关于脊髓灰质炎的描述不正确的是（）。 A.脊髓灰质炎主要病变为脊髓侧索中运动神经纤维
题型：单项选择题 A1/A2型题
问题：
关于脊髓灰质炎的描述不正确的是（）。
A.脊髓灰质炎主要病变为脊髓侧索中运动神经纤维变性、坏死
B.脊髓灰质炎病毒属于肠道病毒
C.典型的临床表现是非对称性下运动神经元性瘫痪
D.好发于婴幼儿，故又称小儿麻痹症
E.脊髓灰质炎病毒以粪-口感染为主要传播方式
题型：单项选择题 A1/A2型题
| 完形填空。 In the last 500 years, several million people have been killed by earthquakes. Among all the earthquakes, the 1976 Tangshan Earthquake is regarded as the 1 one in the twentieth century. On July 28, 1976, a terrible earthquake of 7.8 magnitude (级) 2 Tangshan City, Hebei Province. In just one second, the city with one million people was destroyed. The earthquake was __3 strong that even Beijing and Tianjin were seriously affected (受到影响). The shock was felt in 14 provinces and cities-one-third of the country. The earthquake took place 4 midnight. Most people could not take any actions.  Over 240,000 people 5 and about 170,000 were seriously injured. Water supplies, communications and traffic were completely cut off. The people there needed 6 immediately. But they could not wait for help 7 . They formed groups to dig for others. They set up medical areas and tents. They searched for food and clean water. Recovery(恢复)was not easy with so much 8 . Yet, after a lot of care was given in time, the rebuilding of Tangshan began almost 9 . Though it took time, the whole city was rebuilt and is 10 home for over a million people, earning (赢得)Tangshan the name "Brave City of China". | ||||
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