1 . Foods of the Future

We asked young scientists to write an advertisement that answers this question: How will food options, food availability, and individuals’ food choices change in the future? A selection of their suggested marketing campaigns is below. Read previous NextGen Voices survey results at http://science.sciencemag.org/collection/nextgen-voices. — Jennifer Sills

Personalized Meal Plans

Send us your DNA, and we will predict your food preferences! Receive your personalized food basket, with a day-by-day diet program. We will send you full meals and personalized smoothies (水果奶昔) based on your genetic taste tendency.

Ada Gabriela Blidner

Twitter:@adagbb

Fresh Fruit

If you miss sweet temperate fruits, welcome to our Moon Farm. Our fruit trees are planted in hybrid-soil and artificial air that reproduce Earth’s environment from 5000 years ago. Pick fruits with your family or ship to your doorstep with MoonEx. Freshness guaranteed.

Yongsheng Ji

Email: jiyongshengkey@hotmail.com

Meat

Our steaks are sourced from natural grasslands, where cattle now fill the ecological roles. With FoodFootprint feeding system, we enhance natural grazing (放牧) to improve animal growth effectively while minimizing methane production and water consumption. At only $219.00/kg (including carbon taxes and ecological taxes), our steaks are affordable for the whole family.

Falko Buschke

Email: falko. buschke@gmail. com

1. Which of the following needs you to provide the information of your genes?

A．Meat.	B．Fresh Fruit.
C．NextGen Voices.	D．Personalized Meal Plans.

2. Who should you contact if you want to have fun with your family?

A．Jennifer Sills.	B．Yongsheng Ji.
C．Falko Buschke.	D．Ada Gabriela Blidner.

3. Which of the following best describes the steaks in Meat?

A．Fresh.	B．Green.
C．Expensive.	D．Personalized.

2 . The meaning of the word “volunteer ” may be a little different in different countries, but it usually means “one who offers his or her services.” There are many different ways in which people can volunteer, such as taking care of sick people, working in homes for homeless children, and picking up garbage(垃圾) from beaches and parks. Volunteers may work within their own countries or in other countries. They are often people with a strong wish to help those who are less fortunate than themselves. Volunteers don’t expect any kind of pay.
At the root of volunteering is the idea that one person may have the ability to offer services that can help other people. Tracy, a good friend of mine, however, recently came back from India with a ____ of what being a volunteer means. She worked for two and a half weeks in one of Mother Teresa’s homes in Calcutta. The following is her story.
“I first heard about Mother Teresa in my high school, we watched a video(录像) about her work in India and all over the world. I was so moved by her spirit to help others and her endless love for every human being that after I graduated from high school, I too wanted to try her kind of work. So with two friends I flew to Calcutta for a few weeks.”
“I was asked to work in a home for sick people. I helped wash clothes and sheets, and pass out lunch. I also fed the people who were too weak to feed themselves and tried to cheer the up. I felt it was better to share with them than to think that I have helped them. To be honest, I don’t think I was helping very much. It was then that I realized that I had not really come to help, but to learn about and experience another culture(文化) that helped improve my own understanding of life and the world.”
1. According to the text, a volunteer refers to a person who ______.

A．is willing to help those in need without pay	B．can afford to travel to different places
C．has a strong wish to be successful	D．has made a big fortune in life

2. Tracy started her work as a volunteer _______.

A．after she met Mother Teresa

B．after she finished high school

C．when she was touring Calcutta

D．when she was working in a hospital

3. Why did Tracy choose to be a volunteer?

A．She liked to work with Mother Teresa.

B．She had already had some experience.

C．She was asked by Mother Teresa’s example.

D．She wanted to follow Mother Teresa’s example.

4. What is Tracy’s “new idea” (Paragraph 2) of being a volunteer?

A．Going abroad to help the sick.

B．Working in Mother Teresa’s home.

C．Doing simple things to help the poor.

D．Improving oneself through helping others.

3 . They say there are three ways to experience the Grand Canyon; on foot, on mules(骡子) or by air. We chose the first. Up early, my husband and I and our three children couldn't wait to get started. We decided to walk along a lovely path named Bright Angel Trail.

As we set out, I was shocked at how narrow the path was. And I couldn't help noticing that the other tourists weren't like us. They had heavy backpacks, water bottles, and hats. But as usual we were dressed. As the sun rose higher, Arizona's famous heat seemed to roast us. There was no shade and our legs were aching. We decided to go back, with the girl on my back and the boys far behind. By the time we finally got back, our legs were like jelly.

The next day, after we'd had a long rest and a good breakfast, we were ready for another view of the Canyon—by air. After our last walk, this would be the easiest thing in the world.

We called to each other excitedly as the plane took off and circled around the Canyon. But the smiles on our faces disappeared as the pilot tossed(翻转) the plane around, pretending he was going to hit the ground. I shouted, "STOP, TAKE US BACK!" When we finally arrived back on land, once again our legs were like jelly. We hardly spoke as we drove back.

As I said, there are three ways to view the Grand Canyon. We never tried the mules, but personally I'd suggest a fourth: buy yourself a good magazine like National Geographic. That way, you can see the Canyon, without fear or tiredness.

1. Which of the following is true according to the second paragraph?

A．They made a careful preparation before the trip.

B．The children were more joyful than their parents.

C．Bright Angel Trail was not as lovely as they expected.

D．The summer heat prevented them from enjoying the view.

2. The underlined expression "Our legs were like jelly" probably means ______.

A．we were weak	B．we were unhappy
C．we were dissatisfied	D．we were disappointed

3. Which of the following best describes their Canyon trip by air?

A．It proved to be frightening.	B．It was more comfortable.
C．It turned out to be exciting.	D．It made each of them tired.

4. We can infer from the passage that ____.

A．experiencing the Canyon on mules would be the best way

B．one needs to dress less when visiting the Grand Canyon

C．the writer was not serious when she made the suggestion

D．the whole family narrowly escaped from the air accident