问题 单项选择题

关于胆囊结石的描述,错误的是()。

A.泥沙样结石呈胆囊后壁沉积的强回声带

B.可随体位改变依重力方向移动

C.后方可无声影

D.均为强回声团

E.壁内结石形成“彗星尾征”

答案

参考答案:D

解析:胆囊结石在声像图上呈现为强回声团是因为固体的结石和周围的液性胆汁两者间声阻抗差特别大,即表现为强回声。但若缺少胆汁的对比条件,如胆囊内充满结石或结石嵌顿于胆囊颈部,则结石并非呈现为强回声团,但仍可通过明显且干净的声影来判断结石的存在,故D为正确答案。

阅读理解

The most common disease in the world is the cold. It often starts with a sore throat . You sneeze and your nose runs. You usually have a headache, too. Often you have a cough later. It's not a serious disease, but you can feel quite bad. 

There isn't a cure (良药) for a cold, but you can take some medicine to make you feel better. For example, you can take aspirin (阿司匹林) to get rid of (去除) your headache. It is good to rest. and to drink a lot of water, too. A doctor once told me."With the right medicine. a cold will last for seven days. With no medicine, it will go on for a whole week!"

A long time ago, people understood that some plants made them feel better. For example, the juice of lemons (柠檬) makes a sore throat feel better. In modern times, scientists have found out which chemicals (化学药品) are in them. Man, of our medicines today are made from those chemicals. There are some diseases that we can't cure yet. And nobody has found a cure for old age. But because of modern medicines, the average people now live longer than their grandparents.

小题1:A cold often starts with _______.

A.headache

B.a cough

C.a pain in your throat

D.feeling a little cold小题2:What should we do when we catch a cold?

A.We only take some medicine.

B.We should rest well, drink much water and have some medicine.

C.We just wait for a whole week.

D.We only need a good rest.小题3:What makes a sore throat feel better?

A.The medicine aspirin.

B.A lot of water.

C.Something inside lemons.

D.The root of a plant.小题4:What is the real meaning of the doctor's words?

A.There is almost no medicine that can cure the cold.

B.There is some medicine that can cure the cold.

C.You will feel well after a whole week when you take some medicine.

D.The cold is a serious disease.小题5:From the passage. which of the following is not TRUE?

A.You can feel quite bad though the cold is not a serious disease.

B.We can get some medicine to get rid of our headache.

C.Even if you don't take any medicine, you will feel well after seven days.

D.People have found a cure for old age.

选择题