主要用于高血压、外周血管痉挛性疾病、无症状性心肌缺血和变异性_爱下问搜题

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问题单项选择题 B1型题

主要用于高血压、外周血管痉挛性疾病、无症状性心肌缺血和变异性心绞痛的药物是（）

A.硝苯地平

B.氨氯地平

C.尼莫地平

D.维拉帕米

E.氟桂利嗪

答案

参考答案：A

解析：1.硝苯地平的药理作用主要有：①扩张血管：舒张冠脉和外周血管平滑肌，对各种原因引起的血管痉挛有很好的松弛作用。降低外周阻力，并增加心排出量。②引起心率增快，心收缩力加强。③抗血小板聚集及抑制血管平滑肌增生等。临床主要用于高血压、外周血管痉挛性疾病、无症状性心肌缺血和变异性心绞痛。2.氟桂利嗪、尼莫地平等能显著舒张脑血管，增加脑血流量。可治疗短暂性脑缺血、脑栓塞及脑血管痉挛，以及预防和治疗蛛网膜下腔出血所致的脑血管痉挛，减少神经后遗症及病死率。氟桂利嗪主要用于治疗脑血管功能障碍，如血管性痴呆及脑供血障碍，能改善记忆、增加智力。

解答题

已知倾斜角为135°且过点（2，1）的直线l与圆C：（x-1）²+y²=4相交与A，B两点，

（1）求直线l的方程；

（2）求弦长|AB|．

完形填空

I had been playing hockey（冰球）for about 10 years. I was always the one sitting at the end of the bench, and      got into a game. I went to all the      and showed up even when it was so      that your ‘breath froze’ and when the otherplayers had decided to stay home. I felt I had      enough and thought of quitting.
I finally decided to      the news to my mom that I was leaving the team. My mom may have looked like a tiny and quiet lady but on      my words, she said, “Remember, ‘A quitter never wins and a winner never quits.’ Your mother didn’t raise      , so think about yourself in a      way and see yourself as a winner!” So I worked harder than ever at getting in better shape,      my shot（投球） accuracy and changing my      .
Once in a match, we     our first game badly. What’s worse, one of our best players got hurt. I was sitting at my    place, at the end of the bench, when the coach came over and told me I was going      . I was nervous, excited and terrified all at the same time.
The opposing team was fast and I had to admit I was a little      .  But my mom’s words      out in my head like a church bell. Instead of being afraid, I was “pumped” and I very quickly found that all my      work was paying off.  I was as fast a skater as anyone else on the ice, and I seemed to get the     to score. The crowd went quiet. All the time I spent on the ice when everyone had
gone home had    me for this moment.
Won! I won!
The lesson I learned from my mom’s      has stayed with me over the years. I hear them whenever I am faced with a challenge, or whenever I      myself.

C．questioning