2017年6月大学英语四级短文阅读听力原文

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Passage One

Wild carrots probably evolved with the other flowering plants about 360 million years ago.

Like apples, carrots are native to Central Asia. That's why horses,

which also come from Central Asia, like both apples and carrots so much. With wild carrots,

the roots are white, small and skinny, so you'd have to pick a lot of wild carrots to get enough to eat.

Doctors used carrot seeds and roots as medicine, on the theory that foods that taste bad must be good for you.

Around 800 AD, people in Central Asia

managed to develop a new kind of carrot—a purple carrot—that attracted more interest from international traders. Then, in the late 1500s,

food scientists in the Netherlands

cultivated large, straight, sweet, red carrots like the ones we eat today.

But people still mostly fed carrots to horses,

donkeys and pigs, and didn't eat them themselves. In the 1600s,

people in China used carrots as medicine, but they also ate carrots boiled in soup. The red color was popular for Chinese New Year celebrations. But carrots got their biggest boost during the two world wars,

when food shortages forced people to eat them, and governments told everyone how healthy carrots were. Today, cooler countries

grow most of the world's carrots.

Machines do most of the planting and picking, and carrots are easy to store and ship, so they are cheap almost everywhere.

Questions 16 to 18 are based on the passage you have just heard.

16. What do we learn from the talk about wild carrots?

17. What does the speaker say about carrots in the late 1500s?

18. Why did people turn to carrots for food during the two world wars?

Passage Two

Katherine loved Facebook. With Facebook,

she could stay connected with her family no matter how far away they were. She could see their photos and read their status updates. With Facebook,

she could keep her relatives up-to-date on what she was doing.

Another thing Katherine loved about Facebook was that she didn't have to think about time zones when updating family.

Whenever she called her parents or other relatives, she always had to think about the time difference so that she wouldn't wake someone up or call when she knew they were at church. Facebook was so convenient.

When Katherine joined Facebook, some of her classmates at high school started to add her as a friend. At first, this didn't bother her.

She loved learning about the success of people she knew when she was just a teenager.

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