With his leg lame and his teeth uneven, the boy thought of himself as the most unfortunate child in the world. He 1 played with his classmates, and when asked to answer questions, he always2his head without a word.

    One spring, his father brought home some saplings (树苗). 3 of his children would plant a sapling and he promised, “Whoever4his sapling best shall get a gift.” The boy certainly wanted to get the gift. 5 seeing his brothers and sisters watering the trees, he 6 an idea: he hoped the tree he planted would die soon. So watering it once or twice, he never 7 it.

    Several days later, he was 8 to find it not only didn't die, but also grew so many fresh 9. Compared with those of his brothers and sisters, his appeared greener. His father kept his 10, bought the boy a gift and said he would become an outstanding 11 after growing up.

    From then on, the boy slowly became 12 and confident. One evening, he suddenly 13 his biology teacher once said that plants   14grow at night. Why not go to see the tree? 

    When he came to the courtyard, he found his father working near the tree! Instantly he 15: Father had been secretly 16 his tree! He returned to his room, tears 17 in his eyes.

    Decades passed. The boy didn't become a botanist. 18, he became the U.S. President. His name was Franklin Roosevelt.

   19 is the best nourishment (滋养品) of life. 20 it is just a bucket of water, it can make the tree of life grow well!

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How to Survive Embarrassing Moments

    Have you ever done something embarrassing? At that moment, you probably wished you could disappear into thin air. Unfortunately, embarrassing things happen to everyone at one time or another. The good news? You can keep the damage to the minimum．Here's some help．

Laugh it off

    You're staring at your crush （意中人） so hard that you walk into a wall．You trip over your own feet and drop all your books．The best thing you can do? As long as you're not seriously hurt, laugh it off．Say like "Hey, I can teach you to do that if you want to!" or "It took me years to learn that!" By laughing at yourself, you show people you're confident and still in control of the situation．That's bound to make a stronger impression than the fact that you dropped a stack of books．

Move on

    Some situations are too personal to laugh off．Your underwear falls out of your backpack. Your bathing suit falls off in the pool．You pass gas while giving a presentation．Making a joke would just call more attention to what happened — and that's the last thing you want．What  now? You can just pretend nothing happened and go back to what you were doing, or you can acknowledge it with a "Oh, that was awkward" and then move on．

    If there's a joker who thinks it's a good idea to point out how badly you just embarrassed yourself, fix him with a glare and then go back to whatever you were doing．Tell yourself he's a  little bug on the ground, not even worth thinking about．Remind yourself that it's over, done．Move on．

Apologize and move on

    Some embarrassing situations pack a double punch．Not only do you embarrass yourself,  but you make someone else feel bad．You say to a friend that another friend is such a copycat, and then realize the copycat is standing right behind you．You imitate your teacher's unusual accent just as the teacher walks in．Now you're embarrassed and they're mad or hurt．

    Making a joke now would make the situation even worse, so don't go there．Although you might feel like running away or even crying, neither of those responses will make you look better．Instead, apologize, "I'm so sorry．That was really mean of me．"

    If you've been disrespectful to a teacher or a parent, accept whatever consequences without complaint．If you've hurt a friend, do your best to make it up to them．Once you've done all you can to make things right again, move on．If someone else brings it up, just say, "I feel bad enough about that —can we just let it go, please?"

    The next time you're stuck in an embarrassing moment, remind yourself that you're a strong person and you can get through this．Stay calm and act confident and the moment will pass．

    One morning, I was waiting at the bus stop, worried about (be) late for school. There were many people waiting at the bus stop,  some of them looked very anxious and (disappoint). When the bus finally came, we all hurried on board. I got a place next  the window, so I had a good view of the sidewalk. A boy on a bike (catch) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver, but he refused (stop) until we reached the next stop. Still, the boy kept  (ride). He was carrying something over his shoulder and shouting. Finally, when we came to the next stop, the boy ran up to the door of the bus. I heard an excited conversation. Then the driver stood up and asked, " anyone lose a suitcase at the last stop?" A woman on the bus shouted, "Oh dear! It's. (I). " She pushed her way to the driver and took the suitcase thankfully. Everyone on the bus began talking about what the boy had done, and the crowd of strangers (sudden) became friendly to one another.

    It was extreme cold last Monday morning. While I was walking in my way to school, I noticed two street cleaner sweeping the street. Seeing them are working so hard on such a cold morning, I was moved and made up my mind do something for them. After arriving at school, I discussed with some classmates that we could do. The next day, we got up early and preparing porridge at home. When we handed the cleaners the hot porridge and expressed us appreciation for their hard work, they looked a little surprising at first. And then they took the porridge and thanked us happily. Since it was very cold, we all felt warm at that moment.

（1）甲烷的结构式　 　；

（2）乙烯的电子式　 　；

（3）写出下列基团（或官能团）的名称或结构简式：﹣OH 、异丙基 、醛基 

It to buy the cheapest computer just to save a little money.