【题目】在人口的数量增长变化过程中，首先开始转变的是( )
A. 出生率 B. 死亡率 C. 自然增长率 D. 人口基数
【答案】B
【解析】本题考查人口增长。自然增长率的变换中首先变换的是死亡率，由于经济水平的提高，科技的发展，医疗水平的进步，死亡率首先发生变化，而出生率则主要受人的主观意识的影响，在原始社会死亡率极高，人类为了种族的延续努力增加人口数量，所以出生率和死亡率都很高，进入农业社会生产力有了一定的发展，死亡率有所减低，人们虽然需要更多的劳动力，但由于家庭经济能力有限，无法供养更多的人口，所以死亡率有所降低，出生率略微下降，工业社会后，生产力水平大幅提高，死亡率迅速下降，自然增长率也下降，经济发达后，死亡率保持在一个较低的水平，人们的观念也有所改变，所以死亡率和生育率都降低到一个较低的水平。首先转变的是死亡率，故选B。
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说明文 | 人际交往中一个重要的原则 | 303 | 17分钟 | ★★★☆☆ |
People are always asking what the most important element to a healthy relationship is. The 1 is there are many. But there is one really important thing that all great and healthy relationships have in common— 2 . Yes, of course, there are some little 3 lies even in the best of relationships— 4 surprises or unexpected birthday parties—but the truth is that happy couples communicate honestly and don’t 5 to protect their own interests. So how can you have more open 6 in your own relationship?
First, remember that honesty is the best policy even 7 your partner might not like what you have to say. Yes, it may be 8 to tell your guy that you don’t like one of his friends. But lying or holding things 9 will make things worse in the long run.
The next thing to be 10 is to say what you have to say 11 . If your partner feels 12 ,he will be less 13 to what you have to say and may even become defensive. Your delivery is of utmost importance when you are discussing sensitive issues. Think through what you want to say 14 before you bring it up. You don’t want to 15 the person that you love. You just want them to be 16 of the truth.
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