Every art lover has a dream—to buy an old painting at a low price and later discover that it's worth millions. {#blank#}1{#/blank#} But this dream can become a nightmare if it turns out that the painting is stolen.

    The following true story happened in London. An art collector was walking around an outdoor market in the East End when he saw two interesting paintings.{#blank#}2{#/blank#} He decided to buy them after they got the price down to 145 pounds. The art collector knew it was a good deal, but he wasn't sure how much his paintings were really worth.

    He decided to take the paintings to the Sorheby's, a famous auction house.{#blank#}3{#/blank#} They were painted by two of England greatest painters Thomas Gainsborough and Sir Joshua Reynolds. They had been stolen from Lincoln's Inn, a famous historical building in London and were worth about two million pounds.

    {#blank#}4{#/blank#} Experts at Sotheby's were convinced that he was an art thief and called the police. Within minutes the police arrived. They arrested the frightened man and took him to the police station. After hours of questioning, the police realized that they had made a mistake and let the man go.

    The art collector returned them immediately because he was worried about his good name.{#blank#}5{#/blank#} So the stolen paintings are now back at Lincoln's Inn.

A. Nothing is more exciting.

B. At this point the art collector was in trouble.

C. An auction house is a place where things are sold to whoever offers the most.

D. Although he wasn't an art expert, he saw that they were old.

E. Obviously, he did not want to be associated with stolen works.

F. The art experts who saw the paintings recognized them immediately.

G. He recognized that they were stolen works worth great value.

5 Lifestyle Choices You Will Feel in Your Bones

    YOU SPEND TOO LITTLE TIME ON THE MOVE

    "Bone is a living tissue," says Jonathan Lee, a physician at Montefiore Health System in New York City. "The more you use it, the more it will adapt and strengthen. Likewise, if it is not subjected to loading, it will waste away. "The solution? Weight-bearing exercise-even just walking. Strength training Counts too

    YOU EAT SALTY SNACKS

    A study from Japan showed that women over fifty who had high sodium (钠) intakes were more than four times as likely to have a fracture (break of. bones)As those with low sodium intakes. That's because as the kidneys(肾) excrete(排出) the sodium, calcium is reducing from the bloodstream too.

    YOU SHUT SUNLIGHTAWAY

    "Vitamin D is required for the body to successfully absorb and use calcium," Dr. Lee says. "Most Americans do not get enough sun exposure to generate enough natural vitamin D, and thus supplementation is essential." According to the National Osteoporosis Foundation, adults under 50 need 400 to 800 IU of vitamin D daily and adults 50. And older need 800 to 1,000 IU. Talk to your doctor about your specific needs based on where you live, what time of year it is, and which vitamin D-rich foods you eat.

    YOU'RE CASUAL WITH WINE

    Low levels of alcohol consumption may be good for your bones, according to a study from Oregon State University, but more than a couple of drinks a day has the opposite effect. "Too much alcohol can make it harder to absorb calcium," says Dr. Lee. Furthermore, "In women in particular, higher alcohol consumption can decrease estrogen (雌激素) levels, and this can also lead to osteoporosis(骨质疏松), "Dr. Lee says.

    YOU LIVE INANAREA WITH DIRTYAIR

    In a study recently published in the Lancet Planetary Health, researchers dealt with hospital data for 9.2 million Medicare participants in the Northeast and mid-Atlantic between 2003And 2010. They found that even a small increase in levels of pollutants in the air--may lead to an increase in bone fractures and osteoporosis in older adults. If you live in a smoggy area, use an air purifier filter at home, avoid exercising outdoors when the air quality is bad, and get screened for osteoporosis.

Are we alone in the universe? A team of scientists announced on January 6, 2015 that they had identified eight planets beyond our solar system, three or four of which orbit in their stars' "Goldilocks Zone" — the region where temperatures are not too hot or too cold for water, which is a necessary ingredient for life as we know it, to exist liquid form. This may be good news for people hoping that Earth is not the only inhabited world in the universe.

    The scientists, led by Dr. Guilermo Torres of the Harvard-Smithsonian Center for Astrophysics, made the discoveries using data collected by the planet-seeking Kepler telescope.

    NASA launched Kepler in 2009. Since then, the telescope has identified more than 1,000 planets outside of our solar system. Torres and his team analyzed the data about the eight newly discovered world to determine which ones are most likely to be similar to our Earth.

    Among the new discoveries, the scientists say the planets called Kepler438b and 442b are the closest to Earth. Kepler 438b is just about 10% larger than our planet, and gets 40% more of its energy from its star than Earth receives from the Sun. Temperatures there would be about 140 degrees. Kepler 442b is about 33% larger than Earth, but receives 30% less energy from its star. That would make it a potentially chillier world than our own. Torres says it is possible for life to exist and survive in either of those temperatures, but for that to happen, these planets would need to have another key ingredient for life: a heat-trapping atmosphere like Earth's.

