Recently some American scientists have given a useful piece of advice to people in industrialized nations．They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago．{#blank#}1{#/blank#}

    The scientists say that the human life has changed greatly．Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses．{#blank#}2{#/blank#}So they are called "diseases of civilization"．Many cancers and diseases of the blood system are examples of such diseases.

    Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none．{#blank#}3{#/blank#} However, a change in food is one of the main differences between life in ancient times and that of today.

 Stone Age people hunted wild animals for their meat, which had much less fat than domestic ones．They ate a lot of fresh wild vegetables and fruits．They did not have milk or any other dairy products, and they made very little use of grains．{#blank#}4{#/blank#} We eat six times more salt than our ancestors．We eat more sugar．We eat twice as much fat but only one third as much protein and much less vitamin C.

    {#blank#}5{#/blank#} But scientists say that we would be much healthier if we eat much the same way the ancient people did, cutting the amount of fatty, salty and sweet food.

 A．Modern people used to suffer from "diseases of civilization".

 B．People today probably don't want to live like our ancestors.

 C．These new sicknesses were not known in ancient times.

 D．Ancient people also got lots of physical exercise.

 E．In that case, they would live much healthier.

 F．But today, we enjoy eating a lot of these.

 G．Stone Age people lived a simple life.

Fitting in fitness

    Do you find excuses not to exercise? {#blank#}1{#/blank#} Here are a few ways to get you going.

Do what you love.

    The easiest way to fall into the habit of doing exercise is to choose an activity you enjoy — one that doesn't feel like exercise, even though it is. {#blank#}2{#/blank#} If you play to your strengths, you'll find fitness activities you can enjoy for years.

Choose your hour.

    Studies have shown that people who work out in the morning are most likely to stick with a routine. By doing exercise before the day starts, they can avoid the last-minute scheduling conflicts. But if you' re not a morning person, choose whatever time works best for you. {#blank#}3{#/blank#}

Call it by another name.

    {#blank#}4{#/blank#} If it's something you have to do anyway — like washing the car or planting some bushes in the yard — you'll achieve two goals at once.

Partner up.

    Exercise is more fun when you do it with others. {#blank#}5{#/blank#} On days when your motivation is low, you' re more likely to stick with the programme to avoid disappointing your exercise partners. You can also train with an expert. A personal trainer will help you set goals, design a personalized fitness programme, and vary your routine to keep it challenging.

    While the U.S. is still debating about getting rid of the penny, Sweden is rapidly moving towards abolishing currency altogether. Though this may sound radical(过激的), it is a natural evolution in this digital society.

    Sweden, which was the first European country to introduce banknotes in 1661, has just been working harder to convince its residents that digital payments are a safer alternative to carrying cash.

    Over the years, the idea has gained popularity with residents, especially the younger generation that is much more comfortable with technology. Today many banks don't even have ATMs and some have stopped handling cash altogether!

    Tickets to ride public buses in most Swedish cities can only be purchased via cell phones. Numerous businesses are also moving towards accepting only digital payments. Even the homeless that sell street paper to make ends meet have to start accepting this mode of payment!

    But despite its growing popularity, some people don't like this radical idea. They include the homeless, elderly people as well as those living in rural areas who are still uncomfortable with mobile phones and computers. But the officials are confident that in the very near future, they will be able to convince everyone to move this safe and more cost-effective payment system.

    Sweden is not the only country trying to abolish paper currency and coins. The movement is rapidly gaining ground in Denmark and Finland as well. In 2014, Israel announced a three-step plan to go cashless and just last week the vendors(小贩)of a popular street in Sydney declared they would stop accepting currency from customers. Whether this phenomenon spreads remains to be seen. But one thing is for sure—With increasingly advanced payment systems being introduced every day, pulling out cash is rapidly becoming “uncool”.

    Have you ever run out of coffee or tea? Found no eggs in the fridge? No bread for the sandwich and the nearest shop is too far away? Well, all that can change in the future.

