Reading passages

106- Among the reasons of the emergence of infectious diseases, one not mentioned in the passage is ............ .
A) the distribution of animals all over the world
B) passing of micro-organisms from the tamed animals to the wild ones
C) simplicity of the curing methods of contagious illnesses
D) the expansion of the human populations to the wilderness
E) changing of the climates in the habitats of the wild animals
107- The extinction of amphibians in the rain forests of Central America and Australia could have been caused by .................. .
A) some infectious diseases that are still unknown
B) the expansion of mankind to new fertile regions
C) a fungal disease which has been detected lately
D) the fact that ancient people were ignorant of health-care
E) unsanitary living conditions ancient tribes were in
108- As a result of the expansion of human populations into wildlife habitats, ................ .
A) the possibility of the occurrence of new diseases increases
B) people get more and more stalwart against such infectious diseases as influenza
C) they are affected by the different climate conditions positively
D) people find more food resources to live on
E) new residence areas are found where there is almost no risk of being ill
Democracy had its beginnings in certain of the city- states of ancient Greece in which the whole citizen body formed the legislature; such a system was possible because a city-state's population rarely exceeded 10,000 people, and women and slaves had no political rights. Citizens were eligible for a variety of executive and judicial offices, some of which were filled by elections, while others were assigned by lot. There was no separation of powers, and all officials were fully responsible to the popular assembly, which was qualified to act in executive and judicial as well as legislative matters. Greek democracy was a brief historical episode that had little direct influence on the development of modern democratic practices. Two millennia separated the fall of the Greek city-state and the rise of modern constitutional democracy.