问题 单项选择题 B型题

SMZ治疗敏感菌引起的感染()

A.首剂减半量

B.首剂加倍

C.早晨1次顿服

D.口服用药

E.舌下含服

答案

参考答案:B

解析:1.抗惊厥药硫酸镁口服给药产生导泻和利胆作用。 2.α受体阻断药哌唑嗪部分病人首次用药后出现直立性低血压、心悸、晕厥等,称为"首剂效应"。应用哌唑嗪治疗高血压,首剂减半量。 3.维持量给药常需4~5个t达到稳态治疗浓度,首剂加倍可迅速达到稳态冶疗浓度,迅速控制病情。 4.硝酸甘油口服首过消除显著,舌下含服可避免首过消除,1~2min起效。

选择题
阅读理解

阅读理解。

     Twenty years ago, I drove a taxi for a living. One night I went to pick up a passenger at 2:30 AM. When

I arrived to collect, I found the building was dark except for a single light in a ground floor window.

     I walked to the door and knocked, "Just a minute," answered a weak, elderly voice.

     After a long pause, the door opened. A small woman in her eighties stood before me. By her side was a

small suitcase.

     I took the suitcase to the car, and then returned to help the woman. She took my arm and we walked

slowly toward the car.

     She kept thanking me for my kindness. "It's nothing," I told her. "I just try to treat my passengers the

way I would want my mother treated."

     "Oh, you're such a good man." She said. When we got into the taxi, she gave me an address, and then

asked, "Could you drive through downtown?"

     "It's not the shortest way," I answered quickly.

     "Oh, I'm in no hurry," she said. "I'm on my way to a hospice (临终医院). I don't have any family left.

The doctor says I don't have very long."

     I quietly reached over and shut off the meter (计价器).

     For the next two hours, we drove through the city. She showed me the building where she had once

worked, the neighborhood where she had lived, and the furniture shop that had once been a ballroom where

she had gone dancing as a girl.

     Sometimes she'd ask me to slow down in front of a particular building and would sit staring into the

darkness, saying nothing.

     At dawn, she suddenly said, "I'm tired. Let's go now."

     We drove in silence to the address she had given me.

     "How much do I owe you?" she asked.

     "Nothing." I said.

     "You have to make a living," she answered. "Oh, there are other passengers," I answered.

     Almost without thinking, I bent and gave her a hug. She held onto tightly. Our hug ended with her remark,

"You gave an old woman a little moment of joy."

1. The old woman chose to ride through the city in order to _____.

A. show she was familiar with the city

B. see some places for the last time

C. let the driver earn more money

D. reach the destination on time

2. The taxi driver did not charge the old woman because he _____.

A. wanted to do her a favor

B. shut off the meter by mistake

C. had received her payment in advance

D. was in a hurry to take other passengers

3. What can we learn from the story?

A. Giving is always a pleasure.

B. People should respect each other.

C. An act of kindness can bring people great joy.

D. People should learn to appreciate others' concern.