牙列缺失后，颌骨的改变主要表现为（） A.颌骨的增生 B.颌骨的吸收 C.颌骨的移位

A: 阅读下面材料，从每题所给的三个选项（A、B和C）中，选出最佳选项。

Michelle Obama	From March 20 to 26, the US first lady was on a trip to China with her daughters and mother. She met China’s first lady Peng Liyuan in Beijing. They went to the Forbidden City and had dinner together. Then they went to Xi’an and Chengdu. Michelle gave a speech at No. 7 High School in Chengdu, talking about the importance of education.
Jiang Wenshan	He’s a 32-year-old man who was born without his left arm. He entered a university with a high score in “Gaokao”. He often takes part in volunteer activities to help others like him. He traveled to more than 60 cities by selling his dreams online. Jiang not only sold his dreams, he also “sold” his courage. He has helped many other disabled people realize their dreams.
Wang Changdian	Wang, 63, is a retired(退休) policeman in Lushan, Ya’an, Sichuan. After the Lushan earthquake that killed 176 people took place on April 20, 2013, Wang volunteered to work in Qingjiang, a mountain village in Siyan to help the villagers rebuild homes.

小题1:What did Michelle do at No. 7 High School in Chengdu?

A. She gave a speech on education.

B. She had dinner with China’s first lady.

C. She talked with a retired teacher.

小题2:We can learn from the passage that Jiang Wenshan ______.

A. is a man of 30 years old

B. failed to enter a university

C. always helps disabled people

小题3:Jiang Wenshan traveled with the money he made by ______.

A. teaching in different schools

B. selling his dreams online

C. working in a mountain village

小题4:Wang Changdian went to Qingjiang Village to ______.

A. help to rebuild homes for the villagers

B. work as a volunteer teacher

C. meet his daughters and mother

小题5:Which of the following is True according to the passage?

A. The US first lady went to visit China with her husband.

B. Jiang Wenshan was born without his right arm.

C. Wang Changdian used to work in a police station.

若x₀²+y₀²+Dx₀+Ey₀+F＞0，则点P（x₀，y₀）在圆x²+y²+Dx+Ey+F=0的______．

下列各组词语中加点字的读音，与所给注音全都相同的一组是（    ）

A．扁biǎn扁平看扁了扁舟扁鹊

B．给jǐ给养给予给以家给户足

C．冠guān皇冠冠心病衣冠楚楚冠盖相望

D．应yìng应变应届应承得心应手

下述各功能中，属于性能管理范畴的功能是______。

A．网络规划和资源管理功能

B．工作负载监视功能

C．运行日志控制功能

D．测试管理功能

依据不同的投资来源或( )，计划利润率实行差别利润率。

A．企业性质

B．企业等级

C．工程类别

D．企业等级或工程类别