What can you do with eggs other than eat them?
Naked Eggs
What does an egg look like without its shell? You may be picturing the white and yolk in a bowl after cracking it, but that isn’t the only way to remove the shell.
Materials: an egg, white vinegar, a bowl, a spoon
Directions: Fill a bowl with one cup of vinegar. Add the egg to the bowl, and wait at least 24 hours. When you check it after a day, you’ll notice some bubbles on the egg and a residue (残留物) in the water. Use the spoon to gently remove the egg from the bowl. Dump out the old vinegar, and add a cup of fresh vinegar. Return the egg to the bowl, and wait another 24 hours. When you remove the egg this time, the shell should be completely dissolved. What remains will be the contents of the egg.
Walking on Eggshells
Can Eggs hold the weight of your entire body?
Materials: six cartons (硬纸盒) of eggs, a garbage bag
Directions: Place the garbage bag on the floor to make any necessary clean up easier. Place the cartons of eggs into two rows of three. Make sure all the eggs are pointing in the same direction— either all pointy end up or all rounded end up. Step onto the first carton of eggs carefully. Make sure your foot is as flat as possible and that you are distributing your weight evenly. If you’re careful, you will succeed. Eggs are actually incredibly strong. The arch shape at the top and the bottom of the egg allows pressure to be distributed evenly over the egg. If you were to place the eggs on their sides instead, you’d be likely to wind up with a gooey (胶粘的) mess.
1. In the first experiment, what causes the eggshell to dissolve?| A．Vinegar. | B．Water. | C．Bubbles. | D．Residue |
| A．The position of eggs. | B．The number of eggs. |
| C．The weight of eggs. | D．The distribution of eggs. |
| A．To persuade readers to use eggs in new ways. |
| B．To entertain readers with funny use for eggs. |
| C．To tell readers some ways to experiment with eggs. |
| D．To inspire readers to conduct experiments carefully. |
相似题推荐
【推荐1】Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy, as there's no need for a lot of scientific terms or expensive lab equipment.
Give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think.
Watch your language. Once you have a child involved in a science discussion, don t jump in with “That's right" or “Very good”.
What's more, giving them freedom to think can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target for your disagreement.
| A．It doesn't make sense |
| B．Listen to their questions |
| C．Teach them by examples |
| D．You only have to share your children's curiosity |
| E．It began with a set of questions that lasted nearly two hours |
| F．When adults increase their "wait time” to three seconds or more |
| G．These words work well when it comes to encouraging good behavior |
【推荐2】The best things in life might be free, but most things cost money. Being aware of how money gets spent will help kids make wiser decisions. When you teach your child about money, you’ll need to include several building blocks, such as how to value a dollar and how to earn money.
What Is Money?
Money is an accepted form of payment for goods and services.
Broadly speaking, you should teach your kids three main skills: how to identify, use and grow their money. These concepts (概念) might seem basic to adults, but kids won’t learn about them quickly without someone to teach them.
When Should I Teach Kids about Money?
Toddlers to school age (2-5): Counting from one to a hundred lays the foundation for understanding money, as does an ability to sort objects by shape and color, being independent, and imitating the actions of adults.
Middle childhood (6-8): Middle childhood money concepts rely on toddlers’ ability to start counting money, setting them up to learn the cost of money. Your child should already count coins and bills by the end of third grade.
Tweens (9-12): Tweens become more independent of the family wanting to receive (or earn) an allowance (零用钱) to do things they want with their friends.
| A．How Should I Teach Kids about Money? |
| B．What Should I Teach Kids about Money? |
| C．Currency is a particular system of money. |
| D．They may want to use the money to buy toys. |
| E．But the first step is teaching them the definition of money. |
| F．This sets a stage for them to understand what to and not to do with money. |
| G．You can teach your kids about money as soon as they learn not to put it in their mouth. |
【推荐3】How to Welcome Change in Your Life
Do you embrace (欣然接受) the road you are now on or resist and avoid change at all costs when a recent event has shaken you greatly?
Don’t react.
What do we do when we don’t know what to do? First, stop, take a deep breath and don’t do anything.
Reflect on the past.
Another activity is to recall times in your life when you were faced with an unknown. Then, think about how you handled the situation.
Make conscious decisions.
