问题 单项选择题

下列属于人体免疫第二道防线的是()

A.皮肤

B.黏膜

C.体液中的溶菌酶

D.T细胞

答案

参考答案:C

解析:皮肤和黏膜是人体免疫第一道防线,故A错。体液中的溶菌酶属于人体免疫第二道防线,故C正确。T细胞是特异性免疫的细胞,为人体免疫第三道防线,故D错。考点:本题考查免疫相关知识,意在考查考生能理解所学知识的要点,把握知识间的内在联系能力。

阅读理解

阅读理解。

     If you can speak English, you know a lot of English words. You can read, speak and understand. But

there is another kind of language you need to know – the language of the body.

     All over the world, people"talk" with their hands, with their heads and with their eyes. When Japanese

people meet, they bow. When Indians meet, they put their hands together. What do Americans and British

people do?

     Americans are more informal (不拘礼节的) than the British. They like to be friendly. They use first names,

ask questions and talk easily about themselves. When they sit down, they like to relax in their chairs and make

themselves comfortable.

     British people are more reserved (矜持的). They take more time to make friends. They like to know you

before they ask you something of your home.

     When British and American people meet someone for the first time, they shake hands. They do not usually

shake hands with people they know well. Women sometimes kiss their women friends, and men kiss women

friends. When a man meets a man friend, he just smiles, and says "Hello". Men do not kiss each other or hold

hands. Even fathers and sons do not often kiss each other.

1. Indian people usually ________ when they meet.

A. bow to each other

B. put their hands together

C. shake hands and say hello to each other

2. It's easier to make friends with Americans because ________.

A. they are more outgoing

B. they make themselves comfortable

C. they like to rest in their chairs

3. British people take more time to make friends because ________.

A. they are slow to show their feelings

B. they don't like people to go to their homes

C. they find it more interesting to stay alone

4. In the USA and Britain, ________.

A. People usually shake hands with their friends

B. men always kiss their women friends when they meet

C. women are more likely to kiss each other while men aren't

单项选择题