问题 单项选择题

男性,67岁,3周来晕厥发作5次,拟诊为阿斯综合征。最易发生阿斯综合征的心律失常是()

A.完全性左束支传导阻滞

B.完全性右束支传导阻滞

C.三度房室传导阻滞

D.心房颤动

E.阵发性室上性心动过速

答案

参考答案:C

解析:以上心律失常中三度房室传导阻滞是最可能发生阿斯综合征的。心房颤动患者只有出现极缓慢的心室率时才有可能出现阿斯综合征。完全右束支传导阻滞和完全左束支传导阻滞一般不会造成缓慢的心率,阵发性室上性心动过速一般不出现阿斯综合征。

阅读理解

It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch.

What is this? Your skin(皮肤), of course! What does you skin ask for return for all the wonderful things it does? Just a little care!  So let’s learn how to take care of our skin.

Like the heart and stomach, your skin is an organ (器官).In fact, it is the largest organ in your body.Unless there’s a problem, you may not think about your skin very much.But skin has an important job to do.

Your skin is protecting you.Your skin keeps you from getting sick.When you take care of your skin, you are helping your skin do its job.Taking care of your skin today will help you have no problems in the future.

Clean skin is happy skin! One simple way to take care of your skin is to keep it clean.Keeping your hands clean is very important.When washing your hands, use warm water.Wet your hands, and then use soap.You should wash your hands carefully everywhere.

You’ll also want to use warm water, but not too hot, when you take a bath.Use soap to clean your body.Don’t forget under your arms and behind your ears! Your face needs attention, too.It’s a good idea to wash your face once or twice a day with warm water.

小题1:We can infer( 推断出 )from Paragraph 3 that __

A.people don’t often care much about their skin

B.skin is an organ

C.there would be nothing wrong with your skin

D.skin is not important at all小题2:Which of the following best describes your clean skin?

A.A kind of job to keep you from getting sick.

B.An important and largest organ.

C.Something like your heart and stomach.

D.Healthy and happy skin.小题3:Why does the writer think we should try to take care of our skin today?

A.To help us warm up when we are cold.

B.In order to keep our insides from falling out.

C.In order to help us have no problems in the future.

D.To let us feel things by touch.小题4:What does this passage mainly talk about?

A.Taking care of your skin.

B.Your skin.

C.An important organ.

D.Keeping yourself from getting ill

单项选择题