问题
单项选择题 A1/A2型题
关于流脑的易感性错误的是（）.
A.由于从母体获得抗体，6个月内的婴儿很少发病
B.成人发病较少，因可在多次流行中隐性感染获得免疫力
C.在流行期间发病年龄可向高年龄组移动
D.感染后免疫力持久，各群间交叉免疫力持久
E.儿童发病率高，特别是5岁以下（6个月至2岁）的婴幼儿发病率最高
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
关于流脑的易感性错误的是（）.
A.由于从母体获得抗体，6个月内的婴儿很少发病
B.成人发病较少，因可在多次流行中隐性感染获得免疫力
C.在流行期间发病年龄可向高年龄组移动
D.感染后免疫力持久，各群间交叉免疫力持久
E.儿童发病率高，特别是5岁以下（6个月至2岁）的婴幼儿发病率最高
参考答案：D
| 完形填空。 | |||
| There was once a man who was very rich but very tight-fisted(吝啬的) at the same time. Nobody 1 him in the village. One day he said to them,"l know you don't like me. When I 2 , I will give everything to you.Then everyone will be 3 ." Even then nobody believed him. The rich man couldn't 4 why they didn't believe him. One day he went for a walk. Under a tree he happened to hear a pig and a cow 5 . The pig said to the cow, "Everybody likes you 6 nobody likes me. Why? When I provide people with meat, ham (火腿) and so on,I give three or four things to them. But you give only one thing-milk. Why do people like you 7 and not me?" The cow answered," Look, I give them milk while I'm 8 .They see that I am generous(慷慨的)with what I 9 .But you don't give them anything while you're alive. Only after you're dead do you give meat, ham and so on. People don't believe in the 10 ,they believe in the present(现在). If you give while you are alive, people will like you. " From that moment on,the rich man wasn't tight-fisted any more. Everyone began to like him. And he felt quite happy. | |||
| ( )1. A. believed ( )2. A.die ( )3. A. frightened ( )4. A. agree ( )5. A. crying ( )6. A. because ( )7. A. sometimes ( )8. A.alive ( )9. A.like ( )10. A. lifetime | B.liked B.leave B. happy B. understand B.laughing B. so B. all the time B.dead B.have B. competition | C. hated C.return C. angry C. remember C. singing C. and C. at the beginrung C.busy C.eat C. friendship | D. knew D.arrive D. safe D. forget D. talking D. or D.in the end D.free D.say D. future |