    While these findings add to the possibility that life exists beyond Earth, Torres cautions against drawing conclusions, “We are not claiming they are inhabited,” he says. In fact, these planets are so far away that the scientists cannot observe them directly, which can be explanation for why for now it remains unknown whether these planets contain life. But the discovery of planets in their stars' habitable zones suggests that somewhere out there, some form of alien life may have taken hold.

    Living in the wild can be hard. Finding food and staying safe aren't easy. Each day, animals try to survive in their habitats. Not all animals get by on their own. Some animals form a close partnership with other kinds of animals. These pairings are called symbiotic(共生的)relationships.

    In a symbiotic relationship, the animals depend on each other. One animal helps the other meet its needs. Sounds good, right? Not always. Some animals are not very kind to their partners. In some cases, one animal meets its needs but hurts its partner. Take ticks(扁虱), for example. These insects suck blood to live. To get blood, they attach themselves to other kinds of animals. Ticks can pass germs(细菌)that cause disease instead of helping their hosts.

    In other relationships, animals don't treat their partners so poorly. Both animals benefit from living with the other animal.

    Small animals called cleaner shrimps(清洁虾)have found a way of helping fish. As their name suggests, the shrimps clean the fish. They hang out at what scientists call a cleaning station. A fish stops by. Then a shrimp climbs onto the fish and even steps into the fish's mouth. The shrimp uses its tiny claws to pick stuff off the fish's body. That can include dead skin and tiny pieces of food that can hurt the fish. The fish gets a nice cleaning. The shrimp enjoys a tasty meal of fish trash.

    Small birds called plovers(灰斑)are also in the cleaning business. They have big customers-crocodiles. Crocodiles have long noses filled with sharp teeth. Cleaning them is funny. When a crocodile opens its mouth, the plover hops right in. It lets the plover eat small, harmful animals attached to the crocodile's teeth. The plover gets an easy meal while the crocodile gets clean teeth.

    Recently, I've been following a simple rule that is helping me crush procrastination（拖延症）and making it easier for me to stick to good habits at the same time. {#blank#}1{#/blank#}There are two parts to the 2-Minute Rule…

    Part 1 -- If it takes less than two minutes, then do it now. {#blank#}2{#/blank#}For example, washing your dishes immediately after your meal, tossing the laundry in the washing machine, taking out the garbage, sending that email, and so on.

    If a task takes less than two minutes to complete, then follow the rule and do it right now.

    Part 2 -- When you start a new habit, it should take less than two minutes to do.

    Can all of your goals be accomplished in less than two minutes? Obviously not. But, every goal can be started in 2 minutes or less. {#blank#}3{#/blank#}

    It might sound like this strategy is too basic for grand life goals, but I beg to differ. The 2-Minute Rule works for big goals as well as small goals because of the inertia(惯性)of life. {#blank#}4{#/blank#} I love the 2-Minute Rule because it embraces the idea that all sorts of good things happen once you get started.

    The most important part of any new habit is getting started -- not just the first time, but each time. It's not about performance, it's about consistently taking action.

    I can't ensure whether or not the 2-Minute Rule will work for you. {#blank#}5{#/blank#} Anyone can spare the next 120 seconds. Use this time to get one thing done. Go.

A. I call this little strategy the "2-Minute Rule".

B. And that's the purpose behind this little rule.

C. Here's what you need to know to stop procrastinating.

D. Once you start doing something, it's easier to continue doing it.

E. But, I can ensure that it will never work if you never try it.

F. The goal is to make it easier for you to get started on the things you should be doing.

G. It's surprising how many things we put off that we could get done in two minutes or less.

On May 29,2021,a documentary film called One Day When We Were Younginvited 16 alumni(校友)—all famous scholars—{#blank#}1{#/blank#}(share) their stories about the National Southwest Associated University. It {#blank#}2{#/blank#}(bear) when Japan invaded northern China in 1937. To save their educational and intellectual heritage {#blank#}3{#/blank#} the Japanese invasion, the remaining students and faculty at Peking University, Tsinghua University and Nankai University first retreated to Changsha in Hunan Province, and {#blank#}4{#/blank#}(late) headed south toward Kunming in Yunnan Province. The three universities joined together as the National Southwest Associated University, {#blank#}5{#/blank#} was also known as Xinan Lianda in Chinese.

Xinan Lianda had 5 colleges and 26 departments, with 179 professors. Students there could have a higher education {#blank#}6{#/blank#}(base) in large part on the American model. It sought to provide general education and {#blank#}7{#/blank#}(academy) freedom.

Though Xinan Lianda is {#blank#}8{#/blank#}(physical) gone and each school moved back to its original home in 1946, the experience of studying there had {#blank#}9{#/blank#} everlasting impact on students.

"The National Southwest Associated University set a good example for contemporary Chinese universities, and there are many treasured {#blank#}10{#/blank#}(legacy) for us to inherit, to cherish, and to share," Li Zhong, vice-president of the university's Beijing alumni association, told the Global Times.