氢气球上升到一定高度时往往会自动破裂掉，其原因是（ ） A．高空中温度低，气球被

On February 9^th, 2013, Sarah Darling was walking along the street when she met a homeless man named Billy Ray Harris. She reached into her change purse, emptied out all the coins she had and gave them to the homeless man. Neither of them realized that this small generous act would change their lives.

Sarah didn’t realize that she had given Billy not only all her change but also her diamond ring that she had put in her change purse earlier until the following morning. She and her husband, Bill Krejci, rushed to see if they could find Billy. The homeless man was not only in the same place, he also immediately returned the ring. The grateful couple paid him back for his honesty by emptying out their pockets of all the money they had.

Bill Krejci, a web designer, felt that he needed to do something more for this amazingly honest man. So on February 18^th, he set up a special page to raise money for him. In just four days, Billy received over $85,000 and there seems to be no end yet.

That is not enough. Billy is living with a person who is generous instead of living in the streets. And that’s not all—Thanks to the news report, he got together again with his older brother, Edwin Harris who he had been unable to find for 27 years.

All the good luck is just because Billy did the right thing—returning something that did not belong to him.

小题1:When did Sarah realize that she had also given Billy her diamond ring?

A．On February 9^th, 2013

B．On February 10^th, 2013

C．On February 18^th, 2013

D．On February 22^nd 2013小题2:Which of the following is NOT mentioned in the passage?

A．Billy is living with a generous person.

B．Billy has found his brother.

C．Billy bought a diamond ring.

D．Billy appeared in the news report小题3:The underlined word “That” in Paragraph 4 refers to(指代) “________”.

A．returning the ring

B．setting up a page

C．living in the streets

D．receiving money小题4:What’s the best title of the passage ?

A．Generous Woman Changed Her Own Life

B．Kind Man Set Up Special Page

C．Homeless Man Returned Diamond Ring

D．Many People Donated Much Money

对乙酰氨基酚为

A．解热镇痛药

B．抗精神失常药

C．抗震颤麻痹药

D．麻醉性镇痛药

E．镇静催眠药

（）储罐属于按不同结构形式划分的储罐。

A．固定顶

B．卧式圆柱形

C．浮顶

D．无力矩

根据汉语提示完成下列句子。

1. I don't keep in touch with her, because I lost her ______ ______ (电话号码).

2. The young lady receives a ______ ______(金戒指) from a rich man on Valentine's Day (情人节).

3. ______ ______ (打扰了), where can l wash my hands?

4. I know the ______ ______ the girls (女孩的书包) are very expensive.

5. The supermarket is ______ ______ (紧挨) the library.

一种由MHV引起的，临床表现为肝炎、脑炎和肠炎。多数情况下里亚临床感染或隐性感染，但在应激因素作用下和机体抵抗力下降时容易急性发病和死亡的疾病是小鼠（）

A、淋巴细胞性脉络丛脑膜炎

B、鼠痘

C、仙台病毒感染

D、鼠肝炎。