DNA is in every cell ( 细 胞 ) of our bodies except for our red blood cells. It stores the information your body needs to make you who you are. Your DNA is 99.5% the same as everyone else on the planet. The 0.5% that we don't share with everyone else is the bit that makes you different.

DNA is the mysterious code ( 神秘密码 ) of life. It not only decides your gender ( 性别 ) and appearance, but also tells you about your family history, as well as your relations with people in other parts of the world.

Last fall, 20 students at Coretta Scott King Young Women's Leadership Academy in Atlanta learned more about who they are through a DNA test.

During their life sciences class, the girls took samples ( 样本) from their cheeks and sent them to Living DNA, a UK—based DNA testing company. From the test results, they learned about their ancestry ( 祖先 ) and made real-world connections to their races.

Lizbeth Islas, 12, learned about her family's Central American roots ( 根,根源 ) from her mother, who is Guatemalan ( 危地马拉人 ). She expected to share DNA with 54% of Native American people, but she was surprised to ?nd that she also shared DNA with people living in Africa and Europe.

Elianed Guzman, 13, knew little about her family except that they were from Mexico. She was surprised to learn that she also shared DNA with people in China and Japan.

The girls gathered in small groups to wait for their results. Their reactions reached from confusion to surprise. The 13-year-old Amariah Caudle said she learned that "the color of your skin can't decide where you are from."

Diahan Southard, a manager from Living DNA, helped them understand the test results. "Does it change how you see yourself?" Southard asked.

"Now I know I have family from everywhere," said Jahtmya Phillips, 13. "Does it change how you see the girls around the table?" Southard asked. "We are all sisters," said Anike Akanni-Jenkins, 13.

Laura Pena, the school's class designer, said she hopes to add DNA testing to the school's ninth grade curriculum ( 课程 ) in the future. "This is not a lesson they will forget anytime soon," she said.

1.Which of the following about DNA is NOT TRUE according to the passage?

A.DNA decides your gender and appearance.

B.DNA can tell you about your family history.

C.99.5% of your DNA is different from other people.

D.DNA can ?nd your relations with people in other parts of the world.

2.Guzman shares DNA with people in .

A.Africa B.Australia C.Europe D.Asia

3.What did the students learn from the program?

A.People need to accept who they are.

B.Everyone in the world is connected to others.

C.We should learn more about our family history.

D.People's personalities can be explained by their roots.

I was beginning to grow handsome. My coat was bright and black, I had one white foot and a pretty white star on my forehead. When I was four, Squire Gordon decided to buy me. Then Farmer Grey began to break me in.

Like all horses that have grown up, I had to wear gears (用具). The first is a bit and bridle. I hated wearing a bit in my mouth. It was horrible, like a metal finger between my teeth. The saddle was not so bad. One morning, my master rode me round the meadow. I was proud to carry him, and I soon got used to it. But I didn’t like the iron shoes. They were very stiff and heavy on my feet. But in time I got used to that too.

My mother told me, “There are good men like our master, but there are bad men too. I hope you have good masters. But remember; always do your best.”

Early in May, a man came to take me away to Squire Gordon's house, in the village of Birtwick. My new stable (马厩) was large and comfortable. There was a little fat grey pony next to me. His name was Merrylegs. And I also found a tall chestnut horse at the corner of the stable, quiet.

“That's Ginger," Merrylegs told me. "She bites. One day she bit James, the groom (马夫). She says no one was kind to her before. But James and John, our grooms, are very good to us, and Squire Gordon doesn't whip (鞭打) his horses, so I think she's going to like it here."

The next morning John took me for a ride. On the way back, we met Squire Gordon and Mrs. Gordon.

"Well, John, how does he go?” the Squire asked.

“Excellent, sir." John answered.

Mrs. Gordon said, "He's a beauty. Let's call him Black Beauty."

(取材于扬州市“五个百工程”指定书目《黑骏马》)

1.The underlined phrase "break in" in Paragraph 1 means ________ in Chinese.

A.出售 B.奖励 C.骑 D.驯服

2.To grow up, Black Beauty had to wear ________ gears.

A.two B.three C.four D.five

3.What's the aim of mother's words in Paragraph 3?

A.To warn Black Beauty to follow his masters. B.To encourage Black Beauty to keep hope.

C.To ask Black Beauty to fight against others. D.To remind Black Beauty to find freedom.

4.Which of the following is TRUE according to the passage?

A.Black Beauty is named after his mother. B.Merrylegs doesn't like his grooms.

C.Ginger is new in the village of Birtwick. D.Squire Gordon often whips his horses.

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