You may do it yourself, ________ ask someone else to do it.

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    When you go to have dinner in a foreigner’s home．please remember the following things：

    At table，when the hostess picks up her napkin，you may pick up yours and put it on your legs．If a servant passes food around，he will pass the dish to you at your left hand so that you can easily serve yourself with your right hand．Never serve yourself when the dish is on your right；it is then the turn of your neighbor on the right．

    Do not reach across the table or in front of someone to get something-that is not polite．Ask him or her to pass it to you．

    There are things in the middle of the table，such as bread，butter and candies．You shouldn’t take any until the hostess tells the servant to pass them to you．

    Do not leave your seat without saying anything．If you need to leave the table to go to the washroom or to do something else，you should say，“Excuse me for a moment，please．”

1．You may pick up your napkin and put it on your legs ________ the hostess picks up hers.

    A．before          B．after      C．and then          D．then

2．Why does a servant pass the dish to you on your left hand?

    A．Because you can easily serve yourself with your left hand．

    B．Because you can easily serve yourself with your right hand．

    C．Because you can’t easily serve yourself with your right hand．

    D．Because a servant likes doing so．

3．When the dish is on your right，you ________ serve yourself．

    A．should          B．can        C．may         D．shouldn’t

4．Which of the following is NOT true?

    A．If the food isn’t near you，you shouldn’t stand up to reach for it.

    B．You may take any food at any time．

    C．When you have to leave your seat，you need to say，“Excuse me for a moment，please．”

    D．The dish is passed to you on your left．

5．The article is mainly talking about________.

    A．the table manners                B．how to behave in public

    C．how to be a polite guest         D．when to serve yourself

"Earworms", some people call them. Songs that get stuck in your head go round and round, sometimes for days, sometimes for months. For no clear reason you cannot help yourself from humming or singing a tune by Lady Gaga.
To a psychologist, the most interesting thing about earworms is that they show a part of our mind that is clearly outside of our control. Earworms arrive without permission and refuse to leave when we tell them to. They are parasites (寄生虫) living in a part of our minds.
If you have got an earworm you can suffer an attack of it simply by someone mentioning the tune, without having to hear it. This proves that earworms are a part of long-term memory. Humans have an "inner ear", for remembering phone numbers, for instance. When it gets infected with earworms, rather than review our plans for the day, or lists of things to remember, the inner ear gets stuck on a few short bars of music or a couple of phrases from a song. A part of us that we normally do not have to think about, that should just do what we ask, has been turned against us, upsetting us with a request that we never asked for. The mind is an inner world which we do not have complete knowledge of, or have control over.
Fortunately psychology can provide some advice on how to deal with an uncontrollable mind. Consider the famous "don’t think of a white bear" problem, which tells you to try not to think about white bears, or to do something else, to avoid both thinking of the white bear and not thinking of the white bear. For earworms, the solution may be the same. Our inner ear has become infected with an earworm. This is a part not under our control, so just sending in instructions to "shut up" is unlikely to be of much help (and has been shown to make it worse). Much better is to employ the inner ear in another task. If your mind is poisoned by Brittany Spears’ Toxic, for instance, then try singing Kylie Minogue’s Can’t Get You out Of My Head. Let me know if it works!
【小题1】According to the passage, earworms are ______.