In England, people often talk about the weather because they can experience (经历) four seasons in one day. In the morning the weather is warm just like in spring. An hour later black clouds come and then it rains hard. The weather gets a little cold. In the late afternoon the sky will be sunny, the sun will begin to shine, and it will be summer at this time of a day.

    In England, people can also have summer in winter, or have winter in summer. So in winter they can swim sometimes, and in summer sometimes they should take warm clothes.

    When you go to England, you will see that some English people usually take an umbrella (伞)or a raincoat with them in the sunny morning, but you should not laugh at them.

    If you don't take an umbrella or a raincoat, you will regret (后悔) later in the day.

    Sunstroke (中暑) is a condition that can quickly go from dangerous to deadly, especially if proper care isn't given immediately.

    Sunstroke, sometimes called heatstroke, is a result of the body temperature rising above safe limits. This causes the body's necessary functions to stop working.

    It's usually pretty easy to avoid sunstroke, as long as proper action is taken. In that case, you need to act as quickly as possible to return that person's body to a safe temperature. Here are a few tips to help treat sunstroke.

Call for help

    Call to get an ambulance as quickly as possible. This should be the first thing you do, especially if the sunstroke person has fainted(昏倒). Also, call for help from anyone nearby if you're in a public place. If there's no one around, call someone nearby if they can get there sooner than an ambulance. Ask everyone to bring you as much water as possible, if there isn't much nearby.

Get the person to a cooler area

    If there's a building nearby, aim for that. Anywhere with plenty of air conditionings and water is perfect. If a building isn't available, bring the person to a well shaded area.

Get the water flowing

    If the person is still conscious, get him or her to drink water. If there's a bathtub available，fill it with cool water and put the person in it.

If your water supply is limited, you have to save it. Dampen a towel or shirt and put it on the person's body. Focus on the face, neck，and chest.

Fan the person

    Getting moving air over the person cools him or her down. Use anything, a towel or sheet, a shirt your hands，or a piece of board. This is where having many people around really helps, as they can combine to fan the entire body.

    Home from the Navy, I started school at Greenville College in my hometown of Illinois. I'd been out of high school for four years, but my high school headmaster, Mr. Gardner, invited me to a Valentine's Day dance party at school. The thought of seeing my former teachers was exciting. So I agreed.

    When Friday came, I cleaned up, dressed up and drove to the high school gym. I chatted with my teachers and approached Mr. Gardner to thank him before leaving. Just then, the band started playing and a young girl stood up to sing. One look at and I was crazy—I had never seen such a beautiful girl!

    I asked Mr. Gardner who she was, and he answered, “That's Marilyn Riley, Cut Riley's daughter.” I was shocked to say the least. They lived just around the corner from me. I walked across the gym floor to introduce myself, “Hi, I'm Jack Joseph.”

    “I know who you are,” was her not-too-friendly response.

    “Would you like to dance?” I asked. “No! I'm working,” she shot back.

    “Can I call you next week for a movie date?” I asked. “No,” was her response.

    For the next month I phoned, trying to set up a date. She always had the same answer: No. then one rainy afternoon in March as I was driving home after basketball practice, I saw Marilyn, walking with no umbrella, no raincoat, no hat. I pulled alongside her and asked if she needed a ride, half expecting her to say no. instead, she stepped over the roadside and sat down on the seat next to me. It was only a few blocks to her house, but after pulling into her driveway we talked for 45minutes. It was magic from then on.

    Tom arrived at the bus station quite early for the London bus. The bus for London would not leave until five to twelve. He saw a lot of people waiting in the station. Some were standing in lines, others were walking about. There was a group of school-girls. Their teacher was trying to keep them in order. Tom looked around but there was nowhere for him to sit.

    He walked into the station cafe. He looked up at the clock there. It was only twenty to twelve. He found a seat and sat down, facing a large mirror(镜子) on the wall. Just then, John, one of Tom's friends, came in and sat with Tom.

