问题
单项选择题 A1型题
患者一侧节段型分布盼痛觉、温度觉消失，而触觉保留，应定位于
A．脊髓后角
B．脊髓后索
C．脊髓丘脑侧索
D．大脑额叶中央后回
E．脊神经后根
答案
参考答案：A
解析：脊髓后角的病变可以累及痛温觉传导通路的二级神经元，而深感觉通路并不从此走行，不受影响。所列的其他部位病变均不能引起分离性感觉障碍。
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患者一侧节段型分布盼痛觉、温度觉消失，而触觉保留，应定位于
A．脊髓后角
B．脊髓后索
C．脊髓丘脑侧索
D．大脑额叶中央后回
E．脊神经后根
参考答案：A
解析：脊髓后角的病变可以累及痛温觉传导通路的二级神经元，而深感觉通路并不从此走行，不受影响。所列的其他部位病变均不能引起分离性感觉障碍。
Hundreds of years ago, life was harder than it is today. People didn’t have modern machines. There was no medicine, either. Life today brings new problems. One of the biggest is pollution. Water polluti  on has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and we become angry more easily. Air pollution is t he most serious kind of pollution to all living things in the world.Cars, planes and factories all pollute our air every day. Sometimes the polluted air is very thick. People cannot see the sky clearly  .Many countries are making rules to fight against pollution. Factories now must clean their water before they throw it away. And they mustn’t let dirty smoke go into the air. There are many things we can do to fight against pollution. We should put waste things in dustbins and do not throw them on the ground. We should go to work by bike or on foot instead of taking a car or a bus. If there are fewer people driving, there will be less pollution. Ru  les are not enough. We should do our best to fight against pollution.小题1:Which of the following is NOT true about life in the past?
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