    If all goes well, the intelligent future kitchen will soon help solve all your problems. In the future, all kitchen units will be connected to the Internet. The intelligent future kitchen will give wise advice on planning your menu for the day. Worried about your weight? — It will tell you the right diet and what is good for your health. It will even keep in mind your likes and dislikes!

    Designed by the Massachusetts Institute of Technology, this smart kitchen promises to pay attention to all your needs. The computer's system will help keep an “eye” on the fridge. If the fridge is empty, the kitchen will automatically call and place an order at the local supermarket. So you don't have to worry about it at all.

    You get home late, and don't know what to make from the collection of ingredients (原料) in your fridge. A while back you might have ordered a take-out but now, instead of worrying about eating a collection of this and that, you're excited. You can pull out each vegetable, and pass each one in front of a web camera next to your fridge. A few moments later, a screen on your fridge would display a tasty recipe.

    After dinner, you take your plates to a box next to the sink. You don't have to clean them, your machine does. It produces new plates every time you need to eat. Later in the evening, you phone your other half, who is on a business trip half-way around the world. As you drink your cup of hot coffee, it makes your other half's cup change color on the other side of the world, another special way to keep in touch.

    Have you ever heard someone say "You totally look like you're a Jessica" or something similar? People seem to think that they know what kind of person a "Jessica" or a "Michael" looks like. Why is this?

    According to a study published in the Journal of Personality and Social Psychology, humans tend to associate people's names with their appearances, and can even guess someone's name based on how they look.

    Researchers at the Hebrew University of Jerusalem, Israel, collected thousands of photos of people's faces. They labeled (贴标签于) each photo with four names. Then, they asked volunteers to guess which of the four names was correct.

    The volunteers were able to guess the right name 38% of the time. It seems that certain characteristics of faces give them clues about someone's name, Reader's Digest reported.

    However, this only worked when the volunteers looked at names from their own culture. In addition, the volunteers were not as good at guessing the real names of people who used nicknames(昵称)more often than their real names. This may show that a person's appearance is affected by their name only if they use it often.

    "This kind of face-name matching happens because of a process of self-fulfilling prophecy (预言), as we become what other people expect us to become," Ruth Mayo from tile university told science news website EurekAlert.

    Earlier studies have shown that gender (性别) and race stereotypes (刻板印象) can affect a person's appearance. The researchers believe there are also similar stereotypes about names. For example, people tend to think that men named Bob should have rounder faces because the word itself looks round. People may think that women named Rose are beautiful. They expect them to be "delicate" and "female", just like the flower they are named for.

    When athletes at the 2020 Tokyo Olympics collect their medals, they'll not only be wearing something that celebrates their sporting performance, but something that symbolizes lastingness. For both the 2020 Olympics and Paralympics, organizers aim to make all of the gold, silver, and bronze medals out of used electronics. This strong message about how to make use of e-waste has gotten a lot of Japan involved.

    Starting in April 2017, the Japanese Olympic Committee began collecting old laptops, digital cameras, smartphones, and other abandoned electronics. The initiative (倡议) has achieved great success. Already, the quantity needed for bronze medals has been met, and they're in the homestretch for silver and gold medals, meaning the collection process can pack up at the end of March.

    When looking just at the number of cell phones collected, the amount of waste is shocking. In a period of about 18 months, a little over 5 million smartphones were collected thanks to cooperation with NTT DOCOMO. Japan's largest mobile phone operator allowed the public to turn in phones at their shops, which counted a lot in the project's success.

    After being taken apart and sorted, the small electronics underwent a smelting process to extract (提炼) all the gold, silver, and bronze elements. Thanks to this initiative, the worldwide struggle with e-waste will have a global platform. According to a study published by the United Nations University—44.7 million metric tons of e-waste were made in 2016. Only 20% of that was actually recycled. Unfortunately, this figure is set to rise significantly in the coming years, moving to 52.2 million metric tons by 2021. So while the Tokyo Olympics initiative might be just a drop in the bucket, it's a good start in showing what the public can do if they're made more aware of the issue.