Get a Better Night's Sleep

    You're trying to get a good night's sleep, but why do you still find yourself staring at the ceiling? It's time to listen to what some unexpected experts have to say.

Get the Basic Equipment Right.

    There's really good study on the basic equipment for sleep. {#blank#}1{#/blank#}Firstly, most people prefer a mattress （床垫）that is not too hard and not too soft. Secondly, if your mattress is eight to ten years old, you should get a new one. Seventy-two percent of people said they slept better on their new mattress than they did on their old one.

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    Watching TV at night may seem relaxing. However, it beams light into your eyes, which is a “warning” signal for the brain.{#blank#}3{#/blank#}Besides, the cooler white and blue light from a computer screen encourages brain activity and makes your brain difficult to calm down. Download the software at stereopsis.com /flux. It gradually makes your screen less bright at sunset, turning its colors a warmer red one.

Keep you Cool.

    One of the best signals from the body to go to sleep is a decrease in body temperature. I suggest sleeping in a very cool environment, about 19℃. A hot bath will increase your skin temperature, which finally decreases your main body temperature. {#blank#}4{#/blank#}

Make Sleeping Pets Lie.

    Sometimes your dogs might need the noise of machines. Many dogs are sensitive to noises outside, like other dogs barking or neighbors coming home late. A noisy machine will drown out the noises that are keeping your pet up, which keep your pet from waking you. {#blank#}5{#/blank#} If you keep them awake during the day, they're more likely to sleep at night.

 A. Read a book before bed instead.

 B. Take a bath a half-hour or so before bedtime.

 C. You also learn dogs sleep when they're bored.

 D. The dog is very loyal to his master.

 E. It proved two theories.

 F. You don't need a really beautiful mattress.

 G. Switch off the Box.

    What is the difference between developed and developing countries? The question is quite a difficult one. But we can compare them in two important aspects: people and economy.

    In developing countries there are high rates of both birth and death. Families decide to give birth to more than one child, because many developing countries do not have the systems necessary to guarantee(保证) the life of old people. Raising more children seems to be the only way to make sure that during their later years a person will be taken care of.

    The situation is completely different in fully-developed countries. Those countries have low levels of birth and mortality. Low mortality rate is mainly because of the good health care, but low birth rate is due to the fact that supporting a family with more children is expensive nowadays. Another reason is that more and more women decide to work outside, so there is usually no time and place for a large group of children in their lives.

    In developed countries, most industries have high levels of technological progress, while in developing countries most GDP comes from agriculture. It is mainly due to the fact that services and many branches of industry are in the stage of development. But they have the potential to develop quickly, because they have many things to improve.

    Of course, the difference between developed and developing countries is not that clear, because some countries might be in the middle of great changes. When a country is in that stage, some data can define the country as a developing one, but others may show that it is a developed one.

A

Fire Prevention Information

    The University of Adelaide employs a full-time staff of fire prevention professionals. They inspect all campus buildings and test and maintain all sprinkler(喷水灭火装置）systems, fire alarms, and fire extinguishers (灭火器). They also provide educational programs or fire safety in the residence hall. Whenever you move to a new area, you should locate the fire alarm pull stations and the two exits nearest your room.

Fire Alarms

    The floors of all campus buildings are equipped with manual(手动的）fire alarm systems which include fire alarm pull stations and pipes. Most are also equipped with automatic fire alarm systems consisting of heat detectors, smoke detectors and sprinklers. For your safety, never tamper with(胡乱摆弄）these systems. False fire alarms are illegal and may lead to imprisonment.

Fire Drills

    A fire drill will be conducted in your residence hall every semester. During a fire drill, please do the following:

    •Take your room key and ID, close and lock the door to your room.

    •Exit immediately from the nearest emergency exit do not use a lift.

    •Meet outside of your residence hall and wait for further instructions.

Fire Extinguishers

    Fire extinguishers are located on each floor and in each apartment. Use a fire extinguisher only if you have been trained to do so. Irresponsible use of a fire extinguisher can create a dangerous situation for other residents and could result in damage to personal property. Misuse of a fire extinguisher will result in fines.

Smoke Detector

    A smoke detector is on the ceiling in your room. Some buildings also have heat detectors on the ceilings. Do the following to ensure the safe operation of your smoke detector:

    •If your smoke detector is working properly, the red light should be on. If the red light is not blinking（闪动），contact residence hall staff immediately.

