If you live in the U.S., you’re probably used to throwing banana peel into the trash. But people in other countries, including India, have been taking advantages of their nutritional benefits for many years.

While the flesh of a banana is soft and sweet, the skin is thick, hard and slightly bitter. To eat the peel, you can fry, bake, or boil it for at least 10 minutes. Also, the riper bananas get, the thinner and sweeter banana peel will become. That’s because of a natural plant hormone(激素) called ethylene(乙烯) that fruits release as they ripen. Ethylene interacts with the sugars and fiber in the banana skin, changing complex sugars into simple sugars and breaking down pectin, a form of fiber in bananas that keeps them stiff. That’s why the older your banana is, the flimsier(不結(jié)實(shí)的) it feels.

The sweet flesh of a medium-sized banana contains great percentages of your daily recommended intake of various nutrients, such as:

·12% of your daily fiber, which helps with digestion and may help lower your risk of diabetes(糖尿病)

·17% of your vitamin C, which is important for your immune system as well as your growth

·20% of your vitamin B6, which aids the body’s ability to turn food into energy

·12% of your potassium, which helps with the development of cells, tissues, and organs throughout the body

If you eat the skin along with the flesh, you will get an even bigger increase in these same nutrients.

Eating the peel is not only good for your body but also better for the earth. The average American ate 11.4 pounds of bananas in 2014. Since a medium-sized banana weighs about 0.3 pounds, that equates to about 38 bananas per person, or about 12 billion for the whole of the U.S. And since most of us throw away the peel, that also means a lot of organic waste.

1.We can learn from the text that in the U.S. people ________.

A. like eating bananas

B. waste a lot of food every year

C. don’t make good use of banana peel

D. know little about the value of the flesh of bananas

2.What’s the role of ethylene in bananas?

A. Helping bananas grow faster.

B. Making banana peel stay strong.

C. Keeping banana flesh from going bad.

D. Helping to soften and sweeten banana peel.

3.Which of the following helps humans digest?

A. Vitamin C.B. Potassium.C. Vitamin B6.D. Fiber.

4.The last paragraph mainly shows that eating banana peel benefits our ________.

A. dietB. economyC. environmentD. physical health

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015-2016學(xué)年江西上高縣第二中學(xué)高一下期末英語卷（解析版） 題型：七選五

根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中有兩項(xiàng)為多余選項(xiàng)。

Here are some tips that will help you get rid of anxiety over being phoneless or reduce your risk of phone addiction.

Disable the Internet connection. Take up your courage to disable the Internet connection on your smartphone. 1. Needless to say, you will save o lot of cash on it.

Find your passion. 2. Find your dream job and you will leave your “best friend” at least for a while. If you have nothing to do at home, try a new hobby that will distract you from all those apps and social media.

Purchase an ordinary phone. No smartphones. No iphones. Remember those times when we used phones in emergency situations only or when we wanted to invite someone to a party. 3.

Don’t let the fear control you. 4. Claim your joy. I can only speak for myself here, but I think that a smartphone is one of the worst inventions. It’s useful and helpful at times, but it has ruined many happy lives and relationships. That’s because we allow our phones to control us.

5. The fear of being phoneless is a serious problem. It’s like drug or cigarette addiction. If you want to change your life, sell your expensive smartphone, buy an ordinary one, and become a sociable person. There are so many wonderful people that can bring joy into our life. Chatting online is great, but chatting in real life is best.

A. Free your mind.

B. Choose other electronic devices.

C. Keep your mind sharp and alert.

D. Beat your social butterfly wings.

E. Those who love their jobs never feel exhausted and bored.

F. Thus, you’ll spend less time with your phone and more time in real life.

G. I bet some of you remember times when few people had a phone at home.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年湖南師大附中高一下學(xué)期期末英語試卷（解析版） 題型：閱讀理解

A man came home from work and found his three children outside， still in their pajamas(睡衣) playing in the mud，with empty food boxes and wrappers thrown all around the front yard.

