卢女士，48岁，诊断为支气管哮喘，一日出现呼吸困难，下列描述正_爱下问搜题

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问题单项选择题

卢女士，48岁，诊断为支气管哮喘，一日出现呼吸困难，下列描述正确的是

A．胸闷、烦躁、喜平卧

B．呼吸频率快而表浅、吸气费力

C．胸闷、口唇紫绀、呼气费力

D．三凹征、吸气和呼气均感费力

E．张口呼吸、口唇紫绀、吸气费力

答案

参考答案：B

解析：支气管哮喘病人常出现呼气性呼吸困难，表现为呼气费力，呼气时间显著长于吸气，胸闷、呼吸费力、烦躁、张口呼吸、紫绀、鼻翼煽动等症状。故选项C正确。选项A错误，呼吸困难时往往不能耐受平卧；选项EB为吸气性呼吸困难表现，常见于喉头水肿、气管异物等；选项D为混合性呼吸困难表现，常见于重症肺炎、广泛性肺纤维化等。

完形填空

Whenever you want to make a decision, just make sure to think twice and confirm it. This is what we learn from the following story. While two old beggars were sitting on a        street corner, they watched helplessly as scores of people walked by. Some purposely       them and others too caught up in their own cares didn’t even notice their        . Every so often, a kind-hearted woman or a small child would drop a few coins in the       which lay in front of them.
As the crowd began to die down, they started to           their things and head for their evening      . Just as they were getting ready to leave, they noticed a man walking toward them. He was obviously a         man—they could tell that from his finely tailored business suit.
The first beggar whispered to the second with          , “He’s coming our way!”
The two tried not to look         at the man as he stepped closer to them, but they couldn’t          gazing up with anticipation         he reached into his pocket and took something out.
“Thunk” was the only sound they heard as what looked like a piece of hard        , wrapped in tissue paper hit each of their waiting hats. The rich man           and continued on his way, not making a backward glance.
“How insulting(侮辱人的)!” said the first beggar. “He could have          left us a few coins or a spare bill, but he mocks us with a piece of rock candy. Who does he think we are?        ? There’s no way we can even eat this—we have no         .” He picked up the object and threw it into the gutter.
“I haven’t had anything like this for ages,” the second beggar thought. “I can’t chew it, but I can suck on it      , and the sugary juices will stay in my          for a long time. How nice of that man to offer me something so sweet！”
With that, he         the white tissue paper, but to his        , there was no hard rock candy inside. However, into his fingers fell a shiny white pearl worth thousands of dollars.

B．for a while

C．after a while

D．once in a while

A．satisfaction

D．disappointment

单项选择题 A1/A2型题

与志贺毒素致病作用类似的毒素是（）

A.肉毒外毒素

B.大肠埃希茵内毒素

C.霍乱外毒素

D.金葡茵外毒素

E.伤寒杆菌内毒素