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问题 单项选择题

抗原分子诱导宿主产生应答的能力称为（）

A.宿主反应性

B.免疫原性

C.免疫反应性

D.抗原刺激性

E.免疫原性和反应原性

答案

参考答案：B

解析：免疫原性（immunogenicity）指诱导宿主产生免疫应答的能力，具有这种能力的物质称为免疫原。考点：决定免疫原性的因素

阅读理解

Sarah is from France. She lives in Paris. She can speak French and English, but she can’t speak Chinese. She has a pen pal in the United States. Her name is Jane and she lives in New York. Sarah’s favorite sport is basketball and she can play the guitar, too. Jane’s favorite sport is tennis. She can’t play the guitar, but she can play the piano and sing.

小题1:Sarah comes from _______.

A．France

B．Australia

C．the United States

D．the UK小题2:Jane is _______.

A．a Chinese

B．a Korean

C．an American

D．a Japanese小题3:What language does Sarah speak?

A.French  B.Chinese  C.English  D.A and C.

小题4:What is Sarah’s favorite sport?

A．Tennis

B．Soccer

C．Volleyballl

D．Basketball小题5:Which sentence is NOT right?

A. Sarah has a pen pal in the USA.

B. Sarah can play the piano and Jane can play the guitar.

C. Sarah and Jane like different sports

D. Jane lives in New York.
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问答题

根据下图回答有关问题：

（1）写出装置图中标有a的仪器名称______．

（2）实验室可采用加热高锰酸钾的方法制氧气，可将______装置（填标号）略作改进后，作为气体的发生装置；改进方法是______，写出此反应的文字表达式______．

（3）在用高锰酸钾制氧气的过程中，有下列主要操作步骤：①装入药品并固定装置；②用酒精灯加热；③检查装置气密性；④用排水法收集气体；⑤熄灭酒精灯；⑥从水槽中取出导管，正确的操作顺序是（填序号）______．

（4）氢气是密度最小的气体，收集氢气时可选用______装置（填标号）．
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