Online shopping is coming into fashion in most cities, where people are able to make full use of the rapidly-developed internet technology. Nowadays, can we find a person {#blank#}1{#/blank#}has not experienced online shopping? Definitely not.

    Online shopping {#blank#}2{#/blank#}(welcome) by most people due to various reasons. From the perspective of consumers, it can save some time for people who don't have much spare time. Just click the mouse, and they can get whatever they want while staying at home. For the retailers, it can cut some costs for those who don't have much circulating funds.{#blank#}3{#/blank#}(compare) with the traditional trade mode, they don't have to spend money in renting a house. However, there are still some {#blank#}4{#/blank#}(disadvantage) in online shopping. First, a face-to-face deal makes online shopping less {#blank#}5{#/blank#}(rely) and trustworthy. Second, people will lose {#blank#}6{#/blank#}fun of bargain.

    {#blank#}7{#/blank#}is undeniable that shopping on the Internet has become an irresistible trend in modern society. It's {#blank#}8{#/blank#}(true) urgent that we need to make the relative laws {#blank#}9{#/blank#}the rapid growth of online shopping. Only in this way can we enjoy the pleasure and convenience of online shopping without the concern of {#blank#}10{#/blank#}(cheat).

    In your daily life, there are many examples where your parents control hundreds {#blank#}1{#/blank#} things for you when you are a kid, such as the clothes you wear, the food you eat, where you go and how you get there. It is a good thing. Kids need this kind of{#blank#}2{#/blank#} (protect) and help because they are not old enough to take care of {#blank#}3{#/blank#} and make decisions{#blank#}4{#/blank#} (correct). But with you growing{#blank#}5{#/blank#}(old), the part of being a teen is developing your own identity—one that {#blank#}6{#/blank#}(separate) from your parents'. Different attitudes towards events like partying may lead to arguments, because your parents will always want to protect you and keep you safe, no matter how old you are. As {#blank#}7{#/blank#} result, your parents feel it hard to get used to the new situation with{#blank#}8{#/blank#} (increase) anxiety. What kids should keep in mind is {#blank#}9{#/blank#} in most cases, your parents can relate to what you're going through because they {#blank#}10{#/blank#} (be) teens once.

    A best friend is someone {#blank#}1{#/blank#} you can tell everything to, even your most personal {#blank#}2{#/blank#} (feel) and thoughts. Anne Frank treated her diary {#blank#}3{#/blank#} her best friend. The German Nazis were in search of Anne and her family. The family had to hide away from the chase. They didn't dare to go out even in the evenings. They had to stay {#blank#}4{#/blank#}(indoor) day and night. Not {#blank#}5{#/blank#}(be) able to go out for such a long time, Anne missed the beauty of nature so much that she {#blank#}6{#/blank#}(grow) crazy about everything to do with {#blank#}7{#/blank#}. She stayed up until eleven thirty one evening on purpose just to see {#blank#}8{#/blank#} moonlight. She said, "This is the first time that I have seen the moonlight {#blank#}9{#/blank#} I came here."

    {#blank#}10{#/blank#}(fortune), the family were discovered at last and taken away from the hiding place.

    However depressed you may be feeling now, if you look back, there certainly will have been events that made you happy—maybe the time {#blank#}1{#/blank#} you bought your first bicycle or you were awarded a scholarship. When good things happen, we feel excited, proud and happy.

    But the problem is, happiness doesn't usually last. The excitement of that first bicycle purchase wears off, and the pride in the scholarship gives way to the stress of performing {#blank#}2{#/blank#} (well) on the next exam.

    Psychologists call this phenomenon hedonic adaptation (享乐适应症)—that is, {#blank#}3{#/blank#} good something makes us feel, most of the time we drift back to {#blank#}4{#/blank#} we started. An often {#blank#}5{#/blank#} (quote) example is that lottery winners are no happier than non-winners eighteen months after their win.

    But don't despair. It is possible to make happiness last. Psychologists have found two anti-adaptation tools that are effective in sustaining happiness: variety and appreciation.

    Variety is, as we all know, the spice of life. But it's also a useful weapon {#blank#}6{#/blank#} adaptation. Positive changes that {#blank#}7{#/blank#} (experience) in a variety of ways are more likely to lead to lasting happiness. For example, you will feel happier about your volunteer work{#blank#}8{#/blank#} you are able to cope with new tasks every week. The second tool, appreciation, is in many ways the opposite of adaptation. It's about focusing on something, instead of letting it fade into the background. It is only when you appreciate something {#blank#}9{#/blank#} an enduring feeling of happiness will follow.

    Human beings spend a lot of time figuring out what makes them happy, but not enough time {#blank#}10{#/blank#} (try) to hang on to the happiness they already have. This is like focusing all your energy on making more money, without giving any thought to what you will do with the money. The key to happiness is to not only look for new opportunities but also to make the most of the ones you've been given.

    I remember reading a statement by a psychiatrist who said that if you ever feel depressed, the best thing to do {#blank#}1{#/blank#} to do something for someone else. Why? Because it gets you focused outward, not{#blank#}2{#/blank#}. It's hard to be depressed{#blank#}3{#/blank#} serving someone else. Ironically, a by-product of helping others is feeling wonderful yourself.

    I remember sitting in an airport one day, waiting for my{#blank#}4{#/blank#} (fly). I was excited because I had been upgraded to a {#blank#}5{#/blank#} ticket. And in first class, the seats are {#blank#}6{#/blank#} (big), the food is edible, and the flight attendants are actually nice. In fact, I had the best seat on the entire plane. Seat 1A. Before boarding, I noticed a young lady who had several carry-on bags and was holding a crying {#blank#}7{#/blank#}. Having just finished{#blank#}8{#/blank#} a book on doing random acts of {#blank#}9{#/blank#} (kind), I heard my conscience (良心) {#blank#}10{#/blank#} to me, "You scumbag. Let her have your ticket." I fought these promptings for a while but eventually caved in.

    China's Chang'e 5 mission {#blank#}1{#/blank#} (successful) delivered samples of moon rocks and dust to Earth on December 17, 2020. It marks {#blank#}2{#/blank#} first time in 44 years that moon rocks have been brought back to our planet.

    The sample capsule landed in Inner Mongolia {#blank#}3{#/blank#} a little after 2:00 a.m. Thursday local time. The drop-off was the ending of a 23-day mission that began on November 23, {#blank#}4{#/blank#} China sent up Chang'e 5 from a site on Hainan Island. The mission's goal was {#blank#}5{#/blank#} (collect) at least four pounds of material and bring it back to Earth.

    The material collected by Chang'e 5 was from a site in the northwest region of the moon's near side. This area was formed more recently, and the rocks here {#blank#}6{#/blank#} (think) to be only about 1.2 billion years old now. That means scientists {#blank#}7{#/blank#}(study) the material could learn more about the {#blank#}8{#/blank#} (evolve) of the moon.

Although Chang'e 5 was a short mission, it was one of {#blank#}9{#/blank#} (complex) projects undertaken by the Chinese space program so far. The country is far from done with the moon—Chang'e 6, {#blank#}10{#/blank#} (it) second lunar sample return, is ready to launch in 2023 or 2024.