问题 多项选择题

心包积液的心电图表现有()

A.ST段抬高,(aVR除外),弓背向下

B.QRS低电压

C.电交替

D.常有心动过速

E.以上均不对

答案

参考答案:A, B, C, D

阅读理解

阅读理解。

     School is not the safe place as it used to be. How to be safer in school? How can students stay away

from danger? There are many activities that students can do to learn safety in an easy way. Here are some

stories from the students who have had safety classes in Xuri Middle School.

     Wang Lin:

     About Sports Safety Once we made up a story about sports safety. All we needed to do was to point

out safe and unsafe sports behaviors in the story. From this lesson, we knew we should always do warm-up

(热身)activities before playing sports and drink some water after that.

     Liu Ying:

     About Classroom Safety Putting on short plays is a good way to learn and enjoy ourselves. We once put

on a short play about a boy called Little Naughty. He always did something naughty (淘气的) in the classroom

and got himself into trouble. In this way, we learned to behave well and get on well with each other.

     Zhou Weilun:

     About Fire Safety In our school, we have a fire emergency response practice (火警应急演习) in September

every year. So we know where to go if there is a fire in school. We learn to use the fire extinguisher (灭火器),

too. But I don't think we should be allowed to put out the fire alone,it's too dangerous for young students like

us.

1. The writer talks about ________ kinds of school safety in this passage.

A. two

B. three

C. four

2. According to the passage, we can learn that ________.

A. the students in school often get into trouble

B. school is not as safe as it used to be

C. there is a safety class in school once a month

3. Zhou Weilun tells us that they also learn how to use ________.

4. The passage is probably written for ________.

A. the athletes

B. the firefighters

C. the students

5. What is the best title for the passage?

A. Importance of School Safety    

B. Safety Activities for Students

C. How to Behave Well in School

填空题