题目

It was a village in India. The people were poor. However, they were not unhappy. After all, their forefathers had lived in the same way for centuries. Then one day, some visitors from the city arrived. They told the villagers there were some people elsewhere who liked to eat frog’s legs. However, they did not have enough frogs of their own, and so they wanted to buy frogs from other places. This seemed like money for nothing. There were millions of frogs in the fields around, and they were no use to the villagers. All they had to do was to catch them. Agreement was reached, and the c1、下列关于对生命系统的叙述，错误的是（    ）  A．生命系统的各个层次可以相互联系，也可以没有关系，如细胞和生物圈  B．组织、细胞等都是生命系统不可分割的一部分  C．生命系统的各个层次是密切联系的  D．生物的生活环境也是生命系统的一部分