肠道病毒不包括（） A.脊髓灰质炎病毒 B.EV71 C.甲型肝炎病毒 D.HDV

已知：3Cl₂+6KOH5KCl+KClO₃+3H₂O，发生氧化反应和还原反应的物质其物质的量之比为 （   ） 

A．1：2

B．3：1

C．5：1

D．1：5

阅读理解

     It was Thanksgiving morning. I was busy preparing the traditional Thanksgiving turkey when the

doorbell rang. I opened the front door and saw two small children in rags huddling together on the top

step.

     "Any old papers, lady?" asked one of them.

     I was busy. I wanted to say "no" until I looked down at their feet. They were wearing thin little sandals(凉鞋), wet with heavy snow.

     "Come in and I'll make you a cup of hot cocoa."

     They walked over and sat down at the table. Their wet sandals left marks upon the floor. I served them cocoa and bread to fight against the cold outside. Then I went back to the kitchen and started cooking.

     The silence in the front room struck me. I looked in. The girl held the empty cup in her hands, looking

at it. The boy asked in a flat voice, "Lady, are you rich?"

     "Am I rich? Pity, no!"

     I looked at my wornout slipcovers(椅套). The girl put her cup back in its saucer(茶碟)carefully and

said, "Your cups match your saucers." They left after that, holding their papers against the wind. They had

reminded me that I had so much for which to be grateful.

     Plain blue china cups and saucers were only worth five pence. But they matched.

     I tasted the potatoes and stirred(搅动)the meat soup. Potatoes and brown meat soup, a roof over our heads, my man with a regular job, these matched, too.

     I moved the chairs back from the fire and cleaned the living room. The muddy marks of little sandals

were still wet upon my floor. Let them be for a while, I thought, just in case I should begin to forget how

rich I am.

1. Which of the following would be the best title for the text?

A. Lady, are you rich?

B. A story of Thanksgiving Day

C. Don't forget how rich you are

D. Does cups and saucers match well?

2. The writer let the two children come in and served them well because________.

A. she wanted to sell old papers to them

B. she wanted to invite them to her Thanksgiving party

C. she showed great pity and care on them

D. she had the same experience as them in the past

3. Which of the following statements is NOT true according to the passage?

A. The girl thought the writer was rich just because she wanted to make the writer happy.

B. The writer had thought she wasn't rich because her supplies were not expensive.

C. If cups and saucers match well, they are a best pair even though cheap.

D. After hearing what they said, the writer seemed to understand what a rich life was.

4. The writer left the muddy marks of little sandals on the floor for a while to________.

A. show that she was a kindhearted lady

B. remind her that she shouldn't forget how rich she was

C. leave room for readers to think about what being rich is

D. prove that she had understood what meant being rich

5. It can be inferred from the text that whether you are rich depends on________.

A. how much money you have made

B. what attitude you have had towards life

C. the way you help others

D. your social relationship

由于成本增长引起的通货膨胀指的是下列哪一项？（）Ⅰ.成本推动型通货膨胀Ⅱ.供应方通货膨胀Ⅲ.需求方拉动型通通货膨胀Ⅳ.需求方通货膨胀正确的选项为

A.只有Ⅰ

B.Ⅰ和Ⅱ

C.只有Ⅲ

D.Ⅲ和Ⅳ

下背痛预防措施中错误的是（）。

A.下蹲拾物

B.不能猛然回头

C.蛙泳

D.穿高跟鞋

E.腰背肌锻炼时放松

出现烧、烫伤情况后，应立即直接用大量清水冲洗、降温，随后到医疗机构处理。