（）是《邮政法》规定的邮政专用品。A、袋牌 B、铅志 C、信盒 D、邮袋

根据汉语写出单词。

1. 圣诞灯 ____________    2. 圣诞贺卡 ____________     

3. 礼物 ____________       4. 圣诞老人 ____________     

5. 节日 ____________ 

阅读理解

     It amazed me-every time I saw Joe he was smiling.It didn't matter whether he had to stop at a stop

light,or if he was the seventh person in line at the bank,and the teller (出纳员) ended her job just before

he got there.Joe always smiled.It made me wonder why he always seemed so happy.

     Having observed Joe with other people,I noticed something else too.Joe asked people how they were doing,and really seemed to listen to their answers.He showed pity tosomeone who was hurting,and had

kind words,and offered to help in any way he could.

     It made me think.What if I tried to smile more?An experiment began when I went to the supermarket.

I smiled as I went up and down the supermarket and people I didn't even know smiled back at me.Some

even spoke!The little kid in the cart who was giving his mother a hard time saw me smile；he stopped

talking and then made a shy attempt at a smile.The man in the cart for the disabled needed help to reach

for something,and I got it for him.The smile even transferred (转移) over to him,and he thanked me.

     As I drove home,I was smiling.Now I know a smile is a small thing,but what if we all tried to smile a

few more times each day?I couldn't believe how great I felt.Nothing in my life had changed,but maybe it

had.What I had learned was that such a small thing could lift not only my spirits,but also the spirits of those around me.So smile!

1. What did the writer wonder?

A. Why bad things never happened to Joe.

B. What kind of person Joe was.

C. Why Joe always seemed so happy.

D. How to be as happy as Joe.

2. What do we know about Joe from Paragraph 2?

A. He has nothing to worry about.

B. He lives a very hard life.

C. He is kind and ready to help others.

D. He often asks others to smile.

3. What experiment did the writer do?

A. He smiled at others in the supermarket.

B. He bought people things in the supermarket.

C. He helped anyone who needed help.

D. He said kind words to others.

4. According to the passage,how was the writer's experiment?

A. It was a failure.  

B. It proved nothing.

C. It was unacceptable.  

D. It was quite satisfying.

5. The writer wrote this passage most probably to________.

A. explain why people smile

B. tell us something about Joe

C. tell us the true meaning of life

D. suggest people smile more to others

口腔颌面部最常见的感染病原菌是

A．单纯需氧菌感染

B．单纯厌氧菌感染

C．需氧菌和厌氧菌混合感染

D．单纯真菌感染

E．单纯病毒感染

下列关于票据法律关系的表述中，正确的有（）

A、当持票人向主债务人主张债权遭到拒绝时，可向次债务人行使追索权，请求支付票款及利息和有关费用

B、付款请求权和付款义务属于票据权利和义务的第二个层次

C、追索权和偿付义务属于票据权利和义务的第一个层次

D、本票的出票人和收款人属于基本当事人

E、票据法律关系的主体包括：出票人、收款人、付款人、持票人、承兑人、背书人、保证人

下列元素中能作为葡萄糖耐量因子的是（）

A.铬

B.镉

C.铊

D.汞

E.铅