根据短文内容回答问题。
Think of life as a game in which you are playing with five balls in the air. You name them work,
family, health, friends and spirit（精神）and you keep all of them in the air. You will soon understand
that work is a rubber ball. If you drop it, it will bounce（弹跳）back.
But the other four balls, family, health, friends and spirit, are made of glasses. If you drop one of
these, they will be broken. They will never be the same.You must understand that and try to have
balance in your life. How?
Don't look down on your worth by comparing yourself with others. It is because we are different
and each of us is special.
Don't let other people set goals for you. Only you know what is the best for yourself.
Don't give up when you still have something to give.
Nothing is really over until the moment you stop trying.
Don't be afraid to fight difficulties. It is by taking chances that we learn how to be brave.
Don't shut love out of your life by saying it's impossible. The quickest way to receive love is to give
it; the fastest way to lose love is to hold it too tightly; the best way to keep love is to give it wings.
Don't run through life so fast that you- forget not only where you've been, but also where you are
going.
Don't be afraid to learn. Knowledge is weightless. It's a treasure (珍宝) you can always carry
easily.
Don't use time or words carelessly. You can't get them back. Life is not a competition, but a trip,
step by step.
Yesterday is history, tomorrow is a mystery (秘密), and today is a gift: that's why wc call it "the
present".
1. What are the five balls of life?
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2. What's the best way to give love?
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3. What's the meaning of the underlined sentence in English?
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4. What's the best title of the passage?
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和
间颊侧龈 * * 见一椭圆形增生物，探易出血，未探及龈下牙石。X线片示