    "What time is your bus?" asked John.

    "Oh, there is plenty of time yet," answered Tom.

    "Oh, I'll get you some more tea then," said John.

    They talked while drinking. Then Tom looked at the clock again.

    "Good heavens! It's going backward!" he cried. "A few minutes ago it was twenty to twelve and now it's half past eleven."

    "You are looking at the clock in the mirror," said John.

    Tom wanted to kick himself for being so foolish. The next bus was not to leave for another hour. He has never liked mirror since then.

    Huawei Technologies Co. displayed its much-anticipated in-house operating system Harmony OS on Friday, marking what some call the Chinese tech giant's biggest push yet to build its own software ecosystem for the era of the internet of things.

    The move is also expected to weaken the influence of the United States government's restrictions on Huawei using Google's Android operating system in smartphones, analysts said.

    Yu Chengdong, CEO of Huawei's consumer business group, speaking in Dongguan, Guangdong province, said it is difficult to deliver a smooth experience across different devices with the huge amount of codes involved in the Android and Linux operating systems. Linux is an open-source operating system widely used in personal computers and other hardware.

    "Harmony is a next-generation operating system designed to address the challenge," Yu said, adding that it will be able to support a wide range of application situations, including smart TVs, automobiles and wearables.

    The internet of things refers to a network of devices and other objects that can connect with each other and exchange data.

    Yu said the US government's restrictions have accelerated the company's marketing of the system, which now has about 4,000 employees working on it.

    The senior executive said Harmony can be used in its smartphones. But Android is still Huawei's preferred choice for handsets if the company is allowed to use it.

    "But when Android is not available, Harmony can be applied immediately to smartphones. Harmony is ready," Yu added.

    Jia Mo, an analyst at market research company Canalys, said even if Huawei does not use Harmony in its smartphones in the short term, its smartwatches and smart TVs can be equipped with Harmony to widen its use and accumulate more experience in building an ecosystem.

    "Also, more importantly, Huawei chose to build Harmony into an open-source operating system and allow it to be compatible with Android. Thus Harmony will be more accepted by current Android users. This will prevent Huawei from repeating the fate of Microsoft in promoting smartphone systems," Jia said. Microsoft failed to popularize the use of its Windows system in smartphones years ago.

Las Vegas can offer a lot more than you expect. Here are the best guided tours to help visitors make the most of their Sin City getaway.

Big Bus Las Vegas—Open Top Night Tour

Admire the glittering lights downtown on this evening double-decker bus tour. Along the drive, you'll pass well-known buildings before hopping off to enjoy the free light shows on Fremont Street. Tour-takers praise the guides for their informative, friendly account.

Passengers can board the buses at the LINQ Promenade starting at 7 p.m. each evening.

Cowboy Trail Rides—Red Rock Canyon Sunset Horseback Ride

When you need a break from the city life, put on a cowboy hat and boots for a sunset trail ride through Red Rock Canyon. On the ride, you'll follow a guide through the picturesque desert landscape, watching for wildlife. Travelers warn that it can get chilly on the ride, so they advise wearing warm layers.

Trail Rides are offered Tuesday through Sunday.

Papillon Grand Canyon Helicopters—Grand Celebration Tour

Papillon Grand Canyon Helicopters' Grand Celebration tour offers bird's-eye views of sought-after sights, like Eagle Point and Lake Mead. The tour also includes a Champagne picnic. The pilots and staff earn praise for their friendliness and professionalism.

There are several daily departure options.

Secret Food Tours—Las Vegas Strip

Every day Secret Food Tours take groups of 10 participants to five-star restaurants on the Strip to sample a variety of cooking delights, including pizza, chocolates and lobster. During the walking tour, highly praised guides teach tourgoers about the city's food and culture. Travelers say the food on the tour is plentiful and tasty, but they warn that you'll be doing a lot of walking.

Tickets include all food tastings.