    •Do not cover or block your smoke detector in any way.

    •If a smoke detector sets off an alarm and there is no fire or smoke, inform your hall staff.

    In every British town, large and small, you will find shops that sell second-hand goods. Sometimes such shops deal mostly in furniture, sometimes in books, sometimes in ornaments（装饰） and household goods, sometimes even in clothes.

    The furniture may often be “antique”, and it may well have changed hands many times. It may also be very valuable, although the most valuable piece will usually go to the London salerooms, where one piece might well be sold for hundreds of thousands of pounds. As you look around these shops and see the polished wood of chests and tables, you cannot help thinking of those long-dead hands which polished that wood, of those now-closed eyes which once looked at these pieces with love.

    The books, too, may be antique and very precious; some may be rare first printings. Often when someone dies or has to move house, his books may all be sold, so that sometimes you may find whole libraries in one shop. One the border between England and Wales, there is a town which has become a huge bookshop as well. Even the cinema and castle have been taken over, and now books have replaced sheep as the town's main trade.

    There are also much more humble shops, sometimes simply called “junk shops”, where you can buy small household pieces very cheaply. Sometimes the profits（利润）from these shops go to charity（慈善事业）. Even these pieces, though, can make you feel sad; you think of those people who once treasured them, but who have moved on to another country or to death.

    Although the British do not worship（崇拜）their ancestors, they do treasure the past and the things of the past. This is true of houses as well. These days no one knocks them down; they are rebuilt until they are often better than new. In Britain, people do not buy something just because it is new. Old things are treasured for their proven worth; new things have to prove themselves before they are accepted.

    We've heard of robots and AI（Artificial Intelligence）taking human jobs, but I bet mayors（市长）don't really think their jobs can be threatened any time soon. They were wrong, and the AI running for the mayor of a Tokyo district was clear proof of that.

    AI can't legally nm for high-ranking public management positions yet, but one mayoral candidate from Tama City, Tokyo, intended to maximize the use of artificial intelligence in running city affairs. He was running his campaign （竞选运动） as "AI Mayor". Basically, he was suggesting replacing human public officials with AI and having them collect city data and create fair and balanced policies that will benefit everyone.

    "For the first time in the world, AI will run in an election," human candidate Michihito Matsuda announced on Twitter. "Artificial Intelligence will change Toma City. With the birth of an AI Mayor, we will conduct balanced politics."

    The AI Mayor was campaigning very much like its human competitors. Posters were shown all over Tama City and campaign trucks were blaring out（大声鸣响）promises of an AI utopia （乌托邦）and asking for support.

    Some people called Michihito Matsuda's campaign a stunt （噱头）, as a human would still be the one legally in charge. However, others said that they were excited about the future of AI running things in the background, adding that it had to be a better choice.

    With more and more people swimming at beaches every year, the problem of sharks (鲨鱼) takes on new importance. There are people who still insist that sharks never attack human beings unless they are bleeding or wounded, but this belief has not been clearly proved. In the past few years, on both the Atlantic and Pacific coasts, there have been cases of shark attacks which resulted in death. And just how many of the swimmers who have disappeared were victims of shark attacks will never be known. Clearly, these violent fish can be dangerous. Several species are known to attack human beings, and it is believed by some experts that certain sharks, once having tasted human blood, develop a taste for it.

    The chances that one will come across a shark are small, but certain precautions should be taken by everyone. (A precaution is something you do in order to prevent something dangerous or unpleasant from happening.) Putting hands or legs over the side of a boat in warm waters is to be avoided. Swimming far out from beaches is inviting trouble. No swimmer should go great distances from shore alone, or go into the water when nobody else is about. Skin divers, particularly those who go deep down in the water or among rocks and ledges (暗礁) that serve as hiding places for sharks, are taking unnecessary risks.

    If one is in a boat that is rubbed against by a shark, he should remember the creature is not trying to upset his boat; it is probably trying to rub off sea lice (海虱). A blow, especially on the nose, will drive it off. If a swimmer comes across a shark, he should swim away as quietly as possible, trying to avoid making it angry. He should also head for shore (岸) as quickly as possible.