CHICAGO- Have you ever worked on your laptop computer with it sitting on your lap, heating up your legs? If so, you might want to rethink that habit from now on. Doing it a lot can lead to “toasted skin syndrome (症状)”, an unusual-looking spotted skin condition caused by long-term heat exposure (暴露), according to medical reports.

       In one recent case, a 12-year-old boy from California developed a skin discoloration on his left lap after playing computer games a few hours every day for several months. “He recognized that the laptop got hot on the left side; however, he did not change its position,” Swiss researches reported in an article published Monday in the journal Pediatrics.

      Another similar case is a Virginia law student who needed treatment for the spotted darkening on her leg. Dr. Kimberley Salkey, who treated the young woman, learned the student spent about six hours a day working with her computer placed on her lap. As Dr. Salkey later learnt, the temperature under the laptop could reach 51 degrees. That case, from 2007, is one of 10 laptop-related cases reported in medical journals in the past six years.

The condition can also be caused by overuse of heating pads (垫子) and other heat sources that usually aren't hot enough to cause burns. It's generally harmless but can also cause such permanent (永久的) skin darkening. In very rare cases, it can cause damage leading to skin cancers, said the Swiss researchers, Drs. Andreas Arnold and Peter Itin from University Hospital Basel. They do not mention any skin cancer cases linked to laptop use, but suggest, to be safe, placing a carrying case under the laptop if you have to hold it on your lap.

      Dr. Kimberley Salkey said that under the microscope, the affected skin is similar to skin damaged by long-term sun exposure.

      Major producers including Apple and Dell warn against placing laptops on laps or exposed skin for long periods of time because of the risks for burns. In the past, “toasted skin syndrome” has happened to workers whose jobs require being close to a heat source, including bakers and glass blowers, and in people who gathered near hot stoves to stay warm.

Dr. Anthony J. Mancini, chief at Children's Memorial Hospital in Chicago, said that it's unlikely that computer use would lead to cancer since it's so easy to avoid close skin contact (接触) with laptops.

    Almost every Chinese can recite the famous poem, "Every grain on the plate comes from hard work(谁知盘中餐, 粒粒皆辛苦)."But sadly, many of us don't actually get the real meaning of these lines：Don't waste food.

    A CCTV programme, News One Plus One, reported that the food Chinese people throw away every year is enough to feed 200 million people for a year.

    Do we have too much food? No, according to the UN World Food Programme, there were 925 million hungry people around the world in 2010, especially in developing countries.6 million children die of hunger every year.

    Chinese people are well-known for being generous. Many even feel that they will lose face if their guests have eaten all the food on the table.

    Luckily, a number of people have realized the importance of saving food. In November, 2011, Li Hong, a waitress in a restaurant in Nanjing, became famous because she took some leftover(剩余的)food home for her son. Many people stood by her side and agreed that it was not right to waste food.

    What should we do in our daily lives to save food? Here are some tips：

    Do not order too much in a restaurant. Only order what you want to eat. If you cannot eat all the food you ordered, take the rest of it home.

    Don't be too picky(挑剔的)about food. Some food may not taste great, but your body needs it.

    Keep an eye on what food you have at home. Don't buy too much, especially vegetables and fruit.

    Would you like to go to the zoo at night? Last month, Shanghai Wild Animal Park opened its night safari(夜间观赏)for the first time. You can see animals in the dark. Some animals enjoy the night—they are nocturnal(夜行的)animals. Who are they?

Here is some information about me and my friends.

{#blank#}1{#/blank#} Smith is my last name. I'm a student. I like blue. My telephone number is 443-6678. Do you want to be my friend? 

{#blank#}2{#/blank#} Her English classes（课）are good and we all like her. She is our friend. Look! Her cup and jacket are red. Her telephone number is 1356669001 

{#blank#}3{#/blank#} Zhang is his family name. His English name is Jack. He likes black. What's his telephone number? It's 889-3445. 

{#blank#}4{#/blank#} He is in my class. Miller is his family name. What color does he like? White. His telephone number is 667-890. 

{#blank#}5{#/blank#} She is from Hangzhou. Her last name is Li. She has no English name. Her QQ number is 1253389556. She likes yellow best. 

Open a food delivery(递送) app, place your order, and wait for your food to be delivered to your home— this is how people wait in China these days. According to the latest report, there are about 842 million (百万) Internet users in China and half of them use online food delivery services. 

{#blank#}1{#/blank#}A recent report showed that 86.3 percent of the services' users are young people, between 20 and 34 years old.

Most of these people come from small families that are usually busy with work. {#blank#}2{#/blank#}After all, ordering food online has made life easier and waiting for food at home is much more comfortable. Besides breakfast, lunch and dinner, extra meals such as afternoon tea and midnight snacks can also be ordered online. {#blank#}3{#/blank#}

To win more users, the food delivery companies(公司) are now trying to improve (提高) their services. {#blank#}4{#/blank#}But in 2021, it just took 20 minutes. And what's more, delivery companies can deliver food and many daily things,such as medicine and flowers. {#blank#}5{#/blank#}Meituan Waimai was the No. 1 among all food delivery companies. There were about 3 million delivery staff at Meituan at the end of June, 2022. More than 600 million users order food by using Meituan Waimai.