Here are some undiscovered places around the world, which will surely impress you.

Byblos, Lebanon

    This quiet settlement north of Beirut in Lebanon has been around a really long lime. Today, its rich history is well-represented in its ruins, which include ancient temples and tombs and Neolithic houses. Three sites in particular steal the show: the restored Roman amphitheatre (圆形剧场）, the grand 12^th century Crusader castle, and the beautiful]y restored medieval open market.

Carreg Cennen, Carmarthenshire, Wales

    The ruins of Carreg Cennen must be among the most noticeable sites in Wales. Carreg Cennen is defended by two drawbridges and three gate towers, although it hasn't seen much action since it was partly damaged in 1462, during the Wars of the Roses. However, one rare feature of the castle is unchanged. Ifs the stone passage that leads down to a natural cave underneath.

Providence, Rhode Island, US

    Rhode Island is the smallest state in the US. Its capital, Providence, has many of the attractions. Ivy League member Brown University and the famous Rhode Island School of Design (RISD) give the city a strong student influence. Up on College Hill, east of the Providence River, are streets lined with 18^th century wood framed houses.

Sequoia National Park, California, US

    Not content with having the worlds tallest (coast redwoods) and oldest (bristlecone pines), California is also home to the largest tree—the giant sequoia (红杉树). It grows only to its lull size in the Sierra Nevada mountains. Many of these trees are found in the Yosemite National Park, but for more quality time with the trees, it's best to head south to the far less known Sequoia National Park, which gets a quarter of Yosemite's visitor numbers.

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    No one is sure how the ancient Egyptians built the pyramids near Cairo. But a new study suggests they used a little rock‘n'roll. Long-ago builders could have attached wooden pole s to the stones and rolled then across the sand, the scientists say.

     “Technically, I think what they're proposing is possible,” physicist Daniel Bonn said.

    People have long puzzled over how the Egyptians moved such huge rocks. And there's no obvious answer. On average, each of the two million big stones weighed about as much as a large pickup truck. The Egyptians somehow moved the stone blocks to the pyramid site from about one kilometer away.

    The most popular view is that Egyptian workers slid the blocks along smooth paths. Many scientists suspect workers first would have put the blocks on sleds(滑板). Then they would have dragged them along paths. To make the work easier, workers may have lubricated the paths either with wet clay or with the fat from cattle. Bonn has now tested this idea by building small sleds and dragging heavy objects over sand.

    Evidence from the sand supports this idea. Researchers found small amounts of fat, as well as a large amount of stone and the remains of paths.

    However, physicist Joseph West thinks there might have been a simpler way , who led the new study . West said , “I was inspired while watching a television program showing how sleds might have helped with pyramid construction . I thought , ‘Why don't they just try rolling the things?'“A square could be turned into a rough sort of wheel by attaching wooden poles to its sides , he realized . That , he notes , should make a block of stone” a lot easier to roll than a square”.

    So he tried it.

    He and his students tied some poles to each of four sides of a 30-kilogram stone block. That action turned the block into somewhat a wheel. Then they placed the block on the ground.

    They wrapped one end of a rope around the block and pulled. The researchers found they could easily roll the block along different kinds of paths. They calculated that rolling the block required about as much force as moving it along a slippery(滑的)path.

    West hasn't tested his idea on larger blocks, but he thinks rolling has clear advantages over sliding. At least, workers wouldn't have needed to carry cattle fat or water to smooth the paths.

    It's common for children to grow up being told to minimize daydreaming, and instead to focus on lessons and class work. Historically, daydreaming students who go off on their own thoughts, rather than focusing on the teachers, the blackboard, or their class work, are often encouraged to stop allowing their attention to wander and to bring themselves back into the present moment. They're described as uninterested in school work and their future. Traditionally, daydreaming is seen as a practice that results in bad consequences.

    But recent studies are beginning to renounce those common beliefs by pointing out the potential benefits that daydreaming may provide. PsychCentral reports that Mary Smith, a psychological scientist and researcher, recently examined scientific writings and studies to gain a better understanding of the role of a reflective brain. These studies have shown that the brain has a network that is active when a person is daydreaming and that brain network can help memory and learning.

