Ebola is a dangerous virus that can cause people to get very sick and even die. The virus is causing the biggest problems in western Africa, where it has spread quickly. {#blank#}1{#/blank#} But it can get worse and cause life-threatening symptoms(症状), such as bleeding and trouble breathing.

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    Ebola does not spread like colds or the flu because it does not float through the air. Ebola also doesn't spread through food or water, like some other viruses. Instead, Ebola spreads when someone touches the body fluids(液体) of a sick person.

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    An outbreak is when many people are getting sick with the same illness around the same time. You may have heard of a flu outbreak, which is when lots of people get sick from the same types of flu virus. When an outbreak happens because of a virus, more people could get sick because there is a lot of that virus around.

    Where did Ebola come from?

    Scientists aren't sure how the first person gets Ebola at the start. {#blank#}4{#/blank#}Tropical animals in Africa believed to carry the virus include great apes, chimpanzees, gorillas, monkeys, fruit bats, porcupines, and forest antelopes.

    What do kids need to do about Ebola?

    Ebola is making many people sick in Africa, but no matter where you live, it's always a good idea to wash your hands well and often. {#blank#}5{#/blank#}

A. How do people catch Ebola?

B. But they think that people may pick up the virus by touching or eating infected animals.

C. Why do I need to wash my hands?

D. It's very important that infected people get treatment right away.

E. Ebola symptoms can start with fever and headache, kind of like the flu.

F. What is an outbreak?

G. Keeping hands clean can help protect you from common illnesses like colds and the flu.

    If you see a group of people dancing and singing on the street or in the railway station, you don't need to feel surprised. They are a flash mob(快闪族). Who are they Are they mobs? Don't be confused by their name. Actually, a flash mob is a group of people who gather suddenly in a public place, do something unusual for a brief period of time, and then quickly disappear.

    They are usually organized with the help of the Internet or other digital communications networks. The messages may be sent to friends, who send to more people. At a predetermined time, they gather and perform some activities such as exchanging books, coming together to look at the sky, waving their hands and yelling something at the top of their voice for 30 seconds. Then, they quickly disappear before the police can arrive Using mobile phones, the flash mob can change its place if the first one has been cancelled for any reason.

    Bill Wasik, senior editor of Hamper's Magazine, organized the first flash mob in Manhattan in May 2003 and the first successful flash mob gathered on June 3, 2003. Wasik claimed that he created the flash mob as a social experiment designed to laugh at fashion seekers and stress the cultural atmosphere of wanting to be an insider or part of "the next big thing”.

    Flash mob gatherings can sometimes shock people. Such an activity might seem amusing and magical, but it also might frighten people who are not aware of what is taking place. Undoubtedly, flash mob can serve as good political tools and have great potential, such as using flash mob to advertise a product.

    The flash mob is now becoming more and more popular. People use it to do many things. Flash mobs give people from all walks of life an opportunity to come together to create a memory.

    The iPhone XS and iPhone XS Max's internals are nearly the same: With each, you get a 12 megapixel camera, better-sounding speakers and the ability to pack two SIM cards into one device for international travelers or people who have to turn between a device for work and one for personal use.

    The phones come with Apple's new A12 bionic chip, which helps make Face ID and games load faster. Apple played up the speed of these new phones during its product announcement, and they are fast. But so were the models before them.

    Both models feature beautiful OLED screens that make watching videos, especially on the XS Max, totally surprising.

    Battery life is also improved on both devices. Apple (AAPL) says you can spare about 30 minutes longer on the XS compared to last year's X, and 90 minutes longer on the Max. It's not a game changer, but we'll take any extra minutes we can get.

    There is one major difference between the iPhone XS and XS Max: size. The Max is unquestionably big, but it's technically the same size as the iPhone 8 Plus. The edge-to-edge screen creates the illusion（幻想）the device itself is 21% larger than its predecessor, but it'll fit in your hands just as easily (or not) as older Plus models.

    But it's hard to shake the feeling that the device is big just to be big. Unlike the Samsung (SSNLF) Galaxy Note or the iPad, the XS Max doesn't support many features tailored for bigger screens, such as another row of apps or a side-by-side display that lets you use two apps at once. It's a missed opportunity.

    The real star of the new models is the camera. A new feature called Smart HDR shoots a four-frame object taken at different exposures and settings and mixes them together to create more detailed shots — similar to an existing feature on the Google Pixel 2.

