Luke has always been my closest and constant companion these past five years. In fact, he is very friendly to me especially when I take care of other furry friends in our shelter.

    There have been a lot of forest fires during the summer season. Not far from our shelter, a forest caught fire during this hot summer. Luke rushed towards the forest where flames send out a terrible heat. There's no longer any hope at the moment to wait for Luke to come back to the shelter. In fact, I was waiting for the firemen to announce me his death in the forest. Suddenly, a fireman burst into my office and informed me that my dog Luke succeeded in saving four cats which were trapped by the flames. Luke seized the kittens, one by one moving them to a safe place. I immediately accompanied the fireman to the forest to pick up the rescued kittens, but Luke was not there. Then we heard the sound of a dog came from the forest barking furiously. The firemen followed the tracks of the dog until they found him barking loudly by the side of an injured fireman who was lying on the ground.

    That day, I was very proud of Luke for his two heroic actions. I paid a visit to the fireman accompanied with my adorable Luke. What a memorable scene when the fireman hugged Luke tightly to his chest!”One thousand thanks, Luke, for saving my life,” the fireman said.

    This true story of love and compassion shows us that pets are loving, caring and compassionate. We should love and protect them. Don't belittle them. Little animals can make enormous things for humans.

    China became the first country to clone a monkey using non-reproductive cells, scientists said on Thursday. By December 2017 , the Chinese Academy of Sciences had created two clone macaques(猕猴) named“Zhong Zhong” and “Hua Hua”by nuclear transferring of body cells—any cell in the organism other than reproductive cells. This was the similar technology used to create the famous clone sheep Dolly in 1996.

    Telra, a monkey born in 1999 , is the world's first ever-cloned monkey, but it was done using a simpler method called embryo splitting(胚胎分裂)，and cannot be genetically modified to suit experimental needs, said Pu Muming, a leading researcher at the Chinese Academy of Sciences. Cloning a monkey using body cells has been a world-class challenge because it is a primate(灵长类)that shares its genetic makeup, therefore all of its complexity, with humans, he said.

    For drug and other lab tests, scientists have to purchase monkeys from all over the world, which is costly, bad for the environment and produces inaccurate results because each monkey might have different genes, Pu said.

    By cloning monkey using body cells, we can mass reproduce a large number of genetically identical monkeys in a short amount of time, and we can even change their genes to suit our needs, he added. “This can save time, cut down experiment costs, and produce more accurate results, leading to more effective medicine.”

    Sun Qiang, director of the non-human primate research facility at the institute, said most of the drug trials are currently done on lab mice. However, drugs that work on mice might not work or even have severe side effects on humans because the two species are so different.

    Monkeys and humans are both primates, so they are much closely related and testing on monkeys is supposed to be as effective as testing on humans. This achievement will help China lead the world research in an international science project related to study of primate brains.

    As my fortieth birthday approaches, inevitable as a new hair-do, I realize how many women friends I've had over the years: Most have come and gone with the changes of life, just like the latest shoe fashions waltz in and out of my closet.

    Some of my friends, like some of my shoes, were silly mistakes. They never did fit properly, and they always felt slightly “off”, no matter how hard I tried to fit my feet into them. Others were my absolute favorite for a while, but they wore out or wore off. All style and no substance; the quality just wasn't there.

    Then there are my true friends—the ones who, like a pair of fine shoes, never go out of style or out of favor, whose appeal and value just increase with wear and time. These are friends who stay in touch and stand by me—as if they and I have never gone off to a new state, or a new job. Physical distance does not separate us; time does not change the fundamental fact of our friendship; the wear and tear of life does not stop us. The sole still support us; the colors and lines still please us; the uppers, still strong but gown son, gently bent around feet. Our connection is securely fastened, unaffected by the whirlwind of changes we've each been through, even when life carries us in different directions.

    If the comparison fits...

    Deborah is the evening shoe, elegant and lovely. She appreciates the finer things, choose only the best, and still looks polished long after the rest of us have drooped. She is a study in elegance and knows the difference between bone, and winter white. From this splendid treasure, I've come recognize my own appreciation for the finer things in life—and to the realization that I deserved them.

