问题
单项选择题
老年心力衰竭患者症状加重的最常见诱因是（2004）
A．过度劳累
B．摄入液体过多
C．心肌缺血
D．室性期前收缩
E．呼吸道感染
答案
参考答案：E
解析：解析：老年心力衰竭患者症状加重的最常见诱因是感染、心律失常和治疗不当。这三个方面是常考的知识点。
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老年心力衰竭患者症状加重的最常见诱因是（2004）
A．过度劳累
B．摄入液体过多
C．心肌缺血
D．室性期前收缩
E．呼吸道感染
参考答案：E
解析：解析：老年心力衰竭患者症状加重的最常见诱因是感染、心律失常和治疗不当。这三个方面是常考的知识点。
Which of your two hands do you use most? Very __ of us can use both of our hands equally（相等的） well. ___of us are right-handed. Only about five _out of a hundred are left-handed. New-born babies can hold things __either of their hands, but__ about two years they usually like to use their right hands. Scientists don’t know _ this happens.They _ that we inherited(遗传) this from our animalvancestors(祖先)but this may not be _ .Monkeys are our closest relatives(亲戚)in the animal _ . Scientists have found that monkeys prefer to use one of their hands more than ___ --,but it can be __ hand. There are as many right-handed monkeys_ _ left-handed ones . Next time you visit the zoo, ___ the monkeys carefully. You’ll see that some of them will use their left hands. But most human beings use their right hands _ and this __ life difficult for the left-handed people. We live in a right-handed world.
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