14.Questions 12 to 15 are based on the conversation you have just heard.
A. It looks older than expected.
B. It is built of wood and bricks.
C. It stores lots of priceless antiques.
D. It has walls decorated with jewels.
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15.Questions 12 to 15 are based on the conversation you have just heard.
A. Their streets are narrow.
B. They are mostly crowded.
C. Each one has a unique character.
D. Life can be tedious in some places.
据统计,“党中央到达陕北之前,陕甘宁边区每年死亡八九万人,病死率为( ),其中儿童妇女死亡最多。”
A. 20%
B. 40%
C. 60%
D. 80%
据边区各医疗机关的深入调查与边区防疫委员会的整理分类,把边区盛行的传染病分为了( ),常见传染病以及常见病、地方病三大类
A. 急性传染病
B. 恶性传染病
C. 烈性传染病
D. 慢性传染病
下列传染病中不属于烈性传染病的是( )。
A. 鼠疫
B. 霍乱
C. 伤寒
D. 天花
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