题干

阅读资料回答下列问题.

2013年初春,流感家族中的一位不速之客﹣﹣H7N9不期而至,拨动着中国内地民众的神经.H7N9型禽流感是一种新型禽流感,3月底在上海和安徽两地率先发现.H7N9禽流感病毒是全球首次发现的新亚型流感病毒,被该病毒感染均在早期出现发热等症状.截至2013年5月16日16时,全国已确诊130人,36人死亡,72人痊愈.迄今为止,没有迹象表明H7N9病毒已发生人际间传播,目前没有疫苗.据国家疾控中心网站介绍,勤洗手、室内勤通风换气、注意营养、保持良好的体质,有利于预防流感等传染病,特别注意尽量避免直接接触病死禽、畜。

(1)H7N9病毒从传染病角度分析属于该病的____ (填“病原体”或“传播途径”),病毒没有____ 结构。

(2)从预防传染病措施看,勤洗手、室内通风换气,这属于____ (填“控制传染源”或“切断传播途径”);对临床诊断为H7N9型禽流感患者进行隔离治疗,这属于____ (填“控制传染源”或“切断传播途径”)。

(3)若H7N9型禽流感疫苗研发成功,注射的疫苗从免疫学角度分析属____ (填“抗原”或“抗体”),它可以提高人体免疫力,这种免疫类型属于____ (填“特异性免疫”或“非特异性免疫”)。

(4)为防治H7N9型禽流感,某些同学自己购买了板蓝根冲剂,其包装袋上印有“OTC”字样,这种药属于____ (填“处方”或“非处方”)药。

上一题 下一题 0.0难度 选择题 更新时间:2010-04-20 03:11:51

答案(点此获取答案解析)

病原体,细胞,切断传播途径,控制传染源,抗原,特异性免疫,非处方

同类题5

完型填空。

Tom and Steve were twin brothers. Tom loved to play basketball. But Steve loved to read books. One day Tom was playing basketball    21  he fell and broke his leg. When they took him to the hospital, the doctor said he wouldn’t be able to play for six months. Steve went    22  him to and brought him books on basketball. At first Tom wasn’t going to read them. Then he began to read them and 23 that there were ways he could play basketball better. He began to think that books weren’t    24  .

    When Tom’s leg started getting better, Steve would help him by going for walks with him.  25 Tom’s doctor said he could start playing basketball again. Then Tom showed Steve how to toss(投)for baskets. Steve found that he enjoyed it.

    Then Tom was ready to   26   the basketball games. Steve went to watch the games and enjoyed himself. They then    27   practiced basketball and read books together.

    So you can see, when    28    happens, something good may also happen. Steve showed Tom about books and Tom showed Steve about basketball.

So you can also   29   showing others something that you like to do and they can show you something that they like to do. 30 you can find new things to do.

21A. until              B. when            C. after           D. where

22A. on seeing          B. to call            C. to visit         D.to look

23A. saw              B. looked            C. read           D. found

24A. good             B. bad              C. better           D. worse

25A. But              B. However          C. Finally         D. So

26A. take              B. win              C. lose            D. join in

27A. always            B. never            C. seldom          D. much

28A. anything good      B. something nice     C. something bad   D. anything wrong

29A. try               B. practice           C. enjoy          D. like

30A . On the way       B. By the way        C. In a way       D. In this way