问题 单项选择题

牙周炎致病的局部因素有

A.菌斑

B.牙石

C.食物嵌塞

D.不良修复体

E.咬合创伤

答案

参考答案:A,B,C,D,E

阅读理解

阅读理解。

                                                       

     TEN-YEAR-OLD Barack Obama was one of the only three black students at his school in Hawaii, US.

He felt very different from most other students. White girls wanted to touch his hair. A white boy asked

him whether his father ate people.

     "I lied (说谎) to them thin my father was a Kenyan prince (王子). But I kept asking myself who I am,"

said Obama.

     However, 37 years later, the boy made history. Last Wednesday Obama became the first black president

in US history.

     Obama was born in 1961. to an African father and a white American woman from a small town in the

US. He grew up in Indonesia and Hawaii. This unusual background made him wonder who he was. He once

turned to wines to help forget this question.

     With the help of his friends, Obama finally turned his life around at college. His hard work made him a

star at Harvard. Later, he became only the third black senator (参议员) in US history. During his race to the

highest post in the US. Obama talked about his background. He called for a United States of America, rather

than a white America or a black America.

     "Obama's success has made Martin Luther King's dream come true. That is: A man should not be judged

(判断) by the color of his skin (皮肤), but by the content of his character," wrote ABC news.

1. Where can we find this passage?

A. In a newspaper.

B. In a novel.

C. In a history book.

D. In a poster.

2. Why did Obama feel different from most other students at school?

A. Because white girls always touched his hair.

B. Because his father looked terrible.

C. Because there were few black students like him in the school.

D. Because his parents were both Africans.

3. we can infer (推断) from the passage that _____.

A. Martin Luther King fought for his dream and he succeeded.

B. Obama has the same dream as Martin Luther King.

C. Obama was once bothered (困扰) by the question where he was born.

D. Obama became the president at the age of 37.

4. In Obama's opinion, what would "a United States of America" be like?

A. It would be a country made up of fifty states.

B. It would be ruled by the black people.

C. It would be ruled by the white people.

D. It would be a country of all Americans.

5. What is the best title of this passage?

A. A Man who Changed American History.

B. Kenyan Prince.

C. A Top Student of Harvard.

D. Who Am I?

阅读理解

阅读理解

     Today, innovations(创新) to make our lives more eco-friendly can be found everywhere. There are

energy-efficient automobiles, eco-friendly light bulbs, and clothes made by fashion designers using

sustainable(可持续的) environmental practices. Industries around the world have also begun to take a

serious look at how their operations affect the local and global environment.

     The university of Colorado has been named one of the top green colleges and universities in the United States. This university was one of the first to start a student-led recycling program in the 1970s and today

supplies students with reusable shopping bags to use both on and off campus. The entire University of

Colorado also uses low flow water fixtures(设备) and has reduced water usage by 40 percent since 2002.

     When it comes to going green, Warren Wilson College has been recognized in many places. The

Sierra Club and The Princeton Review have named the college as one of America's greenest colleges and universities, while the school has also received the Outstanding College Recycling Award from the

Carolina Recycling Association, as well as awards from the Association for the Advancement of

Sustainability in Higher Education(AASHE). For a small college, Warren Wilson has made enormous

efforts to be an eco-friendly campus since its beginning, and today owns a campus farm, a seeding

program, and an extensive recycling program. Warren Wilson was also the first College to have an LEED platinum certified(白金认证的) residence hall, and its building services department is also 100 percent

GreenSeal certified. According to College Stats, Warren Wilson College is one of the first institutions in the United States to be almost completely self-sufficient(自给自足的) while also engaging students to

incorporate sustainability into all academic programs.

     Going green efforts at Oberlin College have not gone unnoticed. Oberlin College spends 22 percent of

its food budget on buying food from local farmers, with most of the food raised or harvested with organic

and sustainable practices. Oberlin has also stopped selling bottled water on campus and offers discounts to students who use their own storage containers when purchasing beverages and food items. Among

Oberlin's other eco-friendly accomplishments is a green graduation ceremony, which includes programs

printed on 100 percent recycled paper.

1.The author writes the first paragraph mainly to tell us that ____.

A. we can find new ways to be eco-friendly

B. everyone is aware of being eco-friendly

C. industries are reducing their influence on the environment

D. American colleges and universities care much about environmental issues

2.What do we know about the University of Colorado?

A. Its recycling program is followed by other universities.

B. It produces reusable shopping bags by itself.

C. It uses special systems to save water.

D. It is the most eco-friendly university.

3.Which of the following about Warren Wilson College is TRUE?

A. The Princeton Review praised it for its teaching methods.

B. Its residence hall's building material is platinum.

C. It owns a campus garden and a seeding program.

D. It sustains itself almost without help from others.

4.Students in Oberlin College can _____.

A. grow their own food on campus

B. pay less with their own containers

C. help the college make its food budget

D. recycle paper at their graduation ceremony

5.How is the text organized?

A. Main idea - Comparison.

B. Opinion - Discussion - Description

C. Introduction - Supporting examples.

D. Introduction - Explanation - Conclusion.