In the time of Queen Victoria, cholera, a deadly disease, hit London, which often resulted in large numbers of {#blank#}1{#/blank#}(dead). John Snow, a then well-known doctor, became{#blank#}2{#/blank#}(inspire) when he thought about helping ordinary people who {#blank#}3{#/blank#}(expose) to cholera. John Snow thought {#blank#}4{#/blank#}most important was to find its cause. He got interested in two theories {#blank#}5{#/blank#}(explain) how cholera killed people. He believed in the second theory{#blank#}6{#/blank#}suggested people absorbed the disease with their meals. He began to gather information and made a map, on which he marked {#blank#}7{#/blank#}the victims(受害者)had lived. As a result, he found out that the {#blank#}8{#/blank#}(pollute)water was the cause of cholera and suggested that the source of all water supplies{#blank#}9{#/blank#}(examine)immediately. Finally, “King Cholera”{#blank#}10{#/blank#} (defeat).

    It's amazing that Chinese police are using facial-recognition tech to catch criminals. Police in Beijing are reportedly testing out new smart glasses with facial-recognition technology. The smart tech, which {#blank#}1{#/blank#} (use) in many checkpoints to find suspects presently.

    Some people will certainly be worried about the possibility of police using facial-recognition tech to flag individuals, {#blank#}2{#/blank#} the chief executive thinks that there is no reason {#blank#}3{#/blank#} the concern, because he trusts the government. {#blank#}4{#/blank#} (Interesting), this is not the first time that facial recognition has been used to stop wrongdoers in Beijing. In 2017, we reported on how visitors were having their faces scanned automatically in a certain restroom in {#blank#}5{#/blank#} capita] city to prevent locals from {#blank#}6{#/blank#} (steal) the paper for use at home.

    Authorities in Shenzhen, China, have also set up artificial intelligence-powered CCTV cameras to scan the faces of those {#blank#}7{#/blank#} cross the streets unlawfully and display their {#blank#}8{#/blank#} (identity) on large LED screens for all people to see.

    If that isn't punishment enough, plans are now in place {#blank#}9{#/blank#} (link) the current system with cellular technology, so offenders will also be sent a text message with a fine as soon as they are caught {#blank#}10{#/blank#} (cross) the road against traffic lights.

    Nowadays, in my spare time, I prefer to go outdoors and spend my time in some different places and with some different people.

    The first reason {#blank#}1{#/blank#} I do outdoor activities is that I have spent too much time indoors. Most of the time I just sit in the classroom, listening {#blank#}2{#/blank#} the teachers and doing my homework. The indoor activities are too {#blank#}3{#/blank#}(limit). The second reason is that fresh air, sunlight and enough physical exercise {#blank#}4{#/blank#}(need) for a healthy body. So when I am free, I should go out. And the {#blank#}5{#/blank#}(three) one is that I want to have more {#blank#}6{#/blank#}(experience) in my life. When you go out, far away from your daily life, you will meet a lot of people who are quite different from you. It will give you a lot of {#blank#}7{#/blank#}(beauty) moments.

    {#blank#}8{#/blank#}(do) outdoor activities, however, will take a lot of money and energy. So if you have not prepared enough, having some amusement indoors is also {#blank#}9{#/blank#} good choice. It may be much cheaper and easier {#blank#}10{#/blank#}(carry) out. Reading some books and enjoying music are also very good.

    I was visiting Australia a few weeks ago. I knew I couldn't leave the surf capital of the world {#blank#}1{#/blank#} having a try myself. I booked a group surf lesson when I was in Byron Bay, which is a really popular place for {#blank#}2{#/blank#} (skill) surfers to go and catch some waves!

    We started off with a warm-up by doing some stretches and going for a jog along {#blank#}3{#/blank#} beach. Then we all {#blank#}4{#/blank#} (lie) down on our surfboards on the sand and practiced {#blank#}5{#/blank#} (jump) up to the standing position. After this, we were ready to go out and try it out on the water. Well, surfing is much {#blank#}6{#/blank#} (hard) than it looks—when you watch people from the beach they make {#blank#}7{#/blank#} look so easy! I had tried a couple of times but failed before one of the {#blank#}8{#/blank#} (coach) came to help me and held my board steady.

    Finally I started to get the hang of it and by the end of the lesson I managed {#blank#}9{#/blank#} (stand) up on the board by myself, {#blank#}10{#/blank#} was a pretty awesome feeling. Now I can't wait to try it again, although I'll definitely need to wear a wetsuit if I'm surfing in the UK!

    Do you have sleeping problems? If so, then these tips may help you fall asleep fast.

    Set aside the thought that you have to fall asleep. The more you think of it, the {#blank#}1{#/blank#} (hard) you will fall asleep.

    The foods you eat also play {#blank#}2{#/blank#} important part. Avoid eating or drinking things like chocolates, coffee, tea and energy drinks. If you have to, then have them in the morning and never in the afternoon, {#blank#}3{#/blank#} (especial) before going to bed. Don't eat too much at night. A full stomach will make it more difficult for you {#blank#}4{#/blank#} (fall) asleep because your body is working more time to digest the food you ate.

    Make a fixed time to go to bed. For example, by 9 o'clock in the evening you should already be {#blank#}5{#/blank#} bed. Do this even if you're not sleepy yet. Once {#blank#}6{#/blank#} (follow) this routine, you will gradually see that you will feel sleepy when it's 9 o'clock in the evening.

    Make your room {#blank#}7{#/blank#} (comfort) for sleeping. You should also take notes that the sleeping environment also {#blank#}8{#/blank#} (affect) your sleep. It must be in the room {#blank#}9{#/blank#} it's not noisy. Otherwise, you will find {#blank#}10{#/blank#} difficult to fall asleep again after waking up.

    When someone has deeply hurt you, it can be very difficult to let go of your anger. But forgiveness is possible ­ and it can be surprisingly {#blank#}1{#/blank#} (benefit) to your physical and mental health. So far, research {#blank#}2{#/blank#}(show) that people who forgive can have more energy, better appetite and better sleep. "People who forgive show {#blank#}3{#/blank#}(little) anger and more hopefulness," says Dr. Fre deric Luskin, who wrote the book Forgive for Good. So it can help reduce the tiredness out of the immune system and allow people {#blank#}4{#/blank#}(feel) more energetic."

    So when someone has hurt you, cool down first. Take a couple of breaths and think of something {#blank#}5{#/blank#}gives you pleasure: a beautiful scene in nature, or someone you love. Don't wait for an {#blank#}6{#/blank#} (apologize). "Many times the person who hurt you may never think of apologizing," says Dr. Luskin. "They may have wanted to hurt you or they just don't see things in {#blank#}7{#/blank#}same way. So if you wait for people to say sorry, you could be waiting a very long time."

    Next keep in mind that forgiveness does not necessarily mean {#blank#}8{#/blank#}(accept) the action of the person who upsets you. Instead, learn to look for the love, beauty and kindness around you. Finally, try to see things from the other person's perspective. You may realize that he {#blank#}9{#/blank#}she was acting out of ignorance. To gain perspective, you may want to write a letter to {#blank#}10{#/blank#}(you) from that person's point of view.