    But the likely fan favorite feature is a change to the iPhone's Portrait Mode that lets you change the depth of a photo after you take it, allowing you to have more creative control. For example, you can snap a shot of a friend on a beach and change the background for an artsy feel. If you decide later you want to see more of the ocean, you can change the background via the edit button.

    It's an impressive feature, but the results also depend on your photo skills and the lighting. When it's good, it's really good. When it's not, you'll still get a good-looking picture. The Pixel 2 and Samsung Galaxy S9 offer a similar feature, too.

    The XS and XS Max come with headphones, but unlike last year, you won't find an adapter included in the box. This means you'll need to spend $9 more if you want to use an old pair of headphones. It's Apple's way of saying it's finally time to get over the fact there's no longer a headphone jack.

    WIPO is the global forum for intellectual property services, policy, information and cooperation. We are a self﹣funding agency of the United Nations, with 191 member states.

    Our mission is to lead the development of a balanced and effective international intellectual property （IP） system that enables innovation and creativity for the benefit of all.

    Our mandate, governing bodies and procedures are set out in the WIPO convention, which established WIPO in 1967.

    We run workshops and seminars throughout the year. The presentations and meeting documents are made available for downloading wherever possible here.

Current and upcoming

    Case Study Workshop on Support for Intellectual Property Management in SMEs （IP Advantage）

    National Workshop on Intellectual Property Policies for Universities and Research Institutions

    Consultation meetings with the Industrial Property Protections Directorate of the Ministry of Industry, Trade and supply and the main relevant institutions

    National seminar on collective management

    A new algorithm(演算法)raises parking rates in busy neighborhoods and lowers them elsewhere, guaranteeing free parking spots regardless of location, Christopher Intagliata reports.

    If you drive in a city, you've no doubt experienced the headache of circling block after block, cruising for parking. But scientists who study that phenomenon have a solution to free up more spots: “You make them more expensive, so people have to decide whether to park farther away and Pay less, or closer and pay more.”Itzhak Benenson, a system scientist at Tel Aviv University.

    San Francisco has piloted a program that raises parking rates based on demand—and it's been shown to reduce cruising. But the sensors required for those systems can cost millions of dollars to install and operate, Benenson says. So instead, writing in IEEE Intelligent Transportation Systems Magazine, he and his colleague Nir Fulman describe an algorithm that can determine smart pricing, without the use of sensors.

    They tested it on the Israeli city of Bat Yam, near Tel Aviv. First, they divide the city into zones. They estimate the parking demand in each zone, by calculating the number of apartments and offices there. Then they take account of parking supply in the area, along with how wealthy potential parkers might be. Using that data, the algorithm suggested pricing for each zone that would guarantee a 90-percent occupancy rate of parking spots city-wide. Meaning 10 percent of spots were always available to drivers willing to pay the price, regardless of neighborhood.

    Of course, not everyone will agree that raising parking prices will reduce the press of parking. Last time Benenson proposed hiking rates for city residents? “I got about 100 reactions on the web and 99 of them that said they have never heard such a stupid statement from the professors, and I should be punished and fired.”

    Eventually, he says, it'll be up to cities themselves to estimate their residents'political appetites for an easier parking spot.

    Brazil, the largest country in South America, is famous for the Amazon rainforest and soccer. But on the hottest days, people travel there for another reason – the Carnival. Full of excitement and fun, the Carnival is held annually in February or March. This year, the celebration runs from March 2^nd to 9^th.

    It is a wild festival of food, music and dance. The word "Carnival" comes from the Portuguese "Carne Vale", which means "farewell to meat". In the early 1600s, the Portuguese brought European traditions to Brazil. Then they started their own carnival with dances and music, which were inspired by black people brought there by the slave trade.

    With its beautiful floats (花车), attractive clothes and happy people, the Samba Parade is the most fantastic event of the Carnival. The Sambadrome is a special stadium for the Carnival in Rio de Janeiro with 80,000 seats where people can sit and enjoy the festival. Samba is said to be the soul of Rio. "This is where the passion for samba lies – the atmosphere is electric as even the oldest men and women sing and dance to the music," travel guidebook Lonely Planet noted.

    Top samba schools stand out in the main parade, with fantastic parades of floats and thousands of dancers. The parade goes on until dawn. The schools base their performances on certain themes from Brazilian history or on social and environmental problems, such as that of the Amazon rainforest.

    Besides fun street parties, colorful costumes and energetic music, Carnival also offers plenty of tasty street food, such as Quindim – a dessert made of egg yolks and sugar.

Overall, it is traditionally a time to go a bit crazy with eating, dancing and dressing up.