    Jane is pair essential, timeless pumps that I wear often and would be lost without. With this classic, my basic needs and comfort level are assured—leaving me time and energy for fun. I can move gracefully from day to night, from work to play, from jokes to discussion. My step is light; laughter comes easily and I am ready for adventure.

    Georgiana is my pair of standard white Keds—familiar, comfortable and good for all seasons. I've had them since long before. They are part of my childhood. They take me home, and I am a kid again diving into the ocean on a hot summer day. They have been up the hill and through the mud with me. They keep me moving forward, even when putting one foot in front of the other feels like the hardest thing I've ever done. I know I can slip them tomorrow and after. I am indebted to these lovely worn sneakers.

    In the shoe rack of life, these are the friends I cherish. They are the base upon which I stand. They accompany me on my chosen path, regardless of where it leads or how bumpy or how humpy or winding it gets.

    Durian(榴莲) is probably the smelliest fruit in the world, letting out an unusual unpleasant smell which would make anyone bring up. However, nobody was aware of what gave this fruit its unique smell, so a team of researchers from Singapore decided to take a look at its genome (基因组) and find out,

    Durian is well-known throughout Southeast Asia as the king of fruits, mostly because of its awful appearance and smell. However, the origin of this unpleasant smell was unknown, so researchers decided to map the genome of the fruit, and find the gene that controlled it. A group of genes, volatile sulfur compounds (含硫化合物), became very active in the fruit, and they were found responsible for resulting in the unpleasant smell.

    The fruit confuses everyone with a sulfuric smell, like rotten onions and ingredients. The smell lasts long, mostly because the fruit contains more volatile sulfur compounds. Other species usually benefit from two gene copies at most, but durian has four, leading to the striking smell.

    However, this smell might be an advantage for durian in the wild. Although we find it unpleasant, many animals might be attracted by it. If they eat the fruit, then they can easily spread its seeds everywhere, thus contributing to the distribution of the species.

    The mapping of the durian genome also showed some other information on the species. First of all, the fruit has an impressive number of genes, namely 46,000. Also, with the help of these genes, they saw how it evolved, and discovered it was related to the cacao tree. All the other discoveries have been published in the journal Nature Genetics.

    Despite the striking smell, many people actually enjoy eating the fruit. However, not all durian species are edible, and some of them may even cause damage to our health, Even so, the fruit is often imported, significantly contributing to the economy.

    The following is a timetable in Guangzhou Baiyun International Airport.

    Attitudes toward new technologies often fall along generational lines. That is, generally, younger people tend to outnumber older people on the front end of a technological change. It is not always the case, though. When you look at attitudes toward driverless cars, there doesn't seem to be a clear generational divide. The public overall is split on whether they'd like to use a driverless car. In a study last year, of all people surveyed, 48 percent said they wanted to ride in one, while 50 percent did not.

    The fact that attitudes toward self-driving cars appear to be so steady across generations suggests how transformative the change to driverless cars could be. Not everyone wants a driverless car now-and no one can get one yet—but among those who are open to them, every age group is similarly involved.

    Actually, this isn't surprising. Whereas older generations are sometimes reluctant to adopt new technologies, driverless cars promise real value to these age groups in particular. Older adults, especially those with limited mobility or difficulty driving on their own are one of the classic use-cases for driverless cars.

    This is especially interesting when you consider that younger people are generally more interested in travel-related technologies than older ones.

    When it comes to driverless cars, differences in attitude are more pronounced based on factors not related to age. College graduates, for example, are particularly interested in driverless cars compared with those who have less education: 59 percent of college graduates said they would like to use a driverless car compared with 38 percent of those with a high-school diploma or less.

    Where a person lives matters, too. More people who lived in cities and suburbs said they wanted to try driverless cars than those who lived in rural areas.

    While there's reason to believe that interest in self-driving cars is going up across the board, a person's age will have little to do with how self-driving cars can become mainstream. Once driverless cars are actually available for sale, the early adopters will be the people who can afford to buy them.