—I have been studying here ________.

    A blocked airway(呼吸道) can kill someone in three to four minutes, but it can take more than eight minutes for an ambulance to arrive. So a simple procedure such as opening someone's airway can save their life while they're waiting for emergency medical help. This means you're more likely to give first aid to someone you know than a stranger.

    There are many misconceptions (误解) surrounding first aid. Below are the ‘most popular' ones with details of what you should do.

    You should put butter or cream on a burn. The only thing you should put on a burn is cold water — keep the butter for cooking. Put the affected area under cold running water for at least ten minutes.

    The best way to treat bleeding is to put the wound under a tap. If you put a bleeding wound under a tap you wash away the body's clotting agents(凝血剂) and make it bleed more. Instead put pressure on the wound with whatever is available to stop or slow down the flow of blood. As soon as possible call 999. Keep pressure on the wound until help arrives.

    Nosebleeds are best treated by putting the head back. If you put the head back during a nosebleed, all the blood goes down the back of the airway. Instead advise them to tilt(倾斜) their head forwards and ask the person to pinch(捏) the end of their nose and breathe through their mouth.

    You need lots of training to do first aid. You don't — what you mostly need is common sense. You can learn enough first aid in a few minutes to save someone's life — whether it's from a book, attending a course or watching videos online.

    Remember: anyone can save a life

    Can animals be artistic? Painting and music are part of efforts to keep animals happy at the Smithsonian's National Zoo.

    A sloth bear (长毛熊) called Francois is one of the National Zoo's artists. He began his artistic career two years ago. Francois has a very unusual way to paint. He uses his breathing to paint. His zookeeper, Stacey Tabellario, says that although the technique may look strange, it is actually a very natural behavior for sloth bears. The zookeepers fill one of those tubes full of paint and ask them to breathe through it. And they blow all of the paints onto the canvases (画布), making these really cool paintings.

    Animal artists come in all shapes and sizes at the Zoo. They use many kinds of techniques to create their works of art. Apes use paintbrushes. Many use their paws or claws—much like a human painter who would use his or her hands.

    Stacey Tabellario says Francois seems to enjoy expressing himself through his art. “When I set up the materials for painting activity, he comes and sits next to them and waits until they are ready for painting. He does that every time. I also see where his eyes go. He does see the paints come out of the tube and land on the canvas.”

    But not every animal wants to paint. Music is another part of the arts enrichment program. Physically and mentally stimulating activities are an important part of the daily care of the animals. Trainers have a lot of tools, from tablet computer to small toys.

    Kenton Kerns says the program helps the animals and the zookeepers in many ways. Every interaction between keepers and their animals creates some sort of connections. The one-of-a-kind works of art created by the animals are popular with zoo visitors. Many are sold at the zoo's fund-raising events.