题干

肺泡外面包绕着丰富的____ 管,肺泡壁和毛细血管壁都是由单层细胞构成。当你吸气时,肺泡鼓起来,空气中的____ 透过这两层管壁进入血液;同时,血液中的____ 也透过这两层管壁进入肺泡。

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毛细血管,氧气,二氧化碳

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    Most people say “yes” much more readily than “no”.

    A friend is moving house this weekend and would like some help, and you agree. But, what you really wanted was a couple of quiet days relaxing at home. Or a roommate spends the entire weekends playing video games and wants to borrow your homework for “reference”. But, you've just finished it after taking a whole day to work hard.

    Many people say “yes” to those kinds of requests. They tend not to consider their own interests and feelings, and are often angry with themselves afterwards.

    Saying “no” requires courage and considerable practice, in fact, according to psychologists.

    “Everyone wants to be liked,” says Gabriel Steinki, a German psychologist. “Saying ‘no' risk losing the affection of the person asking the favor or even a job.”

    The result is that many people say “yes” just for keeping the peace. But experts say this is regrettable. Anyone should have the right to say “no”.

    In fact, rejecting a request can even help to strengthen a relationship because it expresses a true feeling.

    But, for people used to agreeing to every request, changing can be a long and uncomfortable learning process.

    Most people believe that “If I say ‘no', I'll lose the affection of the person. But the affection is important to me.” This way of thinking can be replaced by this “If he only likes me because I always do what suits him, then the price of his affection is too high in the long term.”

    Steinki says the key is talking to the other person to find a mutual(相互的) solution. “One needs to present the situation from one's own point of view, and to suggest how the situation can be dealt with to the advantage of both parties. The other person must have the feeling that his interests are being considered.”

    When the refusal is not accepted, Steinki advises giving the reasons calmly again until the person gets the message.