问题
单项选择题 A1/A2型题
以下各项中，属于低钾血症典型EKG改变的是（）
A.ST段降低
B.Q-T间期变长
C.U波
D.T波变宽、降低、双向或倒置
E.QRS波变宽
答案
参考答案：D
解析：低钾血症典型的心电图改变为早期出现T波降低、变平或倒置，随后出现ST段降低、QT间期延长和U波。故答案应选D。
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以下各项中，属于低钾血症典型EKG改变的是（）
A.ST段降低
B.Q-T间期变长
C.U波
D.T波变宽、降低、双向或倒置
E.QRS波变宽
参考答案：D
解析：低钾血症典型的心电图改变为早期出现T波降低、变平或倒置，随后出现ST段降低、QT间期延长和U波。故答案应选D。
On the evening of last Sunday while I was reviewing my lessons in my room, it suddenly began to rain. 1 as usual, I stopped to listen to the rhythm（韵律）of the rain. For many years, whenever it rains, I couldn’t 2 listening to it and thinking of the garden in which I spent my childhood in my hometown. When I was a little girl, my family lived in a big house with a big garden in the countryside. The garden was full of flowers and 3 , with some bamboo in front of the wall. Whenever it rained, I 4 to sit in the front of the house, listening to the rhythm of the rain and watching the 5 raindrops. When small drops of rain fall from the heaven in a row, they 6 a curtain made up of pearls（珍珠）; when the raindrops 7 the ground, a lot of small sprays（水花）will splash（溅出）and then disappear slowly. I have been 8 interested in watching such a scene. Listening to the rhythm of the rain, I feel calm and peaceful in my heart. This feeling of peace makes me think a lot about life. We are the 9 of the earth, and one day we will embrace（拥抱）our earth and stay with her forever. Life is short and we should treasure it. Listening to the rhythm of the rain, I learn to understand the 10 of life.
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