【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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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.
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