How airplanes fly?

People {#blank#}1{#/blank#} (try) for a long time before they invented a {#blank#}2{#/blank#} (success) "flying machine". Now there {#blank#}3{#/blank#} (be) so many {#blank#}4{#/blank#} (plane) in the sky.

    An airplane {#blank#}5{#/blank#} (fly) because of the upward force(力量) of {#blank#}6{#/blank#} (move) air against its wings(翼). To get that moving air, it needs something {#blank#}7{#/blank#} (push) it forward—like a motor-driven propeller(螺旋桨) or a jet engine(喷气发动机). You can fly a kite if there  {#blank#}8{#/blank#} (be) enough wind to hold it up. An airplane is like a kite with such force!

    More and {#blank#}9{#/blank#} (many) young people are getting to like making model planes now. How about you? Are you interested in it after {#blank#}10{#/blank#} (read) this article?

    "How are you?" It's a question that seems simple, but {#blank#}1{#/blank#}can really make people feel very strange.

    Last month, Alina Simone wrote in the New York Times about the {#blank#}2{#/blank#}(difficult) that Russians have with this question. The same question, {#blank#}3{#/blank#}Russian language and culture, is always answered in a negative(负面的) way. In Russia, when asked "How are you?", people usually complain(抱怨) about health, weather or things that {#blank#}4{#/blank#}(happen) recently. So when they're asked, they don't know what to do.

    In English speaking countries, "How are you?" has one standard answer: "Fine, and you?" That's because it is {#blank#}5{#/blank#}about getting information but a greeting. {#blank#}6{#/blank#}an English speaking friend really wants to know what's going on in your life, he/she is more likely to ask："what have you been up to?" or "what's new?"

    But I understand why people are so {#blank#}7{#/blank#}(surprise) about it. When we learn second languages, we have to learn rules for using words as much as words themselves. {#blank#}8{#/blank#}can you learn those rules? {#blank#}9{#/blank#}(watch) English-language TV shows is a good place to start. If you can, try to make an English-speaking friend or pen pal and talk to him/her {#blank#}10{#/blank#}(direct).

    So how are you?

    Are you feeling very busy all the time? If you always think much work to do, it will make you feel {#blank#}1{#/blank#} (bore). You should know that you'll also have so many things to do tomorrow. Why {#blank#}2{#/blank#} do the things you have to do today? So if you have a little time to relax, just enjoy yourself. It doesn't mean you are lazy. That is because only when you are relaxed, you can do best. Here are some {#blank#}3{#/blank#} (way) for you to relax.

    Firstly, show love to everyone you meet. Talk to your friends {#blank#}4{#/blank#} smile to a stranger. {#blank#}5{#/blank#} (volunteer) at a hospital is also a good way. The more you give, the {#blank#}6{#/blank#} you will get.

    {#blank#}7{#/blank#}, take away the old things you don't need or send them to someone {#blank#}8{#/blank#} needs them.

    Thirdly, watch the world as a child does. Go {#blank#}9{#/blank#} a walk in a park and have a picnic. It is helpful {#blank#}10{#/blank#}(lie) down on the grass and look at the blue sky. You can also sit down and listen to your favorite music or even dance to it. You'll find your life more interesting.