For centuries people have hunted animals for food and pleasure.The invention of the gun made it so easy for humans to hunt that some animals were lolled by the thousands and even became extinct（绝种的）.This brings up some serious problems since breaks in the food chain upset the balance of nature.

    Large animals like tigers are being killed by the hundreds every year in India.The Royal Bengal tiger is the only type that exists in India and their number is greatly reduced every year because of poaching（偷猎）.The present number is about 2,000, all of which live in tiger reserves.Two hundred years ago the population was 23,000 or more.

    During the British rule of India,many of the so-called English gentlemen killed tigers for pleasure and to show their bravery.This seems stupid because killing an innocent（无辜的）creature with a gun is not a brave deed.

    Today the tiger skin is very popular.Rich people and fashion designers have no idea what they are doing. Competition between the rich to show off makes them blind to the serious effects.People persuade villagers to kill tigers to get money,and they do it because they are poor and need to feed their families.We must educate them,and the government should give them proper jobs to help solve this problem.

    The people to blame are those who buy animal products like ivories,furs,tiger bones for medicine and handbags made of animal skins.They must be put behind bars to stop this kind of trade.The earth is home for everyone on it. The trees,animals,birds,and fish of all kinds belong here as much as we do.Only we have the power to change their fate.

    Girls who lack confidence in school have a new champion. She is only 10 years old. Alice Tapper, a fifth - grader says, that her goal is to encourage girls of all ages to “be more confident in raising their hands”. Alice cared so much about the issue (问题) that she helped create a Girl Scout badge (徽章).

    The pink badge—Alice chose her favorite color—shows three hands reaching for the sky. It says, “Be brave. Raise your hand.”

    Alice's idea came during a fourth - grade field trip to Jamestown, Virginia. She found that boys raised their hands to answer questions even though they weren't sure of the answers. The girls just listened quietly.

    “Girls are afraid to raise their hands because they get shy. They have to be 90 percent sure, while boys just raise their hands and say, 'I know it,'” Alice said during a recent interview. She added that girls should have confidence, step up, and become leaders by raising their hands for women are equal to men.

    Alice's “Raise Your Hand” badge has become wildly popular, and not just in the United States. “People in Japan and China want to use the badge,” she said. “We sold out the badge quickly, but we're making more.”

    Alice wants to be a teacher when she grows up. But first, she wants to see a revolution in confidence for girls of all ages. She knows that won't happen overnight. “ It takes time,” Alice said, “but I can speed up the process.”

    It took place at the Biltmore Hotel. My grandmother, my mother, and I were having lunch after a morning spent shopping. I gladly ordered a Salisbury steak. When brought to the table, it was accompanied by a plate of peas. I do not like peas now. I did not like peas then. I have always hated peas.

    “Eat your peas,” my grandmother said.

    “Mother,” said my mother in her warning voice. “He doesn't like peas. Leave him alone.”

    My grandmother did not reply, but leaned in my direction, looked me in the eye, and spoke out the fateful words that changed my life, “I'll pay you five dollars if you eat those peas.”

    I only knew that five dollars was a huge, nearly unimaginable amount of money, and awful as peas were, only one plate of them stood between me and the possession of that five dollars. I began to force them down my throat.

    My mother looked livid (铁青色的). My grandmother had a self-satisfied look and said, “I can do what I want, Ellen, and you can't stop me.” My mother glared at her mother. She glared at me. No one can glare like my mother. If there were a glaring Olympics, she would undoubtedly win the gold medal.

    I, of course, kept shoving peas down my throat, and every single pea made me want to throw up, but the magical image of the five dollars floated before me, and I finally swallowed every last one of them. My grandmother handed me the five dollars with satisfaction. My mother continued to glare in silence.

