[多项选择]有的动物学家和心理学家把现代人比成笼中的狮子。他们认为人们生活在拥挤的城市里，与动物园里的动物很相似。因此，城市的居民变得特别地好斗。如果人口增长速度慢一些，人们会有更多的空间和自由。在史前，大约六十人的群体会有数公里的空间可供漫步和觅食。假如现在还有这样的条件，人类就不会比其他动物更好斗。目前可能多达三万人在同一栋办公室里工作。这样，人们之间变得寻衅好斗也就不足为奇了。实际上，要他们不这样做几乎是不可能的。近年，由于世界人口的增长，人类必定变得更为好斗了。

参考答案:
Some zoologists and psychologists compare modem man to a caged lion. Living conditions in crowded cities, they say, are similar to those of animals in a zoo and make the inhabitants unusually aggressive. If the human population had not increased so rapidly, people would have had more space and freedom. In prehistoric times a group of about F0 people had many kilometres of empty land to wander and search for food in. If conditions had remained thus, man might have been no more aggressive than his fellow creatures. As it is, it is possible for as many as C0,000 people behave aggressively towards each other. In fact, it is almost impossible for them to behave otherwise. Man must have be- come more aggressive over the years as the world population has increased.
答案解析:[详细讲解] 这段句子并不怎么复杂，但翻译简单句子时也应注意一些翻译技巧。汉语的第二三两句较短，且意思联系较紧，译成英文时合成一句，采用了“合译法”。第三句中采用“正说反译法”将“慢一些”译成“not