题目内容

It is bad to have food stuck between your teeth for long periods of time. This is because food attracts germs(细菌), germs produce acid, and acid hurts your teeth and gums. Flossing(使用牙线) helps to remove the food that gets stuck between your teeth. This explains why flossing helps to keep your mouth healthy, but some doctors say that flossing can be also good for your heart.

It may seem strange that something your do for your teeth can have any effect on your heart. Doctors have come up with a few ideas about how flossing works to keep your heart healthy. One idea is that the germs that hurt your teeth can leave the mouth and travel into your blood. Germs that get into the blood can then attack your heart. Another idea is based on the fact that when there are too many germs in your mouth, the body tries to fight against these germs. For some reason, the way the body fight these mouth germs may end up weakening the heart over time.

Not every doctor agrees about these ideas. Some doctors think that the link between good flossing habits and good heart health is only a coincidence. The incidence(发生率) of two or more events is completely random, as they do not admit of any reliable cause and effect relationship between them. For example, every time I wash my car, it rains. This does not mean that when I wash my car, I somehow change the weather. This is only a coincidence. Similarly, some doctors think that people who have bad flossing habits just happen to also have heart problems, and people who have good flossing habits just happen to have healthy hearts.

The theory that flossing your teeth helps to keep your heart healthy might not be true. But every doctor agrees that flossing is a great way to keep your teeth healthy. So even if flossing does not help your heart, it is sure to help your teeth. This is enough of a reason for everyone to floss their teeth every day.

1. From the passage, we know that_____

A. food stuck between your teeth may hurt your teeth

B. all of the doctors agree that flossing is good for your heart

C. doctors’ judgment about flossing is based on medical research

D. not every doctor thinks flossing helps to keep your teeth healthy

2.The underlined sentence in Paragraph 3 is to____.

A. Provide an example

B. Make a comparison

C. Introduce a new topic

D. Develop a previous statement

3.Which of the following best states the main idea of the last paragraph?_______.

A. It is a fact that flossing can help your heart as well as your teeth.

B. There is no good reason to believe that flossing will help your heart.

C. Because doctors find flossing won’t help your heart, it is useless to floss.

D. Even if flossing is only good for your teeth, you should still do it every day.

4.Which is the best title for the passage?

A. Flossing by Coincidence

B. How to Keep Your Teeth Healthy

C. Flossing Habits and Healthy Hearts

D. Why Doctors Disagree about Flossing

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Hundreds of years ago, Native-American tribes lived in Mexico. The Aztecs built beautiful cities. They had a calendar (历法) and a written language. However, the Spanish destroyed the Aztecs in l521. For the next 300 years, Spain ruled over Mexico. That’s why Mexicans speak Spanish.

Every September l6 the Mexican people hold a celebration in Mexico City, their country’s capital. It is their Independence Day. On that date in 1821 they told Spain they would no longer be ruled. Breaking free from Spain caused a war. When it was over, the Mexicans had their own government. They made their own laws.

Today America and Mexico are friends, but it wasn’t always that way. President James Polk wanted America to reach from the Atlantic Ocean to the Pacific Ocean. He tried to buy what is now the American southwest from Mexico. Mexico would not sell. So from l846 to 1848 Mexico and America fought a war to ascertain where their borders would be. When the war ended, Mexico had lost a lot of land. Now the Rio Grande River forms the border between the two nations. America is on the north side of the river. Mexico is on the south side.

Mexico has mountains and a hot, dry climate. Crops can grow on only a small part of the land. Still, Mexicans grow much of the coffee, oranges, and sugar used in the US. Mexicans have influenced building styles in southwestern US and added words such as patio and canton to American English. Americans also enjoy eating many Mexican foods like burritos, tacos, tortillas, and tamales.

1.According to the passage, what happened second on historical timeline?

A. Mexicans declared their independence from Spain.

B. The Spanish ruled Mexico.

C. The Aztecs lived in Mexico.

D. Americans fought a war with Mexico.

2.The passage says that President Polk wanted ______.

A. the US to expand its borders to the Pacific Ocean

B. Mexico to change its Independence Day to July 4th

C. Mexico to become one of the states of the Union

D. Americans to adopt the Mexican language

3. Another word for the underlined word “ascertain” is ______.

A. inspect B. cover

C. change D. determine

4.Mexicans have the following influences on America EXCEPT ______.

