题干

下列关于神经调节的错误叙述是(   )

A:在刺激丰富的环境中生长的正常孩子神经突起及突触数量将会增多

B:当神经纤维的某一部位受到刺激产生兴奋时,膜内为正电位,膜外为负电位,电流在膜内由兴奋部位流向未兴奋部位,在膜外由未兴奋部位流向兴奋部位

C:兴奋只能以局部电流的形式在多个神经元之间单向传递

D:传出神经元的轴突上某一点受到刺激,兴奋会向轴突两端进行传导

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D

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    Perhaps you think you could easily add to your happiness with more money. Strange as it may seem, if you're unsatisfied, the issue is not a lack of means to meet your desires but a lack of desires—not that you cannot satisfy your tastes but that you don't have enough tastes.

    Real riches consist of well-developed and hearty capacities (能力) to enjoy life. Most people are already swamped(淹没) with things. They eat, wear, go and talk too much.They live in too big a house with too many rooms, yet their house of life is a deserted hut.

    Your house of life ought to be a mansion (豪宅) , a royal palace.  Every new taste, every additional interest, every fresh enthusiasm adds a room.  Here are several rooms your house of life should have.

    Art should be a desire for you to develop simply because the world is full of beautiful things. If you only understood how to enjoy them and feed your spirit on them, they would make you as happy as to find plenty of ham and eggs when you're hungry.

    Literature, classic literature, is a beautiful, richly furnished room where you might find many an hour of rest and refreshment. To gain that love would go toward making you a rich person, for a rich person is not someone who has a library but who likes a library.

    Music like Mozart's and Bach's shouldn't be absent. Real riches are of the spirit. And when you've brought that spirit up to where classical music feeds it and makes you a little drunk, you have increased your thrills and bettered them. And life is a matter of thrills.

    Sports, without which you remain poor, mean a lot in life. No matter who you are, you would be more human, and your house of life would be better supported against the had days, if you could, and did, play a bit.

    Whatever rooms you might add to your house of life, the secret of enjoying life is to keep adding.