题干

函数f(x)= lg
2
x
x
的定义域是(   )

A:(0,2)

B:(0,1)∪(1,2)

C:(0,2

D:(0,1)∪(1,2

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D

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    A lot of kids and adults say they get nervous during social situations. Maybe it's speaking up in class or making a phone call or just trying something new. You might feel butterflies in your stomach, or your heart may beat faster or you get suddenly sweaty. ____ And if fear of being embarrassed or making a mistake is getting in your way, there are some things you can try on your own to help.

    ____

    Experts agree that avoiding situations that make us anxious can actually make things worse in the long run. Getting out of something you didn't want to do might make you feel better in the moment, but you will still feel anxious the next time you're asked to do it.

    Push yourself.

    While leaving your comfort zone isn't easy, it can be very good for you. That's because anxiety tends to go away when you start doing the things that make you anxious.____You might find you have the skills to handle it. And next time you're in that situation you might feel less self-conscious.

    Practice a lot.

    As an experiment, try doing something that makes you nervous.____ Whatever you do, you'll find that it gets easier over time. That's because by practicing the things that make you nervous you are actually improving your ability to easily handle them.

    Relax yourself.

    Instead of trying to relax by watching television or visiting a website, try a deep relaxation practice that has a physical effect on the mind.____

A. Don't avoid something.

B. Being nervous is uncommon.

C. Pay no attention to your original thoughts.

D. Those things are your body's reaction to fear.

E. Start with little things like answering questions in class.

F. So try to face your anxiety and fear and see what happens.

G. For example, doing things like yoga can also help you stay calm.