We often see fears as our greatest enemy, yet they provide us with an enormous opportunity for self-growth. What if we were to see them as friends who want to help us become a better person? Let your fears help you instead of hurting you. Then, write down what comes to you. You may be surprised by the answers.
| A．Don’t panic. |
| B．Befriend your fears. |
| C．When we are fearful, our options seem limited. |
| D．Then try to feel at ease with the state of “not knowing”. |
| E．Learning from past failures helps you make better decisions. |
| F．Remembering these incidents will remind you that you’ve gone through difficult situations. |
| G．Here are things you can do in the midst of uncertainty to choose differently to change the track of your life. |
【推荐1】Confident, smart and hightech, they’re followers of pop culture and know what social networking is all about. They’re tweens, children between the ages of 10 and 12. These young people are no longer little kids but they are not yet teenagers, because tweens are in a state of transition (转变).
The tween years are hard for children. From a social point of view, tweens are dealing with quite a lot. They have to face changing relationships, middle school and a whole lot of pressure (压力) to succeed and fit in. They may become angry over seemingly small things. A bad test grade, an argument with a friend, a bad day on the ball field, or a request to clean a bedroom might set them off.
Elizabeth HartleyBrewer, a parenting expert in London and author of Talking to Tweens, says, “The tween years are when young people begin to realize the wider world and to see themselves as the ones separate from their families.”
Right now, tweens’ friends are everything to them. It’s universal for the age, but they show it in different ways. For boys, the whole friendship thing is through technology and sports. Girls like to talk.
Tweens are also a hot market. What do tweens consider cool? Music is at the top of the cool list, followed by going to the movies. “Being smart” comes third, tied with video games, followed by electronics, sports, fashion and protecting the environment, according to a report. Undoubtedly, tweens have great spending power in the United States. It was the tween market that made Taylor Swift and Harry Potter household names. Retailers (零售商) know tweens are a hot market for clothes, music and entertainment. Tweens have their own sense of fashion and enjoy their own parts of popular culture.
1. Which word best describes the tween years?| A．Entertaining. | B．Unchanging. |
| C．Admirable. | D．Difficult. |
| A．make them annoyed |
| B．make them discouraged |
| C．cause them to run away from home |
| D．cause them to give up |
| A．Tweens remain dependent on their parents. |
| B．Friendship is very important in tweens’ eyes. |
| C．Retailers pay little attention to the tween market. |
| D．Playing video games is second to none on tweens’ cool list. |
| A．In a marketing report. |
| B．In an education magazine. |
| C．On a fashion website. |
| D．On a parenting poster. |
【推荐2】One morning, more than a hundred years ago, an American inventor called Elias Howe finally fell asleep. He had been working all night on the design of a sewing machine but he had run into a very difficult problem: It seemed impossible to get the thread to run smoothly around the needle.
Though he was tired, Howe slept badly. He turned and turned. Then he had a dream.He dreamt that he had been caught by terrible savages whose king wanted to kill him and eat him unless he could build a perfect sewing machine. When he tried to do so, Howe ran into the same problem as before. The thread kept getting caught around the needle. The king flew into the cage and ordered his soldiers to kill Howe. They came up towards him with their spears raised. But suddenly the inventor noticed something. There was a hole in the tip of each spear. The inventor awoke from the dream, realizing that he had just found the answer to the problem. Instead of trying to get the thread to run around the needle, he should make it run through a small hole in the center of the needle. This was the simple idea that finally made Howe design and build the first really practised sewing machine.
Elias Howes was not the only one in finding the answer to his problem in this way.
Thomas Edison, the inventor of the electric light, said his best ideas came into him in dreams. So did the great physicist Albert Einstein. Charlotte Bronte also drew in her dreams in writing Jane Eyre.
To know the value of dreams, you have to understand what happens when you are asleep. Even then, a part of your mind is still working. This unconscious(无意识的), but still active part understands your experiences and goes to work on the problems you have had during the day. It stores all sorts of information that you may have forgotten or never have really noticed. It is only when you fall asleep that this part of the brain can send messages to the part you use when you are awake. However, the unconscious part acts in a special way. It uses strange images which the conscious part may not understand at first. This is why dreams are sometimes called “secret messages to ourselves”.