    That night, at dinner, my mother served two of my all-time favorite foods, meatloaf and mashed potatoes. Along with them came a big, steaming bowl of peas. She offered me some peas, and of course I declined. My mother fixed me with a cold eye as she heaped（堆积) a huge pile of peas onto my plate. Then came the words that were to haunt (萦绕) me for years. “You ate them for money,” she said, “You can eat them for love.”

    There are some very good things about open education. This way of teaching allows the students to grow as people, and to develop their own interests in many subjects. Open education allows students to be responsible for their own education, as they are responsible for what they do in life. Some students do badly in a traditional classroom. The open classroom may allow them to enjoy learning. Some students will be happier in an open education school. They will not have to worry about grades or rules. For students who worry about these things a lot, it is a good idea to be in an open classroom.

    But many students will not do well in an open classroom. For some students, there are too few rules. These students will do little in school. They will not make good use of open education. Because open education is so different from traditional education, these students may have a problem getting used to making so many choices. For many students it is important to have some rules in the classroom. They worry about the rules even when there are no rules. Even a few rules will help this kind of students. The last point about open education is that some traditional teachers do not like it. Many teachers do not believe in open education. Teachers who want to have an open classroom may have many problems at their schools.

    You now know what open education is. Some of its good points and bad points have been explained. You may have your own opinion about open education. The writer thinks that open education is a good idea, but only in theory. In actual fact, it may not work very well in a real class or school. The writer believes that most students, but of course not all students, want some structure in their classes. They want and need to have rules. In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study those subjects if they did not have to.

    The values of artistic works, according to cultural relativism (相对主义), are simply reflections of local and economic conditions. Such a view, however, fails to explain the ability of some works of art to excite the human mind across cultures and through centuries.

    History has witnessed the endless production of Shakespearean plays in every major language of the world. It is never rare to find that Mozart packs Japanese concert hall, as Japanese painter Hiroshige does Paris galleries. Unique works of this kind are different from today's popular art, even if they began as works of popular art. They have set themselves apart in their timeless appeal and will probably be enjoyed for centuries into the future.

    In a 1757 essay, the philosopher David Hume argued that because “the general principles of tastes are uniform (不变的) in human nature,” the value of some works of art might be essentially permanent. He observed that Homer was still admired after 2000 years. Works of this type, he believed, spoke to deep and unvarying features of human nature and could continue to exist over centuries.

    Now researchers are applying scientific methods to the study of the universality of art. For example, evolutionary psychology is being used by literary scholars to explain the long-lasting themes and plot devices in fiction. The structures of musical pieces are now open to experimental analysis as never before. Research findings seem to indicate that the creation by a great artist is as permanent an achievement as the discovery by a great scientist.

Smart Water Bottles

Hidrate Spark Smart Water Bottle

This bottle is our top overall pick, because it tracks your water intake, connects to your smartphone using Bluetooth, and records your data in a mobile app. If you forget to drink, this bottle will flash to signal to you. You can also use the app's Find My Bottle feature to track its location. It's available in a range of bright colors and sizes. The only drawback is that there's no self-cleaning feature.

ICEWATER Smart Water Bottle

If you're looking for a smart water bottle while saving some money, we recommend this one. There's a lock feature that stops water from flowing out when it's not in use. This bottle can play music through Bluetooth and comes in both plastic and steel versions. It's not dishwasher safe, however.

LARQ Bottle PureVis

It is perfect for walks, hikes, or sightseeing trips. To use the bottle's self-cleaning function, simply fill it up with water, press the switch, and wait. UV-C LED technology kills off harmful bacteria inside. Besides, the battery can last up to one month on a single charge. Just note that this bottle can't track your water intake.

CrazyCap UV Water Purifier & Bottle

It comes with a lifetime warranty (保修单), so you can be confident that it'll hold up even after the sudden fall. Unfortunately, it can't track your water intake, but the double-walled bottle can keep water cold for up to 24 hours or hot for up to 12 . There are a wide range of bright colors and patterns. The bottle has two self-cleaning modes. It will automatically clean every four hours.