The door of his wife's car was open，as was the front door to the house and there was no sign of the dog.

Walking into the entry，he found an even bigger mess. A lamp had been knocked over. In the front room the TV was loudly blaring(大聲播放)a cartoon channel，and the family room was thrown with toys and various items of clothing.

In the kitchen，dishes filled the sink，breakfast food was spilled on the counter，the fridge door was open wide， dog food was spilled on the floor，a broken glass lay under the table，and a small pile of sand was spread by the back door.

He quickly headed up the stairs，stepping over toys and more piles of clothes，looking for his wife. He was worried she might be ill，or that something serious had happened. He was met with a small drop of water as it made its way out the bathroom door. As he looked inside he found wet towels， soap and more toys thrown over the floor. Miles of toilet paper lay in a heap(堆) and toothpaste had been put over the mirror and walls.

As he rushed to the bedroom， he found his wife still sleeping in the bed in her pajamas，reading a novel. She looked up at him，smiled，and asked how his day went. He looked at her puzzled and asked， “What happened here today？”

She again smiled and answered，“You know every day when you come home from work and ask me what in the world I did today？”

“Yes，” was his reply.

She answered，“Well，today I didn't do it.”

1. When the man got home from work， he found .

A. everything was in good order

B. the house was in a great mess

C. his wife was seriously ill in bed

D. his car and house were broken into

2. What can we know from the passage？

A. The dog was opening the door of the car.

B. The children were playing in the room.

C. The TV set was on，broadcasting a children's program.

D. The fridge door was left open with dog food in it.

3. What did the man think might have happened？

A. There must have been a thief.

B. He must have forgotten to lock the door.

C. An important guest must have come.

D. His wife must have fallen ill.

4. The wife didn't do the housework .

A. because she hated it

B. because she was tired of it

C. to show the importance of her job

D. to show her anger with her husband

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年河北唐山一中高二下學(xué)期期末英語試卷（解析版） 題型：閱讀理解

The Cambridge Science Festival Curiosity Challenge

Dare to Take the Curiosity Challenge!

The Cambridge Science Festival Curiosity Challenge Dare to Take the Curiosity Challenge! The Cambridge Science Festival (CSF) is pleased to inform you of the sixth annual Curiosity Challenge. The challenge invites, even dares school students between the ages of 5 and 14 to create artwork or a piece of writing that shows their curiosity and how it inspires them to explore their world.
Students are being dared to draw a picture, write an article, take a photo or write a poem that shows what they are curious about. To enter the challenge, all artwork or pieces of writing should be sent to the Cambridge Science Festival, MIT Museum, 265 Mass Avenue, Cambridge 02139 by Friday, February 8th.
Students who enter the Curiosity Challenge and are selected as winners will be honored at a special ceremony during the CSF on Sunday, April 21st. Guest speakers will also present prizes to the students. Winning entries will be published in a book. Student entries will be exhibited and prizes will be given. Families of those who take part will be included in the celebration and brunch will be served.
Between March 10th and March 15th, each winner will be given the specifics of the closing ceremony and the Curiosity Challenge celebration.The program guidelines and other related information are available at: http://cambridgesciencefestival.org.

1.Who can take part in the Curiosity Challenge?

A. School students. B. Cambridge locals.

C. CSF winners. D. MIT artists.

2.When will the prize-giving ceremony be held?

A. On February 8th . B. On March 10th.

C. On March 15th. D. O n April 21st.

3.What type of writing is this text?

A. An exhibition guide. B. An art show review.

C. An announcement. D. An official report.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年貴州都勻一中高二下學(xué)期開學(xué)考英語試卷（解析版） 題型：完成句子

單句填詞

1.John Snow (懷疑)____________ that the second theory was correct but he needed evidence.

2.It seemed that the water was to （責(zé)備）______________.

3.For (便利)______________ the city London is divided roughly into three zones.

