问题
单项选择题
一风湿性心脏病二尖瓣狭窄患者，突然出现心悸、脉搏短绌，立即行心电图描记。显示如图。该患者的心律是（）
A．正常心律
B．心房颤动
C．心房扑动
D．心室颤动
E．房性过早搏动
答案
参考答案：B
解析：
由图看出：P波消失，心律不齐。
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一风湿性心脏病二尖瓣狭窄患者，突然出现心悸、脉搏短绌，立即行心电图描记。显示如图。该患者的心律是（）
A．正常心律
B．心房颤动
C．心房扑动
D．心室颤动
E．房性过早搏动
参考答案：B
解析：
由图看出：P波消失，心律不齐。
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in America is a time 1_______ the outdoors, no matter how hot it might be. Let's take a look at some of the popular drinks. Lemonade is 2_______ of all American summer drinks. It 3_______ by mixing lemon juice, water and sugar. It is usually served very cold, with ice. Ice tea is 4_______ popular summer drink in America. Ice tea is usually 5_______ in a tall glass of ice. Many Americans 6_______ to add sugar to sweeten the drink. This drink is often drunk in the afternoon 7_______ relaxing in the shade. Ice tea is now also sold by the bottle, at almost any store in America. The Slurpee, a famous American drink in recent years, is a great 8_______ to cool off in the summer heat. It is a mix of ice, sugar and fruit juices. However, the drink is mostly made of ice. They can 9_______ at most small convenient stores. Slurpees are popular with young Americans. Milkshakes have a long 10_______ in America. It is made of a mix of ice cream, milk and flavoring. |