验钞机是利用荧光物质在______线的照射下能够发光的原理制成的；家中的电视遥控

Mrs. Thompson came to the 5^th grade class and noticed that Teddy was always alone. Also, he did badly in his studies．When she reviewed Teddy’s past records，she find he was a good child at first，but he began to change when his mother got ill. Finally he lost interest in school after his mother’s death.

Mrs. Thompson realized the problem and felt sorry for him．She felt even worse when her students brought her beautifully-covered Christmas presents．His presents were covered with some old paper. Some children laughed when she found a bracelet(手镯)with some of the stones missing, and a bottle with a little perfume(香水). But she said how pretty the bracelet was, putting it on, and dabbing some perfume on her hand．Teddy stayed after school for a long time just to say，“Mrs. Thompson，today you smelled just like my mom used to.”After the child left，she cried for quite a long time.

On that very day，she taught not only knowledge but also children. As she worked with Teddy，his mind seemed to come alive. By the end of the year，Teddy had become one of the smartest children in the class.

A year later，Teddy left school. She found a note under her door，from Teddy，saying that she was the best teacher he ever had in his life. After that, these words were repeated in each of his letters to her.

Then after he finished college, Teddy wrote telling her that he had met a pretty girl and was going to get married. He explained that his father was dead，and that he wondered if Mrs. Thompson might sit at the wedding in the place for the mother of the groom(新郎).

Of course，Mrs. Thompson did. She wore the bracelet and the perfume that Teddy remembered his mother wearing on their last Christmas together．

They hugged(拥抱)each other，and Teddy whispered in Mrs. Thompson’s ear，“Thank you，Mrs. Thompson，for making me feel important，and showing me that I could make a difference．”

Mrs. Thompson，with tears in her eyes，whispered back，“Teddy，it’s not like that. You were the one who taught me that I could make a difference. I didn’t know how to teach until I met you.”

小题1:What made Teddy change before Mrs. Thompson came?

A．His mother’s illness and death.

B．His classmates’’ laughing at him.

C．His past records by his teachers.

D．His interest in some other things.小题2:Teddy left a note for Mrs. Thompson when he left school mainly to say _______.

A．sorry

B．hello

C．thanks

D．goodbye小题3:What kind of person was Mrs. Thompson?

A．Wise and humorous.

B．Kind and helpful.

C．Selfish and impatient.

D．Strict and stubborn．小题4: We can learn from the passage that _______.

A．Mrs. Thompson became Teddy’s mother at last.

B．Mrs. Thompson didn’t know how to teach all her life.

C．Teddy didn’t finish college before he got married.

D．Mrs. Thompson and Teddy each made a difference.

氢气是一种高能燃料，下列微粒中能保持氢气化学性质的最小粒子是（　　）

A．H

B．H⁺

C．H₂

D．H₂O

《政府采购货物和服务招标投标管理办法》规定，对投标保证金的正常返还表述正确的有( )。

A．招标采购单位应当在中标通知书发出后5个工作日内退还未中标供应商的投标保证金

B．招标采购单位应当在中标通知书发出后5日内退还未中标供应商的投标保证金

C．招标采购单位应当在中标通知书发出后5个工作日内退还未中标和中标供应商的投标保证金

D．在采购合同签订后5个工作日内退还未中标和中标供应商的投标保证金

E．在采购合同签订后5个_T作日内退还中标供应商的投标保证金

关于常减压蒸馏装置常压转油线产生腐蚀主要原因的分析，正确的是（）。

A.转油线部位流速大，主要是冲刷腐蚀

B.产生腐蚀的主要原因是原油中含氯元素造成

C.产生腐蚀的主要原因是原油中含微量金属造成

D.产生腐蚀的主要原因是原油中含盐造成

正常心电轴为（）

A.0°～90°

B.90°～120°

C.0°～30°

D.-90°～±180°

E.-30°～-60°