A. building styles B. vocabulary

C. clothes D. food

5.Before the Aztecs were conquered(征服), these Native Americans probably ______.

A. didn’t speak Spanish

B. couldn’t read or write any language

C. didn’t have tools

D. didn’t understand the concept of time

Nowadays, more and more schools in China have rules making students wear school uniforms to School .A lot of Chinese students complain about__1. (wear) their school uniforms every day But2. American students get annoyed about their uniforms, too? American high schools usually have a dress code,__ 3. is about requirements for students' dressing. Boys at school must wear clean jackets every day. Girls are__4. (luck) than boys, they have more flexible_5. (choose) than boys. They can either dress similarly to the boys__ 6. wear a dress. In general, it takes a student 10-15 minutes every morning__7. (dress) up for class. As students do in China, plenty of American students also have their complaints about school uniforms. What if students really dislike the dress code and want to get rid of it? Instead of getting punished,__ 8. (actual) there're ways to do that. At my school, "dress down" tickets__9. (sell) on school days If students are willing to buy a ticket, they don't need to wear school uniforms the following day. I have a strong_10. (believe) that one day Chinese students can buy these tickets, too

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏词符号（/\），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1、每处错误及其修改均仅限一词；

2、只允许修改10处，多者（从第11处起）不计分

A discussion about hiking had been held in our class. Some students think that hiking during vacations can make people feel healthier, fresher or more harmonious with the nature. They find themselves deep attracted by the beauty of nature. They can also be relaxing by walking in deep mountains. But nowadays some hikers even begin to explore the places people have ever been to, and accidents have happened now and then because poor knowledge of hiking. Some hikers even lost their life. The other students in our class think not safe to organize such dangerous activities. They make suggestions which laws should be passed and hikers should be trained before they attend the activities.

Both of Jessica’s parents were lawyers and expected her to follow suit. So she went to law school, got a job at a great firm in Washington, DC, and worked as a lawyer for a decade. But her heart was never in it. “I had a big salary but no personal satisfaction,” she says.

Jessica found pleasure in the same thing that had brought her joy since joining the church choir at the age of 12. “Singing always felt like communicating something real at a spiritual and emotional level,” says Jessica. Yet she never considered it a career option. “That seemed like something people did in fairy tales, and I would never let my parents down,” she says.

It was her mom’s diagnosis of brain cancer in 2009 that made Jessica realize she had to write her own happy-ever-after. “Work was busy and my mother was ailing. So I was flying back and forth from Washington, DC to Houston to see her,” Jessica says. “I finally said, ‘Enough!’ and quit.” While caring for her mom, Jessica made a plan. She would spend her savings and study music for a year, and then open a part-time law practice so she could pursue her passion. Before her mother passed away two years later, she encouraged Jessica to follow her dream. Her song Live This Life was inspired by her mom, and her dad came to watch her perform at clubs.

In 2012, Jessica moved to Nashville to try singing and songwriting. A decade of presenting cases in court gave her the confidence to sing for a crowd. “At 20, I would have been too shy to perform,” says Jessica.

“Doing music is so free,” Jessica says. “There’s no pressure to be a star. Success, to me, isn’t a dollar amount or a record deal; it’s doing what I love.”

1.Which of the following is TRUE?

A. Jessica wasn’t satisfied with the pay she got as a lawyer.

B. Jessica didn’t know what she truly loved for ten years.

C. Jessica didn’t really like working as a lawyer.

D. Jessica was grateful for her parents’ arrangement for her.

2.What does the underlined word “ailing” in Paragraph 3 mean?

A. Crazy.B. Sick.

C. Worried.D. Unhappy.

3.What was Jessica’s mother’s attitude toward her singing?

A. Supportive.B. Doubtful.

C. Negative.D. Unknown.

4.By telling Jessica’s story, the writer most probably wants to _______.

A. show that family members’ support is important

B. show that singing can be a practical career

C. tell us the importance of choosing a right job

D. encourage us to pursue our dreams

Your answer is not acceptable, and _____.

A. so am I B. so I am

C. neither is mine D. mine is neither

You will recognize Jane when you see her at the airport. She _____ a large blue bag.

A. carries B. is carrying

C. will be carrying D. has carried

—Susan, go and join your sister cleaning the yard.

—Why ____? John is sitting there doing nothing.

A. him B. he C. I D. me

Out of for the homeless children he gave them shelter for the night.

A.pity B.shame C.sympathy D.mercy

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