When there are differences between British and American spelling, the dictionary shows it with the word “BrE” for British English and “AmE” for American English.

The dictionary also helps you pronounce words correctly. We use a special alphabet (特殊字母) to show pronunciation. If you turn to the inside back face, you will see all the phonetic letters (音标) with some words to show you how they are pronounced. Just look at the inside back cover when you’re not sure how to say a word.

The most important reason for using a dictionary is to find out the meaning of a word—its definition

In this dictionary, the definitions have been written using only 2000 words. This means that the definitions of even the most difficult words are simply explained and easy to understand.

When a word has more than one meaning, read all the meanings until you find the one that correctly tells the use of the word you are looking for.

Most of the words in this dictionary can be used by people in all parts of the world.

小题1:The AmE spelling of the Chinese word “颜色” in this dictionary is ________.

A.colour

B.colar

C.color

D.corner小题2:The phonetic alphabet help you ________ each word correctly.

A.understand

B.write

C.say

D.know小题3:The underlined word ‘definition’ means__________

A.词性

B.词条

C.词义

D.词库小题4:The dictionary explains ________.

A.some of the difficult words

B.all the words in the dictionary in a simple way

C.all easy words

D.the words with two meanings