1. The problem Howe was trying to solve was________.| A．what kind of thread to use |
| B．how to design a needle which would not break |
| C．where to put the needle |
| D．how to prevent the thread from getting caught around the needle |
| A．he also tried to invent a sewing machine |
| B．he got some of his ideas from dreams |
| C．he was one of Howe's best friends |
| D．he also had difficulty in falling asleep |
| A．strange images are used to communicate ideas |
| B．images which have no meaning are used |
| C．we can never understand the real meaning |
| D．only specially trained people can understand them |
Our present situation is unlike natural disasters of the past. Worldwide energy use has brought us to a state where long – range planning is vital. What we need is not a continuation of our present serious state, which endangers the future of our country, our children, and our earth, but a movement forward in order to work rapidly and effectively on planetary problems.
This country has been falling back under the continuing exposures of loss of morality and the revelation (揭露) that lawbreaking has reached into the highest place in the land. There is a strong demand for morality to turn for the better and for some devotion that is vast enough and yet personal enough to enlist the devotion of all. In the past it has been only in a way in defense of their own country and their own benefits that people have been able to devote themselves wholeheartedly.
This is the first time that we have been asked to defend ourselves and what we hold dear in cooperation with all the other people of this planet, who share with us the same endangered air and the same endangered oceans. There is a common need to reassess our present course, to change that course and to employ new methods through which the world can survive. This is a priceless opportunity.
To grasp it, we need a widespread understanding of nature if the crisis we and the world are facing is no passing inconvenience, no byproduct of the ambitions of the oil – producing countries, no environmentalists’ only fears, no byproduct of any present system of government. What we face is the result of the invention of the last four hundred years. What we need is transformed life style. This new life style can flow directly from science and technology, but its acceptance depends on a sincere devotion to finding a higher quality of life for the world’s children and future generation.
1. Which of the following has nearly destroyed our cities?
| A．The loss of beliefs and ideas. | B．More of law – breaking. |
| C．Natural disasters in many areas. | D．The rapid growth of motors. |
| A．seriousness of this crisis | B．ineffectiveness of laws |
| C．similarity of the past to the present | D．hopelessness of the situation |
| A．Disregard for law. | B．Lack of devotion. |
| C．Lack of understanding. | D．Destruction of cities. |
| A．make a recommendation for a transformed life style |
| B．limit ambitions of the people of the whole world |
| C．demand devotion to nature and future generation |
| D．encourage awareness of the decline of morality |
iPad mini with Retina display Small wonder Beautiful 7.9-inch Retina display iPad mini with Retina display is amazing to hold. Every photo is incredibly detailed, and every line of text is remarkably clear. With higher resolution (分辨率) than an HDTV, it’s striking—on a whole new scale. A7 chip Don’t let its size fool you. iPad mini is powered by the new A7 chip with 64-bit architecture. A7 delivers killer performance—up to four times faster CPU and up to eight times faster photograph performance than the previous generation—without sacrificing battery life. So you get incredible power in a device you can take with you wherever you go. Powerful apps (应用软件) iPad apps are like no other. Because they’re designed just for iPad, they look amazing and use every pixel (像素) of the beautiful display. iPad mini comes with great built-in apps for the everyday things you do, like checking email and surfing the web. Over 475, 000 other incredible iPad apps are just a tap away in the App Store. With apps like these, iPad mini can do just about anything—which means you can, too. Advanced wireless iPad mini keeps you connected faster than ever. Using two antennas (天线) instead of one and MIMO technology, iPad mini delivers twice the Wi-Fi performance of its ancestor. And the Wi-Fi+ Cellular model supports more LTE bands than ever, so you can make quick, easy connections the world over. iPad mini and iOS7 iOS7 was designed to take advantage of 64-bit architecture. So it’s every bit as advanced as the iPad mini it runs on. And with new features like smarter multitasking and AirDrop, iOS7 makes the experience of using iPad mini even more beautiful and simple. Because iOS7 and iPad mini weren’t just designed to work together, they were designed to enhance one another.
The Apple Store app for iPad. A whole new way to shop. Download now> |
| A．An Apple Store leaflet. | B．Apple Website. |
| C．A textbook of app designing. | D．A science magazine. |
| A．An amazingly clear display. | B．Beautifully designed and combined. |
| C．Well performing your daily routine. | D．A super killer and greater battery saver. |
| A．An A7 chip installed, iPad mini with Retina display is more battery consuming. |
| B．Having an iPad mini with Retina display, you can connect the world quickly and easily. |
| C．iOS7 with many new features is only designed for iPad mini with Retina display. |
| D．Order an iPad mini with Retina display online then collect it at your favorite retail store. |
【推荐2】We’re seeing travelers’ interest slowly increasing. Below are some of the trending experiences across Canada that are taking safety preventive measures or are good for avoiding crowds.