4.St Paul’s Cathedral looked (壯麗的)____________ when first built.

5.The capsule began swinging gently (側(cè)著)__________ as we lay relaxed and dreaming.

6.You have to listen carefully. (同時(shí))__________ you have to prepare the next question.

7.He tried to stop us (發(fā)表)__________ it but later we were proved right.

8.“Did he really do that ?” asked someone from the International News (部門)__________.

9.The three layers of skin act as a barrier against diseases, poisons and the sun’s (射線)______.

10.Examples include (嚴(yán)重的)_________ sunburn and burns caused by hot liquids.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年廣東仲元中學(xué)高二下學(xué)期期中英語試卷（解析版） 題型：單項(xiàng)填空

The small factories___________ the fall of the prices.

A. benefited B. benefited from

C. benefited to D. benefited in

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年廣東仲元中學(xué)高二下學(xué)期期中英語試卷（解析版） 題型：單項(xiàng)填空

Having a trip abroad is certainly good for the old couple, but it remains______ whether they will enjoy it.

A. to see B. to be seen C. seeing D. seen

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年廣東仲元中學(xué)高二下學(xué)期期中英語試卷（解析版） 題型：閱讀理解

In 1800, only three percent of the world's population lived in cities. Only one city — Beijing — had a population of over a million. Most people lived in rural areas, and never saw a city in their lives. In 1900, just a hundred years later, roughly 150 million people lived in cities, and the world’s ten largest cities all had populations exceeding one million. By 2000, the number of city dwellers exceeded three billion; and in 2008, the world's population crossed a tipping point — more than half of the people on Earth lived in cities. By 2050, that could increase to over two-thirds. Clearly, humans have become an urban species.

In the 19th and early 20th centuries, many people viewed cities negatively — crowded, dirty environments full of disease and crime. They feared that as cities got bigger, living conditions would worsen. In recent decades, however, attitudes have changed. Many experts now think urbanization (城市化) is good news, offering solutions to the problems of Earth’s growing population.

Harvard economist Edward Glaeser, author of The Victory of the Cir, is one such person. Glaeser argues that cities are very productive because “the absence of space between people” reduces the cost of transporting goods, people, and ideas. While the flow of goods has always been important to cities, what is most important today is the flow of ideas. Successful cities enable people to learn from each other easily, and attract and reward smart people with higher wages.

Another urbanization supporter is environmentalist Stewart Brand. Brand believes cities help the environment because they allow haft of the world’s population to live on about four percent of the land. This leaves more space for open country, such as farmland. City dwellers also have less impact per person on the environment than people in the countryside. Their roads, sewers, and power lines need fewer resources to build and operate. City apartments require less energy to heat, cool, and light. Most importantly, people in cities drive less so they produce fewer greenhouse gases per person.

So it’s a mistake to see urbanization as evil; it’s a natural part of development. The challenge is how to manage the growth.

1.What is Paragraph 1 mainly about?

A. The history of modern cities.

B. Changes taking place within cities.

C. How cities have grown over time.

D. Why modern cities are changing.

2. How have experts’ attitudes towards cities changed in recent decades?

A. They now view the weaknesses as strengths.

B. They no longer see city-riving as attractive.

C. They accept city life in spite of its problems.

D. They think city-riving provides more benefits.

3. Which of the following would Edward Glaeser agree with?

A. Cities provide more economic opportunities.

B. City people get along better with each other.

C. Over-crowded cities result in problems.

D. Cities limit the flow of ideas.

4.According to Paragraph 4, what would be the result of moving people out of cities?

A. Economic production would be reduced.

B. There would be less farmland available.

C. People would travel less frequently.

D. House values would fall greatly.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年河北省秦皇島盧龍縣高二下期末考試英語試卷（解析版） 題型：單項(xiàng)填空

People have views on the policy published recently. Not everybody is in favor of it.

A. surprised B. excited C. frightened D. mixed

查看答案和解析>>

同步練習(xí)冊(cè)答案