问题 填空题 案例分析题

如图表示人体免疫某一过程的示意图,分析并回答有关的问题。

已知图一中所示物质d由4条多肽链组成,呈Y型,其中含有3个二硫键(—SH+—SH→—S—S—+2H),若此物质由100个氨基酸组成,已知氨基酸的平均相对分子质量为128,此物质的相对分子质量约是()

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参考答案:11066

阅读理解

阅读短文,回答下列问题。

     John Brown, an office worker, lives in Washington. He inherited his father's $1,000,000 when he was 23.

He didn't feel happy at all. His college friends were looking for their first jobs, but he didn't have to. John

decided to keep living a simple life like everyone else. He didn't tell any of his friends and gave $100.000 of his

money to a charity that helped poor children live better lives. Today he is 36,and he still wears cheap shoes and

clothes and owns a small car only, but he is much happier. Up to now John has helped 15 children from poor

countries all over the world, $200 a month for each. The child does not receive the money in cash (现金).The

money pays for the child's school expenses, food, medicine care and clothes. John receives a re- port each year, but usually the children do not speak English. When John first heard about these children, he wanted to help the

m. "It was not anything special," he said. "Until I had the chance to go to these countries and meet the children

I was helping, I did not know anything about their type of life they had." Once John went to meet a little girl in

Africa. He said that the meeting was very exciting. "When I met her, I felt very, very happy," he said. "I saw

the money was used for a very good plan. It brought me closer to the children in a way that giving money alone

can-not." "I want to do everything I can I will go on helping these children in need," he added.

1. What kind of life is John living?

    _______________________________________________________________________

2. What's the Chinese meaning of the word "inherited"?

    _______________________________________________________________________

3. Did John want to find a job or stay at home after he got the money?

    _______________________________________________________________________

4. Does John only help the poor children in Africa? 

    _______________________________________________________________________

5. How do you like John Brown? 

    _______________________________________________________________________

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