Jasper SkyTram (缆车)
Take your visit to Jasper National Park to new heights with this ride aboard the area’s famous Jasper SkyTram. Fly above the park, watching wildlife down below, as you gently climb towards the upper station located at 7,425 feet (2,263 m) above sea level. This family friendly ride on the Jasper SkyTram is the perfect experience for guests of all ages. Ride on the longest and highest guided aerial tramway in Canada.
1 Hour Bow River Ride
Set up for a journey through the celebrated landscape of Banff National Park on this guided horseback riding adventure. This horse themed journey includes a guide, use of a horse, and all necessary equipment. You can have a horseback ride through Banff National Park, where you can see natural hot springs. The guide will tell you the history of the national park.
Maligne Lake Cruise (乘船游览)
This fully narrated cruise takes you along Maligne Lake, the largest glacially fed lake in the Canadian Rockies, part of the UNESCO-listed Jasper National Park. Visit Spirit Island, accessible only by boat, and admire views of grand Granite Peaks, vibrant blue water, and ancient forests. Keep your camera close and your senses alert as you scan the area for the eagles, bears, and deer that call this area home.
Vancouver Seaplane Tour
Fly above the scenic city of Vancouver, enjoying a bird’s eye view of its picturesque harbor and nearby mountain peaks, on this 20-minute, small-group seaplane flight. Hop aboard your seaplane as you leave the tourist crowds in downtown Vancouver behind, as you glide above the city’s beautiful skyline and take in an aerial view of its Olympic facilities.
1. What can visitors do at Jasper National Park?| A．Take a bath in hot spring. |
| B．Take in an aerial view of its Olympic facilities. |
| C．Watch wildlife at a high altitude with their family. |
| D．Experience the longest aerial tramway in the world. |
| A．Jasper SkyTram. | B．1 Hour Bow River Ride. |
| C．Maligne Lake Cruise. | D．Vancouver Seaplane Tour. |
| A．By air. | B．On foot. | C．By bus. | D．By water. |
【推荐3】You can either travel or read, but either your body or soul must be on the way. The popular saying has inspired many people to read or go sightseeing. Traveling just like reading, is a refreshing journey from the busy world. Books, brain food, can keep you company on your travel.
On the Road, 1957, by Jack Kerouac
The book is a globally popular spiritual guide book about youth. The main character in the book drives across the US continent with several young people and finally reaches Mexico. After the exhausting and exciting trip, the characters in the book begin to realize the meaning of life. The book can be a good partner with you to explore the United States.
Life is Elsewhere, 1975, by Milan Kundera
Jean-Jacques Rousseau once said, “Man is born free, and everywhere he is in chains (链子).” The book tells a young artist’s romantic but miserable (痛苦的) life, about how he reads, dreams, and has a relationship. Experience the artist’s passionate (激情的) life in the book during a trip to Central Europe. The book invites you to deeply reflect on your current life.
The Stories of Sahara, 1967, by Sanmao
The book narrates the author’s simple but adventurous life in the Sahara Desert, which seems a desolate (荒凉的) and dull place. The fancy natural scenery and life there, along with the author’s romantic and intensive emotion, will inspire you to explore the mysterious land. Reading the book is like participating in a dialogue with the author, who is sincere and humorous.
Lotus, 2006 by Annbaby
This novel set in Tibet, tells three people’s stories, each with their unique characteristics. It shows modern people’s emotions and inner life, their confusion about love and exploration of Buddhism (佛教). The book is a good partner to bring you to the sacred (神圣的) land Tibet.
1. Which book can keep your company during a journey to America?| A．Lotus. | B．The Stories of Sahara. |
| C．Life is Elsewhere. | D．On the Road. |
| A．Jack Kerouac’s. | B．Milan Kundera’s. |
| C．Sanmao’s. | D．Annbaby’s. |
| A．To advertise four travel guidebooks |
| B．To arouse readers’ interest in reading |
| C．To recommend four books to read while traveling |
| D．To introduce four traveling novels set in Europe |
