问题
单项选择题
华支睾吸虫病在一个地区流行的关键是（）
A.病人、带虫者的存在
B.第一中间宿主淡水螺的存在
C.第二中间宿主淡水鱼、虾的存在
D.保虫宿主的存在
E.人群有生食或半生食淡水鱼、虾的习惯
答案
参考答案：E
解析：华支睾吸虫病在一个地区流行的关键因素是当地人群有生食或半生食淡水鱼、虾的习惯，如在东北地区，尤其朝鲜族居民常吃生鱼佐酒而感染。
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华支睾吸虫病在一个地区流行的关键是（）
A.病人、带虫者的存在
B.第一中间宿主淡水螺的存在
C.第二中间宿主淡水鱼、虾的存在
D.保虫宿主的存在
E.人群有生食或半生食淡水鱼、虾的习惯
参考答案：E
解析：华支睾吸虫病在一个地区流行的关键因素是当地人群有生食或半生食淡水鱼、虾的习惯，如在东北地区，尤其朝鲜族居民常吃生鱼佐酒而感染。
完型填空(10分) A student and his teacher are walking past a field. They 1 an old pair of shoes. The shoes are the old man’s. He’s 2 on the other side of the field. The student says, “Let’s 3 the shoes away. It will be funny when he 4 find his shoes.” The teacher says, “Don’t play a 5 on others. It may be funny for you, but 6 will he do without shoes?” Then the teacher puts some 7 into the shoes and says,” Let’s go behind the tree.” A few minutes later, the old man comes to 8 his shoes. When he finds the money, he looks around. No one is there. He cries and 9 ,”Thank you very much for the money! My wife is ill and my children have nothing to 10 .”
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