    Though paying attention in school is important, these results suggest that there should be time for students to daydream, too. Giving them the chance to reflect and daydream can help improve learning and development. Research also indicates that when students are permitted to daydream, they experience less anxiety and become more motivated. On the other hand, if students are warned against daydreaming, their knowledge of themselves and the world around them may suffer.

    As a result, educators are encouraged to promote a balance between outward and inward attention. A little bit of daydreaming to break up the hard focus on school activities can be beneficial, and it may help students become better, active learners.

    As for students, the lesson here is not to be afraid of doing some daydreaming. Sure, you want to pay attention to the vital information conveyed to you during your classes, but don't get discouraged if your mind wanders. A little bit of daydreaming is healthy.

    All of us know that smoking does harm to our health. But do you think everything will be OK as long as you quit smoking?

    Unfortunately, the answer is NO.

    New research has found that even if you give up smoking, the damage it has done to your genes (基因) will stay there for a much longer time. In the research, a team of US scientists studied the blood of 16,000 people. Among them, some were smokers, some used to smoke, and the rest were non-smokers. Scientists compared their genes and found that more than 7, 000 genes of smokers had changed—a number that is one-third of known human genes. According to NBC News, both heart disease and cancer are caused by genetic changes. Some people may have had the changes when they were born, but most people get them in their daily lives while doing things like smoking. When you stop smoking, a lot of these genes will return to normal within five years. This means your body is trying to heal (治愈) itself of the harmful effects of smoking. But the changes in some of the genes stay for longer. They can stay for as long as 30 years, It's almost like leaving a footprint on wet cement (水泥)—it will always be there, even when you've walked away and when the cement becomes dry. Although the study results may make people unhappy, there is a bright side: the findings could help scientists invent medicine to treat genetic damage caused by smoking or find ways to tell which people have heart disease or cancer risks.

    Miep Gies, the woman who hid the Dutch girl Anne Frank's diary from the Nazis to become one of the world's most-read books, died after a brief illness at the age of 100.

    It was Gies who guarded Anne's diary, and presented it to the girl's father, Otto, when he returned from the Auschwitz concentration camp(奥斯威辛集中营) at the end of World War Ⅱ—the only one of his family to survive.

    In her diary, Anne Frank wrote about her teenage life hiding from the Nazis in Amsterdam from 1942 to 1944, when the Nazi police discovered her and her family's hiding place. The diary, first published in 1947, has been translated into 70 languages.

    Anne Frank expressed a great wish to live on after her death. Miep Gies saw it as her duty to help in making this happen.

    Born in Vienna in 1909, Gies moved to the Netherlands at the age of 11. In 1933, she began working for Otto Frank at his trading company. At great risk to her own safety, she and four other helpers brought food and supplies to the Frank family hiding in a secret office building for more than two years.

    When she turned 100, Gies tried to play down her own role. "I'm not a hero," she said. "It wasn't something I planned in advance. I simply did what I could to help."

    Every day she received letters from all over the world with questions about her relationship with Anne Frank and her role as a helper. Gies received many honors for her role, including from the Netherlands, Germany and Israel.

It's generally believed that people act the way they do because of their personalities and attitudes .They recycle their garbage because the care about the environment .They pay $5 for a caramel brulée latte because they like expensive coffee drinks.

It's undeniable that behavior comes from our inner dispositions (性情), but in many instances we also draw inferences about who we are, as suggested by the social psychologist Daryl Bem , by observing our own behavior .We can be strangers to ourselves .If we knew our own minds, why would we need to guess what our preferences are from our behavior? If our minds were an open book, we would know exactly how much we care about the environment or like lattes .Actually, we often need to look to our behavior to figure out who we are.

Moreover, we don't just use our behavior to learn about our particular types of character—we infer characters that weren't there before .Our behavior is often shaped by little pressures around us, which we fail to recognize .Maybe we recycle because our wives and neighbors would disapprove if we didn't .Maybe we buy lattes in order to impress the people around us .We should not mistakenly believe that we always behave as a result of some inner disposition.

Whatever pressures there can be or inferences one can make, people become what they do, though it may not be in compliance (符合) with their true desires .Therefore, we should all bear in mind Kurt Vonnegut's advice: "We are what we pretend to be, so we must be careful about what we pretend to be."